WO2020235695A1 - コーティング部材及びコーティング部材の製造方法 - Google Patents
コーティング部材及びコーティング部材の製造方法 Download PDFInfo
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- WO2020235695A1 WO2020235695A1 PCT/JP2020/020815 JP2020020815W WO2020235695A1 WO 2020235695 A1 WO2020235695 A1 WO 2020235695A1 JP 2020020815 W JP2020020815 W JP 2020020815W WO 2020235695 A1 WO2020235695 A1 WO 2020235695A1
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- interference layer
- optical interference
- layer
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- forming composition
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/111—Anti-reflection coatings using layers comprising organic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/12—Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
- B05D2502/005—Acrylic polymers modified
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2506/00—Halogenated polymers
- B05D2506/10—Fluorinated polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
Definitions
- the present disclosure relates to a coating member and a method for manufacturing the coating member.
- displays include digital meters, instrument panels, navigation systems, console panels, center clusters, and heater control panels. It is used in various fields as illustrated in the display panel. Such products are often provided with films and coatings having an antireflection function.
- Patent Document 1 describes, for example, a display front plate which is arranged on the observer side with respect to the display portion of a liquid crystal display and has a display area and a non-display area, and is a display area.
- a display front plate having an antireflection film formed on the surface and a design layer formed on a non-display area is disclosed.
- the display front plate described in Patent Document 1 has a step of matching the interface between the display region and the non-display region and the interface between the region where the antireflection film is present and the region where the antireflection film is not present. It is necessary, and moreover, the region where the antireflection coating is present and the region where the antireflection coating is not present are formed from different film materials. Therefore, the display front plate of Patent Document 1 may cause light leakage, diffused reflection of light, or the like at the boundary between the display area and the non-display area. Further, there is a possibility that sufficient designability cannot be exhibited.
- the present invention solves the above problems, and an object of the present invention is to provide a coating member capable of improving both antireflection and design.
- the coating member of the present disclosure is a coating member having a base layer and a light interference layer formed from a light interference layer forming composition.
- An optical interference layer is arranged on a part of the surface of the base layer on the visible side.
- the optical interference layer is in the range of more than 0 nm and 600 nm or less. It has a relationship of 0.08 ⁇ (refractive index of the base layer)-(refractive index of the optical interference layer) ⁇ 0.45.
- the optical interference layer forming composition is a composition for inkjet coating.
- the optical interference layer is an optical interference layer formed by an inkjet method.
- the coating member of the present disclosure is a coating member having a base layer and a light interference layer formed from a light interference layer forming composition.
- An optical interference layer is arranged on at least a part of the surface of the base layer on the visible side.
- the optical interference layer is larger than 0 nm and within 600 nm or less. It has a minimum thickness (t min ) and a maximum thickness (t max ), and further It has a relationship of minimum thickness (t min ) ⁇ maximum thickness (t max ), It has a relationship of 0.08 ⁇ (refractive index of the base layer)-(refractive index of the optical interference layer) ⁇ 0.45.
- the light interference layer forming composition is a composition for inkjet coating.
- the optical interference layer is an optical interference layer formed by an inkjet method. Coating member.
- the coating member of the present disclosure is Let the L value, a value and b value of the hue in the base layer be L (i), a (i) and b (i). Hue L value in the thickness t (nm) of the optical interference layer, the a and b values, and L t (ii), a t (ii) and b t (ii), Here, t is larger than 0 nm and 600 nm or less.
- L (i), a (i) and b (i) in the base layer In the optical coherent layer, with the thickness t (nm) L t (ii), but with a t (ii) and b t (ii), satisfies at least one of the following formulas (1) to (3) , Coating member; 0 ⁇ L (i) -Lt (ii) ⁇ 35 formula (1) -30 ⁇ a (i) -a t (ii) ⁇ 30 Equation (2) -40 ⁇ b (i) -b t (ii) ⁇ 40 Equation (3).
- the coating member of the present disclosure is Let the L value, a value and b value of the hue in the base layer be L (i), a (i) and b (i).
- t is larger than 0 nm and 600 nm or less.
- the relationship between the hue in the base layer and the hue difference ⁇ E at the thickness t (nm) in the optical interference layer is 1 ⁇ E ⁇ 50.
- the optical interference layer forming composition contains 300 parts by mass or more and 9900 parts by mass of an organic solvent with respect to 100 parts by mass of the resin solid content.
- the light interference layer forming composition contains a light interference layer forming resin component, and the light interference layer forming resin component has an unsaturated double bond and is active. It is an energy ray curable resin component.
- the optical interference layer forming composition contains a polyfunctional acrylate and a fluororesin.
- the optical interference layer forming composition contains a polyfunctional acrylate, a silicone-modified acrylate, and a fluororesin.
- the coating member of the present disclosure is a decorative member used in the interior of a vehicle.
- the present disclosure is a method for manufacturing a coating member. At least a part of the surface of the base layer on the visible side is coated with the light interference layer forming composition by an inkjet method, and is irradiated with active energy rays to form a light interference layer.
- a method for manufacturing a coating member including.
- the coating member of the present disclosure can have excellent antireflection property and design property.
- the coating member obtained through the steps of forming the region having the antireflection function and the step of forming the region having the design property is light in these boundary regions. In addition to reflection and light leakage, there was a risk that the design could be simplified.
- the coating member according to the present disclosure is A coating member having a base layer and a light interference layer formed from a light interference layer forming composition.
- An optical interference layer is arranged on a part of the surface of the base layer on the visible side.
- the optical interference layer is in the range of more than 0 nm and 600 nm or less. It has a relationship of 0.08 ⁇ (refractive index of the base layer)-(refractive index of the optical interference layer) ⁇ 0.45.
- the optical interference layer forming composition is a composition for inkjet coating.
- the optical interference layer is an optical interference layer formed by an inkjet method. It is a coating member.
- the coating member according to the present disclosure is A coating member having a base layer and a light interference layer formed from a light interference layer forming composition.
- An optical interference layer is arranged on at least a part of the surface of the base layer on the visible side.
- the optical interference layer is larger than 0 nm and within 600 nm or less. It has a minimum thickness (t min ) and a maximum thickness (t max ), and further It has a relationship of minimum thickness (t min ) ⁇ maximum thickness (t max ), It has a relationship of 0.08 ⁇ (refractive index of the base layer)-(refractive index of the optical interference layer) ⁇ 0.45.
- the optical interference layer forming composition is a composition for inkjet coating.
- the optical interference layer is an optical interference layer formed by an inkjet method.
- the optical interference layer has a specific thickness, and the optical interference layer and the base layer have a specific relationship with respect to the refractive index. Therefore, a coating member capable of improving both antireflection and designability is provided.
- the optical interference layer according to the present disclosure has such a specific refractive index relationship, it can have excellent antireflection properties.
- the optical interference layer is larger than 0 nm and within the range of 600 nm or less, and the optical interference layer has a uniform thickness.
- the optical interference layer has a minimum thickness (t min ) and a maximum thickness (t max ) within a range of greater than 0 nm and 600 nm or less, and further has a minimum thickness (t).
- the interference and reflection of light can be arbitrarily adjusted, and a desired appearance, that is, an appearance excellent in design can be derived.
- the optical interference layer can exhibit patterning and gradation.
- the interference of light can be adjusted and the reflectance can be adjusted, for example, a coating member having a metallic appearance can be provided.
- the optical interference layer can exhibit various colors depending on the viewing angle, the way the light hits, and the like.
- the coating member according to the present disclosure can change the thickness of the optical interference layer in the plane direction, that is, in the direction perpendicular to the thickness direction of the coating member.
- the optical interference layer may have a gradient, and the thickness may be stepwise. It may be varied or may have a convex shape.
- the refractive index of the optical interference layer is substantially the same as the refractive index on the viewing side and the refractive index at the position farthest from the viewing side in the thickness direction. May be good.
- the coating member of the present disclosure can form a light interference layer from one kind of light interference layer forming composition, it is not necessary to use a plurality of kinds of coating compositions. Therefore, it is possible to suppress unintended refraction, reflection, etc. of light that may occur by using different coating compositions, and in addition, it is possible to exhibit vivid color development.
- the coating member of the present disclosure can have an optical interference layer having an antireflection region and an excellent design region in at least a part of the surface of the base layer on the visible side.
- the region having antireflection property and the region having excellent designability may be continuously provided, and the region having antireflection property may be a region having excellent designability.
- the optical interference layer may have a uniform thickness in one embodiment, and in another embodiment, it may be a layer having a gradient in a thickness range of 600 nm or less from the surface of the base layer.
- the optical interference layer is a layer having a flat (uniform) thickness in a range where particularly excellent antireflection property is required, and a layer having a gradient in a region where designability is required. May be good.
- the optical interference layer of the present disclosure may be continuous with a region mainly exhibiting excellent antireflection property and a region mainly exhibiting excellent design property. Therefore, it is possible to suppress light leakage, diffused reflection, and the like at the boundary between the region showing antireflection and the region showing excellent design.
- the optical interference layer may have a stepped layer structure in a range of 600 nm or less in thickness from the surface of the base layer, or may have both a sloped portion and a stepped layer structure. ..
- the coating member of the present disclosure is a coating member capable of arbitrarily varying the reflectance and transmittance of the surface, and can be provided with both antireflection by light interference technology and designability such as metallic tone.
- the optical interference layer forming composition in the present disclosure is a composition for inkjet coating and is excellent in workability. Moreover, it is a coating member with high coating accuracy. Therefore, the desired coating can be applied to the designed area, and colors such as gradation can be reproduced more beautifully. Further, since the light interference layer forming composition is a composition for inkjet coating, it can be applied to an arbitrary place without masking a portion to be not applied, and thus is excellent in processability and productivity. Further, it is possible to form an optical interference layer with less unevenness even on a large-sized object to be coated and a seamless object to be coated. For example, even such an enlarged object to be coated can be coated on the same surface. Moreover, since the optical interference layer having an extremely thin film thickness can be formed by using the inkjet method, the thickness of the entire coating member can be reduced.
- the coating member of the present disclosure has physical properties such as high hardness and scratch resistance. As described above, the coating member of the present disclosure has extremely high designability, antireflection ability capable of improving the visibility of a display or the like, and further has excellent mechanical properties.
- the light interference layer can adjust the reflectance in the desired region of the coating member.
- the reflectance at a desired wavelength can be reduced and light of a desired wavelength can be transmitted. Therefore, the characteristics of the sensor that can be provided inside the display can be fully exhibited. Further, it is possible to improve the transmittance of light rays indicating a desired wavelength range and improve the design of the region where the transmittance of light rays is improved. Therefore, it is possible to obtain a coating member that allows light rays required by a sensor or the like to pass through and also exhibits excellent design (for example, metallic appearance). Further, the coating member of the present disclosure can have a high crosslink density, and can be applied to a panel or the like including various sensors.
- the infrared reflectance can be locally reduced, and for example, an infrared sensor can be mounted in the area.
- the infrared sensor can be mounted inconspicuously from the visual side, and the design selectivity for the coating member is widened. It can also contribute to the improvement of the sensor function.
- an optical interference layer is arranged on at least a part of the surface of the base layer on the visual side.
- the area of the coating member arranged in the display portion of a display or the like may have an antireflection layer in which a light interference layer is arranged on the surface of the base layer.
- the optical interference layer is in the range of more than 0 nm and 600 nm or less, and the optical interference layer has a uniform thickness.
- the optical interference layer has such a thickness, it is possible to obtain an optical interference layer having excellent antireflection property and designability.
- an optical interference layer having excellent surface smoothness, no unevenness, and extremely small unevenness can be obtained, and high glossiness can be obtained.
- the optical interference layer has a minimum thickness (t min ) and a maximum thickness (t max ) within a range of greater than 0 nm and 600 nm or less, and further has a minimum thickness (t min ).
- ⁇ It has a relationship of maximum thickness (t max ).
- the optical interference layer has such a thickness, it is possible to obtain an optical interference layer having excellent antireflection property and designability. In addition, an optical interference layer having excellent surface smoothness, no unevenness, and extremely small unevenness can be obtained, and high glossiness can be obtained.
- the optical interference layer has a uniform thickness in a range of more than 0 nm and 600 nm or less on the same surface of the base layer, or the thickness is coated separately. In addition, it is possible to apply (variably) different film thicknesses.
- the thickness of the optical interference layer has a thickness of 0.1 nm or more, 1 nm or more, 10 nm or more, 30 nm or more, and 50 nm or more.
- the optical interference layer may have a uniform thickness in the range of 0.1 nm or more and 600 nm or less, and in another form, the minimum thickness (t min ) and the maximum in such a range. It has a thickness (t max ), and a minimum thickness (t min ) and a maximum thickness (t max ) have a predetermined relationship.
- the maximum thickness (t max ) is 10 nm or more and 500 nm or less, 20 nm or more and 450 nm or less, 25 nm or more and 400 nm or less, 30 nm or more and 350 nm or less, 35 nm or more and 320 nm or less, 40 nm or more, unless it deviates from the scope of the present disclosure. It can have a maximum thickness within a range selected from the group consisting of 300 nm or less and 45 nm or more and 200 nm or less. When the maximum thickness (t max ) is within such a range and the conditions of the present disclosure are satisfied, an optical interference layer having excellent antireflection property and designability can be obtained.
- the maximum thickness (t max ) of the optical interference layer is obtained by calculating the average value in the region having the maximum thickness.
- the film thickness can be measured by precipitating a cross section using an instrument such as a microtome and observing the cross section using a laser microscope, FE-SEM, or the like.
- the refractive index of the base layer and the refractive index of the optical interference layer have the following relationship. 0.08 ⁇ (refractive index of base layer)-(refractive index of optical interference layer) ⁇ 0.45. For example 0.10 ⁇ (refractive index of base layer)-(refractive index of optical interference layer) ⁇ 0.43, 0.15 ⁇ (refractive index of base layer)-(refractive index of optical interference layer) ⁇ 0.42, 0.18 ⁇ (refractive index of the base layer)-(refractive index of the optical interference layer) ⁇ 0.41 and 0.20 ⁇ (refractive index of the base layer)-(refractive index of the optical interference layer) ⁇ 0.40, It may have a relationship selected from the group consisting of.
- the refractive index can be measured by an Abbe refractive index meter by a method according to JIS K0062.
- the refractive index of the optical interference layer in the present disclosure is, for example, 1.30 or more and 2.0 or less, and in one embodiment, 1.30 or more and 1.80 or less, for example, 1.30 or more and 1.76 or less. It may be 1.30 or more and 1.60 or less. In another embodiment, the refractive index of the interference layer may be 1.36 or more and 1.80 or less, for example, 1.36 or more and 1.76 or less, and 1.36 or more and 1.60 or less.
- the optical interference layer may be formed by using two or more kinds of optical interference layer forming compositions.
- the refractive indexes of the optical interference layer up to the minimum thickness (t min ) and the optical interference layer from the minimum thickness (t min ) to the maximum thickness (t max ) are It may be designed differently.
- the coating member can exhibit excellent antireflection property.
- the reflectance of light rays at a desired wavelength can be reduced, and the characteristics of a sensor that can be provided inside the display can be fully exhibited.
- the coating member Let the L value, a value and b value of the hue in the base layer be L (i), a (i) and b (i). Hue L value in the thickness t (nm) of the optical interference layer, the a and b values, and L t (ii), a t (ii) and b t (ii), Here, t is larger than 0 nm and 600 nm or less.
- the thickness (t) in nm L t (ii), but with a t (ii) and b t (ii), satisfies at least one of the following formulas (1) to (3) ; 0 ⁇ L (i) -Lt (ii) ⁇ 35 formula (1) -30 ⁇ a (i) -a t (ii) ⁇ 30 Equation (2) -40 ⁇ b (i) -b t (ii) ⁇ 40 Equation (3).
- the interference of light can be adjusted, and a desired appearance, that is, an appearance excellent in design can be derived.
- the optical interference layer can exhibit a gradation.
- a coating member having a metallic appearance can be provided.
- the optical interference layer can exhibit various colors depending on the viewing angle, the way the light hits, and the like. Further, unevenness of the optical interference layer and unevenness in the boundary region between the base layer and the optical interference layer can be suppressed, and a coating member having excellent designability can be obtained.
- the coating member of the present disclosure may satisfy all of the above formulas (1) to (3), or at least two of them.
- L (i) and Lt (ii) may have the following relationship: -30 ⁇ L (i) -Lt (ii) ⁇ 35 formula (1)
- -30 ⁇ L (i) -Lt (ii) ⁇ 35 formula (1) For example -20 ⁇ L (i) -Lt (ii) ⁇ 35 Equation (1) may be used.
- L (i) and Lt (ii) may have the following relationship. 0 ⁇ L (i) -Lt (ii)
- means an absolute value.
- ⁇ 35 Equation (1) Can have a relationship of. Even in the case of having such a relationship, the effect of the present disclosure can be obtained.
- equation (2) is -30 ⁇ a (i) -at (ii) ⁇ 30 formula (2) It may have a relationship (except 0). Further, the various (a (i) -at (ii)) relationships described in the present disclosure may also include forms other than 0. In another embodiment, a (i) and at (ii) may have the following relationship. 0 ⁇ a (i) -at (ii)
- equation (3) is -40 ⁇ b (i) -bt (ii) ⁇ 40 equation (3) It may have a relationship (except 0). Further, the various (b (i) -bt (ii)) relationships described in the present disclosure may also include forms other than 0. In another embodiment, b (i) -bt (ii) may have the following relationship. 0 ⁇ b (i) -bt (ii)
- means an absolute value. Even in the case of having such a relationship, the effect of the present disclosure can be obtained.
- the hue of the optical interference layer at a thickness of t (nm) means the hue of a coating member having a thickness of the optical interference layer of t (nm). That is, it means the hue measured for the optical interference layer having a thickness of t (nm) in the coating member having the base layer and the optical interference layer according to the present disclosure.
- L (i), a (i) and b (i) in the base layer can indicate, for example, the following ranges. 0 ⁇ L (i) ⁇ 40 -30 ⁇ a (i) ⁇ 30 -30 ⁇ b (i) ⁇ 30
- the thickness t of the optical interference layer is 76nm, L t (ii), a t (ii) and b t (ii), respectively, L 76 (ii), a 76 (ii) and b 76 It can be indicated as (ii).
- the thickness t is in the form of 431nm, L t (ii), a t (ii) and b t (ii), respectively, the hue L 431 (ii), a 431 (ii) and b 431 (ii ) Can be shown.
- the L value, a value, and b value of the hue are obtained in accordance with JIS Z8781-4 and JIS Z8781-5, and the object to be measured according to the L * a * b * color system (CIE 1976). It is an index used to express color. In this color system, the L value represents lightness. Then, the chromaticity indicating the hue and the saturation is represented by the a value and the b value.
- the a value and b value are called Cromartie index and represent the direction of color. The a value is based on 0, and when the value is negative, it means that the hue of the substance to be measured is green, and when the value is positive, it means that the redness is increased.
- the b value is based on 0, and when the value is negative, it means that the hue of the substance to be measured is blue, and when it is positive, it means that the yellowness is increased. When both the a value and the b value are 0, the color is achromatic with no tint.
- the L value, a value, and b value of the hue can be measured under the following conditions using SD3000 manufactured by Nippon Denshoku Kogyo.
- Light source D65 Measurement method: Reflected field of view: 10 degrees Specular reflected light processing: SCI.
- the coating member of the present disclosure satisfies at least one of the following formulas (1) to (3).
- the thickness t of the optical interference layer can be any value larger than 0 nm and 600 nm or less.
- the optical interference layer forming composition in the present disclosure is a composition for inkjet coating, and is compared with a screen printing method, a gravure printing method, a spin coating method, etc.
- the thickness of the optical interference layer can be controlled more delicately, and for example, the inclination of the thickness of the optical interference layer can be formed more smoothly than the screen printing method, the gravure printing method, the spin coating method, or the like.
- the coating member of the present disclosure has high coating accuracy because the optical interference layer forming composition in the present disclosure is a composition for inkjet coating.
- the desired coating can be applied to the designed area, and colors such as gradation can be reproduced more beautifully. Further, it is possible to form an optical interference layer with less unevenness even on a large-sized object to be coated and a seamless object to be coated.
- the coating member of the present disclosure can have extremely high designability.
- an infrared sensor can be provided because the transmittance of infrared rays and the like in a desired region of the optical interference layer can be controlled, for example, the infrared transmittance can be increased while having high designability. Therefore, in a desired region of the optical interference layer, it is possible to exhibit high infrared transmittance while having high designability.
- the thickness t of the optical interference layer is 76 nm
- the thickness t of the optical interference layer is 120 nm
- the thickness t of the optical interference layer is 129 nm
- the thickness t of the optical interference layer is 174 nm
- the thickness t of the optical interference layer is 217 nm
- the thickness t of the optical interference layer is 260 nm
- the thickness t of the optical interference layer is 307 nm
- the thickness t of the optical interference layer is 379 nm
- the thickness t of the optical interference layer is 431 nm
- the optical interference layer has a thickness of 76 nm and a thickness of 431 nm, at least one of the formulas (1) to (3) is satisfied within the range corresponding to each thickness. Can be done.
- the coating member of the present disclosure is Let the L value, a value and b value of the hue in the base layer be L (i), a (i) and b (i).
- t is greater than 0 nm and greater than or equal to 600 nm.
- the difference ⁇ E between the hue in the base layer and the hue in the optical interference layer at a thickness t (nm) is 1 ⁇ E ⁇ 50. The relationship is shown.
- the color difference ⁇ E can be derived in accordance with JIS Z8730: 2009.
- the hues L (i), a (i) and b (i) in the base layer are measured with respect to the base layer using a spectrophotometer (manufactured by Nippon Denshoku Kogyo Co., Ltd., product number SD3000) and a D65 light source, and similarly. It can be calculated from the values of the hue L t in any thickness t of the optical interference layer (nm) (ii), a t (ii) and b t (ii).
- the calculation formula of the color difference ⁇ E is expressed by the following formula.
- ⁇ E [( ⁇ L) 2 + ( ⁇ a) 2 + ( ⁇ b) 2 ] 1/2
- the L value, a value, and b value of the hue in the base layer are L (i), a (i), and b (i).
- the color difference ⁇ E is 2 or more and 50 or less, for example, 5 or more and 45 or less.
- the interference of light can be adjusted more effectively, and an appearance excellent in design can be derived.
- the optical interference layer can exhibit patterning and gradation.
- a coating member having a metallic appearance can be provided.
- the optical interference layer can exhibit various colors depending on the viewing angle, the way the light hits, and the like. Further, unevenness of the optical interference layer and unevenness in the boundary region between the base layer and the optical interference layer can be suppressed, and a coating member having excellent designability can be obtained.
- the coating member of the present disclosure may satisfy all of the above formulas (1) to (3), or at least two of them.
- the reflectance of the base layer is 0.1 to 20% in the region of 380 nm to 780 nm, for example 3% to 11%, and in another embodiment 8% to 11%.
- the reflectance of the coating member of the present disclosure ie, a member having a base layer and a light interference layer measured at a position where the thickness of the light interference layer is 76 nm is 0 in the region of 380 nm to 780 nm. .1 to 10%, for example 1% to 5%.
- the reflectance and transmittance of the surface of the coating member can be arbitrarily changed, and for example, both antireflection by light interference technology and designability such as metallic tone can be provided. ..
- the reflectance of the coating member of the present disclosure ie, a member having a base layer and a light interference layer measured at a position where the thickness of the light interference layer is 260 nm is 0 in the region of 380 nm to 780 nm. % To 11%.
- the reflectance and transmittance of the surface of the coating member can be arbitrarily changed, and for example, both antireflection by light interference technology and designability such as metallic tone can be provided. ..
- the optical interference layer has an arbitrary film thickness within the range included in the present disclosure.
- the thickness of the optical interference layer at an arbitrary position may be 76 nm, and the thickness at another arbitrary position may be 260 nm.
- the coating member of the present disclosure can exhibit the above-mentioned optical properties such as reflectance at each film thickness, and various physical properties such as optics can be obtained depending on the position where various physical properties of the optical interference layer are measured. Can show characteristics. Therefore, the interference of light can be adjusted more effectively, and an appearance excellent in design can be derived.
- the optical interference layer of the present disclosure is a layer formed from the optical interference layer forming composition.
- the light interference layer forming composition contains a light interference layer forming resin component
- the light interference layer forming composition is a composition for inkjet coating. Since the optical interference layer forming composition is a composition for inkjet coating, film thickness control and coating (patterning) can be performed with extremely high accuracy. In addition, the occurrence of unevenness can be reduced or suppressed.
- the optical interference layer forming composition contains an organic solvent of 300 parts by mass or more and 9900 parts by mass or less with respect to 100 parts by mass of the resin solid content. In another embodiment, the optical interference layer forming composition contains 100 parts by mass or more and 8000 parts by mass or less, for example, 100 parts by mass or more and 4000 parts by mass or less of an organic solvent with respect to 100 parts by mass of the resin solid content.
- 100 parts by mass of the resin solid content means that the total solid content of the resin component in the optical interference layer forming resin component is 100 parts by mass. Means.
- the light interference layer forming composition can be suitably coated by the inkjet method, and can be coated in the optimum amount of the composition according to the designed design.
- the optical interference layer of the present disclosure is a layer formed by applying the specific optical interference layer forming composition according to the present disclosure by using an inkjet coating, the film thickness of the optical interference layer can be made finer and various. Can be designed in a wide range. For example, the optical interference layer can exhibit more complicated patterning and gradation. Further, since the interference of light can be finely adjusted and the reflectance can be finely adjusted, for example, a coating member having a metallic appearance can be provided.
- the optical interference layer can exhibit various colors depending on the viewing angle, the way the light hits, and the like. Further, unevenness of the optical interference layer and unevenness in the boundary region between the base layer and the optical interference layer can be suppressed, and a coating member having excellent designability can be obtained.
- the optical interference layer forming resin component is an active energy ray-curable resin component having an unsaturated double bond.
- the optical interference layer forming composition may contain a polyfunctional acrylate and a fluororesin, and may also contain a polyfunctional acrylate, a silicone-modified acrylate and a fluororesin.
- the active energy ray-curable resin component is a monomer, oligomer, or polymer (also referred to as resin) that can be crosslinked and cured by active energy rays (for example, ultraviolet rays).
- an active energy ray-curable resin component it has a monomer, an oligomer or a polymer having at least one unsaturated double-bonding group, and more specifically, having at least one unsaturated double-bonding group.
- Monomers, polymers, etc. These monomers, oligomers, polymers and the like may be used in combination.
- the photointerfering layer forming composition comprises an unsaturated double bond containing acrylic resin (also referred to as an unsaturated double bond containing acrylic polymer).
- the light interference layer forming composition may comprise a non-reactive acrylic resin.
- the optical interference layer forming composition may contain an unsaturated double bond-containing acrylic resin and / or a non-reactive acrylic resin.
- the optical interference layer forming composition may contain, for example, a plurality of unsaturated double bond-containing acrylic resins and / or non-reactive acrylic resins.
- the optical interference layer forming composition contains an unsaturated double bond-containing acrylic resin and / or a non-reactive acrylic resin having a weight average molecular weight (Mw) of 5000 to 100,000.
- the unsaturated double bond-containing acrylic resin and / or the non-reactive acrylic resin may have a weight average molecular weight (Mw) of 5000 or more and 100,000 or less, for example, a weight average molecular weight (Mw) of 6000 or more. It may be 95,000 or less.
- the weight average molecular weight (Mw) can be calculated by a known method.
- one polymer when the active energy ray-curable resin component contains a plurality of types of polymers, one polymer may have a weight average molecular weight (Mw) of 5000 or more and 100,000 or less, and another type of polymer may be used. , The weight average molecular weight (Mw) may be 10,000 or more and 80,000 or less. Further, polymers having different weight average molecular weights (Mw) may be included. By using polymers having various weight average molecular weight ranges in combination, the optical interference layer can exhibit high smoothness and workability.
- the obtained molded product can have higher hardness, abrasion resistance, chemical resistance and the like.
- the photointerfering layer forming composition comprises an unsaturated double bond containing acrylic resin and / or a non-reactive acrylic resin and a polyfunctional urethane (meth) acrylate.
- the photointerference layer forming composition comprises an unsaturated double bond-containing acrylic resin having a weight average molecular weight (Mw) of 5000 to 100,000 and / or a non-reactive acrylic resin, and a polyfunctional urethane (meth) having an acrylate equivalent of 100 to 200. ) Including with acrylate.
- the non-reactive acrylic resin is an acrylic resin that does not react even when irradiated with active energy rays or shows almost no reactivity, and does not react even when irradiated with ultraviolet rays, for example. Or, it is an acrylic resin that shows almost no reactivity.
- the acrylate equivalent of the polyfunctional urethane (meth) acrylate is, for example, 100 or more and 200 or less, for example, the acrylate equivalent is 110 or more and 180 or less, and in another form, the acrylate equivalent is 115 or more and 160 or less.
- the photointerfering layer forming composition comprises an unsaturated double bond containing acrylic resin and / or a non-reactive acrylic resin, a polyfunctional silicone (meth) acrylate, a fluororesin, and inorganic oxide fine particles. ..
- the photointerference layer forming composition comprises an unsaturated double bond-containing acrylic resin and / or a non-reactive acrylic resin, and a polyfunctional silicone (meth) acrylate having a weight average molecular weight (Mw) of 700 to 100,000.
- Mw weight average molecular weight
- the inclusion of polyfunctional silicone (meth) acrylates allows for low surface tension, excellent leveling and reduced tack.
- the inorganic oxide fine particles excellent wear resistance can be imparted and tack can be reduced.
- the weight average molecular weight (Mw) of the polyfunctional silicone (meth) acrylate is, for example, 700 or more and 100,000 or less, 800 or more and 90,000 or less in one form, and 800 or more and 85,000 or less in another form.
- the fluorine content of the fluororesin is 0.1% by weight or more and 80% by weight or less, for example, 5 or more and 75% by weight or less.
- the photointerference layer forming composition contains an unsaturated double bond-containing acrylic resin and / or a non-reactive acrylic resin in an amount of more than 0.1 part by mass and 80% by mass with respect to 100 parts by mass of the solid content contained in the composition. It is contained in an amount of 3.0 parts by mass or more and 60 parts by mass or less, and in a certain form, 5.0 parts by mass or more and 60 parts by mass or less.
- the photointerfering layer forming composition contains a plurality of unsaturated double bond-containing acrylic resins and / or non-reactive acrylic resins, a plurality of unsaturated double bond-containing acrylic resins and / or non-reactive acrylic resins are used.
- the total amount of acrylic resin is preferably within the above range.
- the light interference layer forming composition contains 3.0 parts by mass or more and 100 parts by mass or less of the polyfunctional urethane (meth) acrylate with respect to 100 parts by mass of the resin solid content contained in the composition, for example, 5.0. It is contained in an amount of 13 parts by mass or more and 68 parts by mass or less in another form.
- the photointerference layer forming composition contains 0.1 parts by mass or more and 100 parts by mass or less of the polyfunctional silicone (meth) acrylate with respect to 100 parts by mass of the solid content contained in the composition, for example, 0.1. It is contained in an amount of 0.3 parts by mass or more and 95 parts by mass or less, and in another form, 0.3 parts by mass or more and 50 parts by mass or less.
- the optical interference layer forming composition contains 0.01 part by mass or more and 100 parts by mass or less of the fluororesin, for example, 0.1 part by mass or more and 95 parts by mass with respect to 100 parts by mass of the solid content contained in the composition.
- the content is 0.5 parts by mass or more and 50 parts by mass or less.
- the photointerfering layer forming composition according to the present disclosure is a polyfunctional (meth) acrylate monomer or polyfunctional (meth) acrylate monomer from the viewpoint that the cross-linking density after curing can be increased and the effect of improving the surface hardness can be enhanced.
- Polyfunctional (meth) acrylate compounds such as meta) acrylate oligomers or polyfunctional (meth) acrylate polymers; such as polyfunctional urethane (meth) acrylate monomers, polyfunctional urethane (meth) acrylate oligomers, polyfunctional urethane (meth) acrylate polymers, etc.
- Polyfunctional urethane (meth) acrylate compounds polyfunctional silicone (meth) acrylate compounds such as polyfunctional silicone (meth) acrylate monomers, polyfunctional silicone (meth) acrylate oligomers, and polyfunctional silicone (meth) acrylate polymers; It is preferable to contain at least one selected from a functional (meth) acrylate compound, a polyfunctional urethane (meth) acrylate compound and a polyfunctional silicone (meth) acrylate compound.
- a commercially available product may be used as the (meth) acrylate monomer or oligomer having one unsaturated double bond group.
- Commercially available products include, for example, methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, acrylic acid, and methacrylic acid.
- polyfunctional (meth) acrylate monomer or oligomer Commercially available products may be used as the polyfunctional (meth) acrylate monomer or oligomer.
- Commercially available products include, for example, DPHA (Dycel Ornex), PETRA (Dycel Ornex: pentaerythritol triacrylate), PETIA (Dycel Ornex), Aronix M-403 (Toagosei: dipentaerythritol penta and).
- Examples of the monofunctional or polyfunctional (meth) acrylate polymer include high molecular weight compounds of the monofunctional or polyfunctional (meth) acrylate monomer or oligomer.
- the said various polymers may be simply referred to as an unsaturated double bond-containing acrylic polymer or an unsaturated double bond-containing acrylic resin.
- polyfunctional urethane (meth) acrylate monomer or oligomer Commercially available products may be used as the polyfunctional urethane (meth) acrylate monomer or oligomer.
- bifunctional urethane (meth) acrylate (“UX-2201”, “UX-8101”, “UX-6101” manufactured by Nippon Kayaku Co., Ltd., "UF-8001” manufactured by Kyoeisha Chemical Co., Ltd., " UF-8003, Daicel Ornex's "Ebecryl 244", “Ebecryl 284", "Ebecryl 2002”, “Ebecryl 4835”, “Ebecryl 4883”, “Ebecryl 4883”, “Ebecryl 8807”, “Ebecryl 8807”, “Ebecryl acrylate” "Ebecryl 254", “Ebecryl 264", “Ebecryl 265"), 4-functional urethane (meth) acrylate ("Ebecryl 8210” manufactured by Daicel Or
- the monofunctional or polyfunctional urethane (meth) acrylate monomer or oligomer also reacts, for example, a polycarbonate diol with a (meth) acrylate compound containing a hydroxyl group and an unsaturated double bond group in the molecule with a polyisocyanate. It can also be prepared by.
- Examples of the monofunctional or polyfunctional urethane (meth) acrylate polymer include high molecular weight compounds of the monofunctional or polyfunctional urethane (meth) acrylate monomer or oligomer.
- a polyfunctional silicone (meth) acrylate monomer or oligomer is a compound having a silicone skeleton.
- the compound having a silicone skeleton may have a fluorine atom-containing group, and the fluororesin may have a silicone skeleton.
- Commercially available products may be used as the polyfunctional silicone (meth) acrylate monomer or oligomer. Examples of commercially available products include the following.
- (Meta) A material having an acryloyl group-containing fluorine atom-containing group and a material having a fluororesin compound having a silicone skeleton ⁇ br /> Made by Nippon Synthetic Chemical Industry Co., Ltd .: Shikou UV-AF305 T & K TOKA: ZX-212, ZX-214-A Manufactured by Shin-Etsu Chemical Co., Ltd .: KY-1203 and the like.
- the optical interference layer forming composition may contain, for example, a fluorine-based resin in addition to the above-mentioned resin.
- a fluorine-based resin means a fluorine-containing resin containing no compound having a silicone skeleton.
- perfluorooctyl acrylate, acrylic-modified perfluoropolyether and the like can be mentioned.
- the fluorine-containing resin the functional groups of the methacryloyl group and the acryloyl group may be modified.
- the fluororesin may be, for example, the following commercially available products.
- the optical interference layer forming composition may contain organic fine particles and / or inorganic oxide fine particles.
- the inorganic oxide fine particles include silica (SiO 2 ) particles, hollow silica particles, macnesium fluoride particles, alumina particles, titania particles, tin oxide particles, antimony-doped tin oxide (abbreviation: ATO) particles, zinc oxide particles and the like. Be done.
- the functional group may be modified.
- the functional group is preferably a (meth) acryloyl group.
- the organic fine particles include acrylic fine particles, hollow acrylic fine particles, polystyrene fine particles, and melamine fine particles.
- the primary particle size of the organic fine particles and the inorganic oxide fine particles is 5 nm to 100 nm from the viewpoint of transparency and coating stability.
- the average particle size of the granules in the present specification is a value measured from an image of a cross-sectional electron microscope using image processing software.
- volume shrinkage can be alleviated with respect to the uncured coating film.
- rigidity can be imparted to the coating film in addition to the above effects.
- by blending the inorganic oxide fine particles it is possible to suppress the generation of curls due to curing shrinkage of the cured coating film.
- wear resistance can be improved. Can be granted.
- the photointerfering layer forming composition of the present invention preferably contains a photopolymerization initiator. Due to the presence of the photopolymerization initiator, the resin component is satisfactorily polymerized by active energy rays, for example, ultraviolet rays.
- the photopolymerization initiator include an alkylphenone-based photopolymerization initiator, an acylphosphine oxide-based photopolymerization initiator, a titanosen-based photopolymerization initiator, and an oxime ester-based polymerization initiator.
- alkylphenone-based photopolymerization initiators examples include 2,2-dimethoxy-1,2-diphenylethane-1-one, 1-hydroxy-cyclohexyl-phenyl-ketone, and 2-hydroxy-2-methyl-1-phenyl-propane.
- acylphosphine oxide-based photopolymerization initiator examples include 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide and bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide.
- titanosen-based photopolymerization initiator examples include bis ( ⁇ 5-2,4-cyclopentadiene-1-yl) -bis (2,6-difluoro-3- (1H-pyrrole-1-yl) -phenyl) titanium and the like. Can be mentioned.
- Examples of the oxime ester-based polymerization initiator include 1.2-octanedione, 1- [4- (phenylthio)-, 2- (O-benzoyloxime)], ethanone, 1- [9-ethyl-6- (2). -Methylbenzoyl) -9H-carbazole-3-yl]-, 1- (0-acetyloxime), oxyphenylacetic acid, 2- [2-oxo-2-phenylacetoxyethoxy] ethyl ester, 2- (2-hydroxy) Ethoxy) Ethyl ester and the like can be mentioned.
- One of these photopolymerization initiators may be used alone, or two or more thereof may be used in combination.
- photopolymerization initiators 2-hydroxy-2-methyl-1-phenyl-propan-1-one, 1-hydroxy-cyclohexyl-phenyl-ketone, 2-methyl-1- (4-methylthiophenyl) -2 -Morphorinopropane-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1, 2,2-dimethoxy-1,2-diphenylethane-1-one, etc. More preferably used.
- the preferable amount of the photopolymerization initiator is 0.01 to 10 parts by mass, for example, 1 to 10 parts by mass with respect to 100 parts by mass of the resin solid content of the photointerference layer forming composition.
- the photopolymerization initiator may be used alone or in combination of two or more kinds of photopolymerization initiators.
- the optical interference layer forming composition may contain a solvent.
- the solvent is not particularly limited, and can be selected in a timely manner in consideration of the components contained in the composition, the type of the base material to be applied, the method of applying the composition, and the like.
- Specific examples of the solvent that can be used include aromatic solvents such as toluene and xylene; ketone solvents such as methyl ethyl ketone, acetone, methyl isobutyl ketone and cyclohexanone; diethyl ether, isopropyl ether, tetrahydrofuran, dioxane and ethylene glycol.
- Ether-based solvents such as dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, propylene glycol monomethyl ether (PGM), anisole and phenetol; ester-based solvents such as ethyl acetate, butyl acetate, isopropyl acetate and ethylene glycol diacetate; Amido solvents such as dimethylformamide, diethylformamide, N-methylpyrrolidone; cellosolvent solvents such as methylcellosolve, ethylserosolve, butylcellosolve; alcoholic solvents such as methanol, ethanol, propanol, isopropyl alcohol, butanol, isobutyl alcohol; dichloromethane, Halogen-based solvents such as chloroform; and the like. These solvents may be used alone or in combination of two or more. Of these solvents, ester solvents,
- the optical interference layer forming composition has a viscosity of 0.5 to 50 cP, for example, 1 to 40 cP.
- the optical interference layer forming composition has a surface tension of 10 to 40 mN / m, for example, a surface tension of 15 to 35 mN / m. In another embodiment, the surface tension is 20-30 mN / m.
- additives can be added to the optical interference layer forming composition, if necessary, as long as the effects of the coating member of the present disclosure are not impaired.
- additives include commonly used additives such as antistatic agents, plasticizers, surfactants, antioxidants, ultraviolet absorbers, surface conditioners, and leveling agents.
- the optical interference layer forming composition can be prepared by a method usually used by those skilled in the art. For example, it can be prepared by mixing each of the above components using a commonly used mixing device such as a paint shaker or a mixer.
- the base layer according to the present disclosure can be appropriately selected as long as the specific conditions in the present disclosure are satisfied.
- the base layer may be a single layer or a plurality of layers.
- the base layer has a structure having a high refractive index layer, a medium refractive index layer, and a base layer (for example, a hard coat layer) in order from the side adjacent to the optical interference layer according to the present disclosure, that is, the visual recognition side.
- the base material may be provided on the surface of the base layer opposite to the medium refractive index layer.
- the base layer has at least a base layer and a base material in order from the side adjacent to the optical interference layer according to the present disclosure, that is, the visual side.
- the high refractive index layer has a thickness of 10 nm or more and 300 nm or less, for example, 10 nm or more and 200 nm or less.
- the refractive index of the high refractive index layer can be appropriately selected according to the refractive index of the optical interference layer according to the present disclosure, and is, for example, in the range of 1.45 or more and 2.00 or less.
- the medium refractive index layer has a thickness of 10 nm or more and 300 nm or less, for example, 10 nm or more and 200 nm or less.
- the refractive index of the medium refractive index layer can be appropriately selected according to the refractive index of the optical interference layer according to the present disclosure, and can be set within the range of 1.45 or more and 1.70 or less.
- the medium refractive index layer is lower than the refractive index indicated by the high refractive index layer and can take a value higher than the refractive index of the optical interference layer according to the present disclosure.
- the thickness of the base layer is in the range of 0.1 to 100 ⁇ m, for example, in the range of 1 to 30 ⁇ m, and in another embodiment, in the range of 1.5 to 15 ⁇ m. If the thickness of the base layer is within this range, the adhesion to the base material and the surface hardness of the base layer are high.
- the refractive index of the base layer can be set within the range of 1.45 or more and 1.70 or less. In one embodiment, the refractive index of the base layer is smaller than the refractive index of the high refractive index layer and / or the refractive index of the medium refractive index layer.
- Examples of the resin forming the high refractive index layer, the medium refractive index layer, and the base layer that the base layer can have include epoxy resins, phenolic resins, melamine resins, alkyd resins, isocyanate resins, and acrylic resins. Examples thereof include polyester-based resins, urethane-based resins, and siloxane resins. Examples of these resins include thermosetting type, ultraviolet curable type, and electron beam curable type resins. These resins can be used alone or in combination of two or more. Further, inorganic fine particles having a high refractive index may be blended with these resins.
- the composition forming the high refractive index layer and the medium refractive index layer may contain inorganic oxide fine particles.
- the inorganic oxide fine particles may be inorganic oxide fine particles whose surface is modified with an unsaturated double bond.
- examples of the inorganic oxide fine particles include silica (SiO 2 ) particles, alumina particles, titania particles, zirconia oxide particles, tin oxide particles, antimony-doped tin oxide (abbreviation: ATO) particles, zinc oxide particles and the like.
- ATO antimony-doped tin oxide
- the functional group is preferably a (meth) acryloyl group.
- the primary particle size of the inorganic oxide fine particles for example, the inorganic oxide fine particles is 5 nm to 100 nm from the viewpoint of transparency and paint stability.
- the average particle size of the granules in the present specification is a value measured from an image of a cross-sectional electron microscope using image processing software.
- volume shrinkage can be alleviated with respect to the uncured coating film.
- rigidity can be imparted to the coating film in addition to the above effects.
- by blending the inorganic oxide fine particles it is possible to suppress the generation of curls due to curing shrinkage of the cured coating film.
- wear resistance can be improved. Can be granted.
- inorganic oxide fine particles may be used, and as alumina particles, Sumitomo Osaka Cement Co., Ltd .: AS-150I, AS-150T Manufactured by Big Chemie Japan: NANOBYK-3601, NANOBYK-3602, NANOBYK-3610 and the like.
- zirconia oxide particles manufactured by Sakai Chemical Industry Co., Ltd .: SZR-K, SZR-KM Made by CIK Nanotech: ZRANB15WT% -P02, ZRMIBK15WT% -P01, ZRMIBK15WT% -F85 Made by Solar: NANON5ZR-010, NANON5ZR-020 and the like.
- Examples of the base material that can be contained in the base layer of the present disclosure include polyester films such as polycarbonate films, polyethylene terephthalates, and polyethylene naphthalates; cellulose films such as diacetyl cellulose and triacetyl cellulose; acrylic films such as polymethyl methacrylate.
- polyester films such as polycarbonate films, polyethylene terephthalates, and polyethylene naphthalates
- cellulose films such as diacetyl cellulose and triacetyl cellulose
- acrylic films such as polymethyl methacrylate.
- resin base material is mentioned.
- These resin base materials may be transparent resin base materials.
- the resin base material according to the present disclosure is a styrene-based film such as polystyrene or acrylonitrile-styrene copolymer; olefins such as polyvinyl chloride, polyethylene, polypropylene, polyolefin having a cyclic or norbornene structure, or ethylene-propylene copolymer.
- Based film examples thereof include a resin base material such as an amide based film such as nylon and aromatic polyamide. These resin base materials may be transparent resin base materials.
- the resin base material according to the present disclosure includes polyimide, polysulfone, polyethersulfone, polyetheretherketone, polyphenylene sulfide, polyvinyl alcohol, polyvinylidene chloride, polyvinylbutyral, polyallylate, polyoxymethylene, epoxy resin, and the above polymer.
- a resin base material such as a blend of the above.
- These resin base materials may be transparent resin base materials.
- the resin base material according to the present disclosure may be one in which a plurality of resin base materials are laminated.
- it may be a laminated member of a film made of an acrylic resin and a film made of a polycarbonate resin, or a laminated member of a sheet. These laminated members may be transparent laminated members.
- the resin substrate according to the present disclosure is one of these resin substrates having less birefringence optically, or having a phase difference of 1/4 ( ⁇ / 4) of a wavelength (for example, 550 nm) or 1/2 ( ⁇ / 4) of a wavelength.
- Those controlled to ⁇ / 2) and those in which birefringence is not controlled at all can be appropriately selected according to the intended use.
- the thickness of the film base material may be, for example, 0.01 mm or more and 5 mm or less.
- the present disclosure comprises coating at least a part of the visible side surface of the base layer with the optical interference layer forming composition according to the present disclosure by an inkjet method.
- a method for manufacturing a coating member which comprises irradiating with active energy rays to form a light interference layer. Using this method, the coating member according to the present disclosure can be manufactured.
- the optical interference layer forming composition can be coated on the base layer by using an inkjet method.
- an inkjet method There are no restrictions on the method of the inkjet method, and there are no restrictions on known methods, such as a charge control method that uses electrostatic attraction, a drop-on-demand method that uses the vibration pressure of a piezo element (pressure pulse method), and an electrical signal that is converted into an acoustic beam.
- the optical interference layer forming composition is irradiated, and the optical interference layer forming composition is discharged by using the radiation pressure, and the optical interference layer forming composition is heated to form bubbles, and the generated pressure is generated.
- a thermal inkjet method or the like utilizing the above can be used.
- a light interference layer is formed by curing the light interference layer forming composition coated on the base layer. This curing can be performed by irradiating with a light source that emits active energy rays having a wavelength as required.
- a light source that emits active energy rays having a wavelength as required.
- ultraviolet rays can be mentioned, and for example, light having an integrated light intensity of 1 to 5000 mJ / cm 2 can be irradiated.
- the integrated light quantity 100 mJ / cm 2 ultra 1000 mJ / cm 2 or less of light characteristics of the light interference layer can be sufficiently exhibited and, moreover, can be more efficiently form an optical interference layer.
- the wavelength of the irradiation light is not particularly limited, but for example, ultraviolet light having a wavelength of 380 nm or less can be used. Such light can be obtained by using a high-pressure mercury lamp, an ultra-high pressure mercury lamp, or the like.
- the coating member of the present disclosure may further have a decorative layer, if necessary, and may have, for example, a decorative layer on the side opposite to the optical interference layer of the base layer.
- the decorative layer is a layer for decorating the decorative laminated member according to the present disclosure with a pattern, characters, metallic luster, or the like.
- Examples of such a decorative layer include a printing layer and a thin-film deposition layer. Both the printing layer and the thin-film deposition layer are layers whose main purpose is to decorate.
- the print layer or the vapor-deposited layer may be provided as the decorative layer, or both the print layer and the vapor-deposited layer may be provided.
- the print layer may be a layer composed of a plurality of layers.
- the decorative layer is a print layer.
- the print layer is for decorating the surface of the molded product with patterns and / or characters.
- the printing layer include a pattern consisting of wood grain, stone grain, cloth grain, sand grain, geometric pattern, characters, and solid surface.
- Materials for the printing layer include polyvinyl-based resins such as vinyl chloride / vinyl acetate copolymers, polyamide-based resins, polyester-based resins, polyacrylic resins, polyurethane-based resins, polyvinyl acetal-based resins, polyester urethane-based resins, and cellulose.
- a colored ink containing a resin such as an ester resin, an alkyd resin, or a chlorinated polyolefin resin as a binder and a pigment or dye of an appropriate color as a colorant.
- a resin such as an ester resin, an alkyd resin, or a chlorinated polyolefin resin
- a pigment or dye of an appropriate color as a colorant for example, the following can be used.
- azo pigments such as polyazo as yellow pigments, organic pigments such as isoindolinone or inorganic pigments such as titanium nickel antimony oxide, azo pigments such as polyazo as red pigments, and organic pigments such as quinacridone.
- an inorganic pigment such as a valve handle, an organic pigment such as phthalocyanine blue or an inorganic pigment such as cobalt blue as a blue pigment, an organic pigment such as aniline black as a black pigment, and an inorganic pigment such as titanium dioxide as a white pigment can be used. ..
- the dye of the ink used for the printing layer various known dyes can be used as long as the effect of the present invention is not impaired. Further, as the ink printing method, it is preferable to use a known printing method such as an offset printing method, a gravure printing method, or a screen printing method, or a known coating method such as a roll coating method or a spray coating method.
- a known printing method such as an offset printing method, a gravure printing method, or a screen printing method
- a known coating method such as a roll coating method or a spray coating method.
- the vapor deposition layer uses at least one metal selected from the group of aluminum, nickel, gold, platinum, chromium, iron, copper, indium, tin, silver, titanium, lead, zinc, etc., or an alloy or compound thereof. , Vacuum vapor deposition method or sputtering method, ion plating method, plating method and the like.
- the thickness of the printing layer or the vapor-deposited layer for decoration can be appropriately selected by a commonly used method according to the degree of stretching at the time of molding so that the desired surface appearance of the molded product can be obtained.
- the coating member of the present disclosure can be suitably used as a member arranged on a touch panel or a display unit and a sensor member arranged around the member.
- examples of the display include a liquid crystal display, an organic EL display, a plasma display, and the like.
- a surface opposite to the optical interference layer of the base layer is laminated on the display surface of the touch panel or the display unit.
- the coating member of the present invention can be applied to, for example, automobile components, personal digital assistants, household electric appliances, furniture, interior furnishings, etc., and can be applied, for example, as a decorative member used in the interior of a vehicle.
- Irgacure 127 (IGM) as a photopolymerization initiator is 0.18 parts by weight
- Aronix M-402 (Toa Synthetic) is 2.65 parts by weight as an ultraviolet curable resin for adjusting the refractive index.
- the medium refractive index layer forming composition was prepared by using 6.58 parts by weight of ZR-010 (solar) as the metal oxide fine particles of the above and 90 parts by weight of diacetone alcohol (DAA) as the solvent.
- DAA diacetone alcohol
- Irgacure 127 (IGM) as a photopolymerization initiator is 0.17 parts by weight
- Aronix M-402 (Toa Synthetic) is 0.72 parts by weight as an ultraviolet curable resin for adjusting the refractive index.
- a high refractive index layer forming composition was prepared by using 12.43 parts by weight of ZR-010 (solar) as the metal oxide fine particles of the above and 90 parts by weight of diacetone alcohol (DAA) as the solvent.
- DAA diacetone alcohol
- the medium refractive index layer forming composition was applied onto the base layer with a bar coater so that the dry film thickness was 80 nm, and dried at 65 ° C. for 4 minutes to volatilize the solvent, and the medium refractive index layer forming composition side. Then, it was cured by an ultraviolet irradiation treatment having an integrated light amount of 250 mJ / cm 2 to form a medium refractive index layer (refractive index 1.59). Further, a high refractive index layer forming composition is applied onto the medium refractive index layer with a bar coater so that the dry film thickness is 60 nm, and the mixture is dried at 65 ° C. for 4 minutes to volatilize the solvent to form a high refractive index layer. From the object side, it was cured by an ultraviolet irradiation treatment having an integrated light amount of 250 mJ / cm 2 to form a high refractive index layer (refractive index 1.76). In this way, the base layer 1 was manufactured.
- Example 1 The resulting base layer, on the surface to form a high refractive index layer, an optical interference layer forming composition 1 obtained in Preparation Example B1, using an inkjet device, the maximum thickness t m of the optical interference layer after drying It was painted to be 76 nm.
- the solvent was volatilized by drying at 65 ° C. for 4 minutes, and the solvent was cured by ultraviolet irradiation treatment with an integrated light amount of 250 mJ / cm 2 from the light interference layer forming composition side to form a light interference layer. In this way, a coating member having a base layer and a light interference layer formed from the light interference layer forming composition was formed.
- the test sample was cut into 10 mm ⁇ 10 mm, and the cross section of the optical interference layer was precipitated with a microtome (LEICA RM2265).
- the precipitated cross section is observed with an FE-SEM (S-4800 manufactured by Hitachi High-Technology), the thickness of the optical interference layer at 10 points is measured, and the average value of the maximum value and the minimum value is calculated to obtain the minimum value.
- the thickness (t min ) and the maximum thickness (t max ) were calculated.
- the refractive index for each layer was measured by an Abbe refractive index meter by a method according to JIS K0062.
- the refractive index of the optical interference layer was measured in the form of a coating member.
- the color difference ⁇ E was derived in accordance with JIS Z8730: 2009.
- the hues L (i), a (i) and b (i) in the base layer obtained as described above are measured, and similarly, the hues L 76 (ii) and a in the region at a thickness of 76 nm of the optical interference layer are measured. It was calculated from the values of 76 (ii) and b 76 (ii). The results are shown in Table 1.
- the optical interference layer forming composition 1 prepared in Preparation Example B1 was patterned and applied to three 50 mm square squares on a base layer of 150 ⁇ 250 mm using an inkjet device.
- the coated surface was evaluated according to the following evaluation criteria. (Evaluation criteria) ⁇ : The coated surface is contained in a square of 49 mm square to a square of 51 mm square. ⁇ : The coated surface fits in a square of 48 mm square to less than 49 mm square, or a square of more than 51 mm square to 52 mm square. X: The coated surface does not fit in the square of 48 mm square to the square of 52 mm square.
- the optical interference layer forming composition 1 prepared in Preparation Example B1 was patterned and applied to three 50 mm square squares on a base layer of 150 ⁇ 250 mm using an inkjet device.
- the maximum value of the color difference ( ⁇ E) was measured for three hues on the printed coated surface.
- the maximum value of this color difference ( ⁇ E) was evaluated according to the following criteria. (Evaluation criteria) ⁇ : 1 or less ⁇ : 1 or more, 1.5 or less ⁇ : 1.5 or more
- Pencil Hardness The hardness of the optical interference layer in the coating member obtained in Example 1 was evaluated. For the measurement, the pencil hardness was measured according to JIS K5600-5-4 (1999) and scratch hardness (pencil method).
- the light reflectance at a wavelength of 380 to 780 nm on the high refractive index layer (refractive index 1.76) side was measured.
- the results are shown in FIG. 1A.
- the light reflectance at a wavelength of 380 to 780 nm was measured for the light interference layer in the coating member obtained in Example 1.
- the intensity (reflectance) of the reflected light was measured every 5 nm in the region of the optical interference layer having a thickness of 76 nm using a spectrocolorimeter (SD3000 manufactured by Nippon Denshoku Kogyo Co., Ltd.).
- FIG. 1B Shown in.
- the curve shown as "optical interference” in each figure is the measurement result for the optical interference layer.
- the curve shown as "normal” is, for reference, the reflectance for the coating material having the base material and the base layer.
- Example 2 The coating member was formed in the same manner as in Example 1 except that the maximum thickness of the optical interference layer was changed. In addition, various evaluations were performed in the same manner as in Example 1. The results are shown in Table 1 and FIGS. 2 to 9.
- a coating member was formed in the same manner as in Example 1 except that the obtained light interference layer forming composition 2 was used to form a light interference layer having a thickness of 120 nm. Further, various physical properties and the like were evaluated in the same manner as in Example 1. The refractive index of the optical interference layer was 1.37. Table 2 shows detailed physical properties of Example 10. The results regarding reflectance are shown in FIG.
- Example 11 (Preparation Example B3) Preparation of PhotoInterference Layer Forming Composition 3
- Irgacure 127 (IGM) as a photopolymerization initiator is 0.63 parts by weight
- Aronix M-402 Toa Synthetic
- the light interference layer forming composition 3 was prepared by adjusting the solid content concentration to 30% by using 6.42 parts by weight of Sururia 4320 (Nikki Catalyst) as the fine particles and propylene glycol monomethyl ether (PGM) as the solvent. Prepared.
- a coating member was formed in the same manner as in Example 1 except that the obtained light interference layer forming composition 3 was used to form a light interference layer having a thickness of 120 nm. Further, various physical properties and the like were evaluated in the same manner as in Example 1. The refractive index of the optical interference layer was 1.48. Table 2 shows detailed physical properties of Example 11. The results regarding reflectance are shown in FIG.
- a coating member was formed in the same manner as in Example 1 except that the obtained light interference layer forming composition 4 was used to form a light interference layer having a thickness of 120 nm. Further, various physical properties and the like were evaluated in the same manner as in Example 1. The refractive index of the optical interference layer was 1.52. Table 2 shows detailed physical properties of Example 12. The results regarding the reflectance are shown in FIG.
- Example 13 The coating member was formed in the same manner as in Example 1 except that the base layer 2 was used and the thickness of the optical interference layer was 120 nm. Further, various physical properties and the like were evaluated in the same manner as in Example 1. Table 2 shows detailed physical properties of Example 13. The results regarding reflectance are shown in FIG.
- Example 14 (Preparation Example B5) Preparation of PhotoInterference Layer Forming Composition 5
- Irgacure 127 (IGM) as a photopolymerization initiator is 0.63 parts by weight
- Aronix M-402 Toa Synthetic
- the light interference layer forming composition 5 was prepared by adjusting the solid content concentration to 30% by using 19.41 parts by weight of Sururia 4320 (Nikki Catalyst) as the fine particles and propylene glycol monomethyl ether (PGM) as the solvent. Prepared.
- a coating member was formed in the same manner as in Example 1 except that the obtained light interference layer forming composition 5 was used to form a light interference layer having a thickness of 120 nm. Further, various physical properties and the like were evaluated in the same manner as in Example 1. The refractive index of the optical interference layer was 1.42. Table 2 shows detailed physical properties of Example 14. In addition, the result regarding the reflectance is shown in FIG.
- Example 15 In the optical interference layer forming composition 1 prepared in Preparation Example B1, the optical interference layer forming composition was adjusted so that 900 parts by mass of an organic solvent (PGM) was contained with respect to 100 parts by mass of the resin solid content. , A coating member was formed in the same manner as in Example 1. Further, various physical properties and the like were evaluated in the same manner as in Example 1. Table 2 shows detailed physical properties of Example 14. The results regarding the reflectance are shown in FIG.
- Example 16 In the optical interference layer forming composition 1 prepared in Preparation Example B1, the optical interference layer forming composition was adjusted so that 8000 parts by mass of an organic solvent (PGM) was contained with respect to 100 parts by mass of the resin solid content. , A coating member was formed in the same manner as in Example 1. Further, various physical properties and the like were evaluated in the same manner as in Example 1. Table 2 shows detailed physical properties of Example 14. In addition, the result regarding the reflectance is shown in FIG.
- PGM organic solvent
- Example 17 (Preparation Example B6) Preparation of Photointerference Layer Forming Composition 6
- Irgacure 127 (IGM) as a photopolymerization initiator is 0.63 parts by weight
- Aronix M-402 (Toa Synthetic) is 6.93 parts by weight as a photopolymerization initiator
- a fluorine-based additive As the solid content, DAC-HP (Daikin) was used at 2.67 parts by weight, thruria 4320 (Nikki catalyst) was used at 33.72 parts by weight as the fine particles for adjusting the refractive index, and propylene glycol monomethyl ether (PGM) was used as the solvent.
- the optical interference layer forming composition 6 was prepared by adjusting the concentration to 30%.
- a coating member was formed in the same manner as in Example 1 except that the obtained light interference layer forming composition 6 was used to form a light interference layer having a thickness of 120 nm. Further, various physical properties and the like were evaluated in the same manner as in Example 1. The refractive index of the optical interference layer was 1.38. Table 2 shows detailed physical properties of Example 14. In addition, the result regarding the reflectance is shown in FIG.
- a coating member was formed in the same manner as in Example 1 except that the obtained light interference layer forming composition 7 was used to form a light interference layer having a thickness of 120 nm. Further, various physical properties and the like were evaluated in the same manner as in Example 1. The refractive index of the optical interference layer was 1.38. Table 2 shows detailed physical properties of Example 14. The results regarding reflectance are shown in FIG.
- Comparative Examples 1 to 3 are comparisons in which the optical interference layer forming composition according to the present disclosure prepared in Preparation Example 1, which is a composition for inkjet coating, was coated by a coating method other than the inkjet method. This is an example. Detailed results are shown in Table 3. As can be understood from this result, when the composition for inkjet coating was coated by another method, a coating film having excellent reflection characteristics and designability could not be obtained. Comparative Example 4 is a comparative example in which the film thickness of the optical interference layer is outside the scope of the present disclosure. Detailed results are shown in Table 3. As can be understood from this result, when the light interference layer exceeds a specific film thickness, it is not possible to separately apply the coating film, and it is not possible to form a coating film having excellent design such as gradation.
- Optical interference layer forming composition 8 Using the above clear coating composition, 452.01 parts by weight of thruria 4320 (Nikki catalyst) as fine particles for adjusting the refractive index, and propylene glycol monomethyl ether (PGM) as a solvent, the solid content concentration is 30%. The composition 8 was prepared to form an optical interference layer. An optical interference layer was formed in the same manner as in Example 1. Detailed results are shown in Table 3. As a result, the obtained coating member could not have sufficient hardness.
- Comparative Example 6 Comparative Example 7
- Comparative Examples 8 and 9 are Comparative Examples in which the value obtained by subtracting the refractive index of the optical interference layer from the refractive index of the base layer (refractive index of the base layer-refractive index of the optical interference layer) is outside the scope of the present disclosure.
- various physical properties and the like were evaluated in the same manner as in Example 1 except that the base layer 2 was used. The results are shown in Table 3. As a result, there was no change in color tone and the design was poor.
- Reference Examples 2 and 3 are compositions that are not supposed to be used in inkjet coating, and compositions capable of forming an optical interference layer by using a method other than the inkjet method such as screen printing are coated by the inkjet method. Then, an attempt was made to form a coating film. For example, in Reference Example 2, the viscosity was extremely low, and when inkjet coating was performed, unevenness and poor finish occurred. On the other hand, in Reference Example 3, the viscosity was high, and a coating film having a thickness of 600 nm or less could not be formed by the inkjet method.
- the coating member according to the present disclosure is a coating member capable of improving both antireflection and design.
- light leakage in the display area and the non-display area can be suppressed, and the antireflection property is excellent.
- it can be seen that it is a coating member that has high paintability and is rich in design selectivity.
- it is a coating member with no or very little unevenness, and also has good coating film hardness.
- the coating member of the present disclosure can improve both antireflection and design. Further, a coating member having high paintability and abundant design selectivity is provided.
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Abstract
Description
しかし、特許文献1に記載されている表示用前面板は、表示領域と非表示領域との界面と、反射防止膜が存在する領域と反射防止膜が存在しない領域との界面とを合わせる工程が必要であり、その上、反射防止膜が存在する領域と、反射防止膜が存在しない領域とは、異なる膜材料から形成される。したがって、特許文献1の表示用前面板は、表示領域と非表示領域の境界部分において、光漏れ、光の乱反射などが生じるおそれがある。更に、十分な意匠性を発揮できないおそれがある。
[1]本開示のコーティング部材は、基層と、光干渉層形成組成物から形成された光干渉層とを有するコーティング部材であって、
基層の視認側の面における一部に、光干渉層が配置され、
光干渉層は、0nmより大きく600nm以下の範囲内であり、
0.08<(前記基層の屈折率)−(前記光干渉層の屈折率)<0.45の関係を有し、
光干渉層形成組成物は、インクジェット塗装用の組成物であり、
光干渉層は、インクジェット法により形成された光干渉層である。
[2]別の実施形態において、本開示のコーティング部材は、基層と、光干渉層形成組成物から形成された光干渉層とを有するコーティング部材であって、
基層の視認側の面における少なくとも一部に、光干渉層が配置され、
光干渉層は、0nmより大きく600nm以下の範囲内で、
最小厚さ(tmin)と、最大厚さ(tmax)とを有し、更に、
最小厚さ(tmin)<最大厚さ(tmax)の関係を有し、
0.08<(前記基層の屈折率)−(前記光干渉層の屈折率)<0.45の関係を有し、
前記光干渉層形成組成物は、インクジェット塗装用の組成物であり、
前記光干渉層は、インクジェット法により形成された光干渉層である、
コーティング部材。
[3]一実施形態において、本開示のコーティング部材は、
基層における色相のL値、a値及びb値を、L(i)、a(i)及びb(i)とし、
光干渉層の厚さt(nm)における色相のL値、a値及びb値を、Lt(ii)、at(ii)及びbt(ii)とし、
ここで、tは0nmより大きく600nm以下であり、
基層におけるL(i)、a(i)及びb(i)と、
光干渉層における、厚さt(nm)でのLt(ii)、at(ii)及びbt(ii)とが、以下の式(1)~式(3)の少なくとも1つを満たす、
コーティング部材;
0<L(i)−Lt(ii)<35 式(1)
−30<a(i)−at(ii)<30 式(2)
−40<b(i)−bt(ii)<40 式(3)。
[4]一実施形態において、本開示のコーティング部材は、
基層における色相のL値、a値及びb値を、L(i)、a(i)及びb(i)とし、
光干渉層における、厚さt(nm)での色相のL値、a値及びb値を、Lt(ii)、at(ii)及びbt(ii)とし、
ここで、tは0nmより大きく600nm以下であり、
基層における色相と、光干渉層における、厚さt(nm)での色相の差ΔEが
1<ΔE<50の関係を示す。
[5]一実施形態において、本開示のコーティング部材は、光干渉層形成組成物が、樹脂固形分100質量部に対し、300質量部以上9900質量部の有機溶媒を含む。
[6]一実施形態において、本開示のコーティング部材は、光干渉層形成組成物が、光干渉層形成樹脂成分を含み、光干渉層形成樹脂成分は、不飽和二重結合を有し、活性エネルギー線硬化型の樹脂成分である。
[7]一実施形態において、本開示のコーティング部材は、光干渉層形成組成物が、多官能アクリレート及びフッ素樹脂を含む。
[8]一実施形態において、本開示のコーティング部材は、光干渉層形成組成物が、多官能アクリレート及びシリコーン変性アクリレート及びフッ素樹脂を含む。
[9]一実施形態において、本開示のコーティング部材は、車両の室内に用いる加飾用部材である。
[10]別の実施形態において、本開示は、コーティング部材の製造方法であって、
基層の視認側の面における少なくとも一部に、光干渉層形成組成物をインクジェット法により塗装すること、及び
活性エネルギー線を照射し、光干渉層を形成すること、
を含むコーティング部材の製造方法を提供する。
例えば、反射防止性を向上させると、意匠性が単調になる傾向があった。一方、意匠性を向上させると、コーティング部材を製造する工程が複雑となる傾向があった。
また、特許文献1に記載されるように、反射防止機能を有する領域を形成する工程と、意匠性を有する領域を形成する工程を経て得られたコーティング部材は、これらの境界領域において、光の反射が生じたり、光漏れが生じたりするだけでなく、意匠性が単純となり得るおそれがあった。
基層と、光干渉層形成組成物から形成された光干渉層とを有するコーティング部材であって、
基層の視認側の面における一部に、光干渉層が配置され、
光干渉層は、0nmより大きく600nm以下の範囲内であり、
0.08<(前記基層の屈折率)−(前記光干渉層の屈折率)<0.45の関係を有し、
光干渉層形成組成物は、インクジェット塗装用の組成物であり、
光干渉層は、インクジェット法により形成された光干渉層である、
コーティング部材である。
基層と、光干渉層形成組成物から形成された光干渉層とを有するコーティング部材であって、
基層の視認側の面における少なくとも一部に、光干渉層が配置され、
光干渉層は、0nmより大きく600nm以下の範囲内で、
最小厚さ(tmin)と、最大厚さ(tmax)とを有し、更に、
最小厚さ(tmin)<最大厚さ(tmax)の関係を有し、
0.08<(前記基層の屈折率)−(前記光干渉層の屈折率)<0.45の関係を有し、
光干渉層形成組成物は、インクジェット塗装用の組成物であり、
光干渉層は、インクジェット法により形成された光干渉層である。
例えば、本開示に係る光干渉層は、このような特定の屈折率の関係を有するため、優れた反射防止性を有することができる。
更に、光干渉層は、0nmより大きく600nm以下の範囲内であり、光干渉層が均一な厚さを有する。
別の実施形態においては、光干渉層は、0nmより大きく600nm以下の範囲内で、最小厚さ(tmin)と、最大厚さ(tmax)とを有し、更に、最小厚さ(tmin)が最大厚さ(tmax)よりも小さい関係を有するので、光の干渉、反射を、任意に調整でき、所望の外観、即ち意匠性にも優れた外観を導くことができる。
例えば、光干渉層は、パターニング、グラデーションを呈することができる。また、光の干渉を調整でき、反射率も調整できるので、例えば、金属調の外観を有するコーティング部材を提供することができる。
別の形態においては、光干渉層は、見る角度、光の当たり方等により、様々な色を呈することができる。
更に、本開示のコーティング部材は、一種類の光干渉層形成組成物から光干渉層を形成できるので、複数種の塗料組成物を用いなくてもよい。したがって、異なる塗料組成物を用いることで生じ得る、意図しない光の屈折、反射などを抑制でき、その上、鮮やかな発色を呈することができる。
例えば、光干渉層は、一実施形態において均一な厚みであってよく、別の実施形態において、基層の表面から、厚さ600nm以下の範囲で、勾配を有する層であってもよい。一実施形態において、光干渉層は、特に優れた反射防止性が要求される範囲では平坦な(均一な)厚さを有し、意匠性が要求される領域では、勾配を有する層であってもよい。このような形態において、本開示の光干渉層は、主に優れた反射防止性を示す領域と、主に優れた意匠性を示す領域が連続し得る。このため、反射防止性を示す領域と、優れた意匠性を示す領域の境界部分における光の漏れ、乱反射などを抑制できる。
また、大型化された被塗物、シームレス化された被塗物に対しても、ムラの少ない光干渉層を形成できる。例えば、このような大型化された被塗物についても、同一面で塗分けが可能である。
その上、インクジェット方式を用い、膜厚の極めて薄い光干渉層を形成できるので、コーティング部材全体の厚みを低減できる。
このように、本開示のコーティング部材は、極めて高い意匠性と、ディスプレイ等の視認性を向上できる反射防止能を備え、その上、優れた機械的性質を備えている。
また、本開示のコーティング部材は、高い架橋密度を有することも可能であり、各種センサを含めたパネル等への展開も可能である。
必要に応じて、局所的に赤外線反射率を低下させることができ、例えば、その領域に赤外線センサを搭載することが可能となる。このような形態においては、赤外線センサを、視認側から目立たないように搭載することが可能となり、コーティング部材に関するデザインの選択性が幅広くなる。また、センサ機能の向上にも寄与できる。
別の実施形態において、光干渉層は、0nmより大きく600nm以下の範囲内で最小厚さ(tmin)と、最大厚さ(tmax)とを有し、更に、最小厚さ(tmin)<最大厚さ(tmax)の関係を有する。
光干渉層がこのような厚さを有することにより、反射防止性と、意匠性が共に優れた光干渉層を得ることができる。また、表面の平滑性に優れ、ムラが生じない、極めてムラの小さい光干渉層を得ることができ、高い光沢性を有することもできる。
上述の形態をとるため、光干渉層は、基層の同一面上に0nmより大きく600nm以下の範囲で均一な厚さを有している、又は厚さが塗り分けられている。また、任意の膜厚で(可変的に)塗り分けが可能である。
一実施形態において、光干渉層の厚さは、0.1nm以上、1nm以上、10nm以上、30nm以上、50nm以上の厚さを有する。
例えば、光干渉層は、0.1nm以上600nm以下の範囲内で、均一な厚さを有してもよく、別の形態において、このような範囲内で最小厚さ(tmin)と、最大厚さ(tmax)とを有し、最小厚さ(tmin)と、最大厚さ(tmax)とが所定の関係を有する。
最大厚さ(tmax)がこのような範囲内であり、本開示の条件を満たすことにより、反射防止性と、意匠性が共に優れた光干渉層を得ることができる。
膜厚の測定は、例えばミクロトームなどの器具を用いて断面を析出させ、レーザー顕微鏡、FE−SEMなどを用いて断面観察を行うことによって、測定することができる。
0.08<(基層の屈折率)−(光干渉層の屈折率)<0.45。例えば、
0.10<(基層の屈折率)−(光干渉層の屈折率)<0.43、
0.15<(基層の屈折率)−(光干渉層の屈折率)<0.42、
0.18<(基層の屈折率)−(光干渉層の屈折率)<0.41、及び
0.20<(基層の屈折率)−(光干渉層の屈折率)<0.40、
からなる群から選択される関係を有してもよい。
基層の屈折率と光干渉層の屈折率がこのような関係を有することにより、色調差を十分に呈することができ、更に、光干渉層の物性に優れたコーティング部材を得ることができる。
屈折率は、JIS K0062に準拠した方法により、アッベ屈折率計によって測定することができる。
別の実施形態において、干渉層の屈折率は、1.36以上1.80以下であり、例えば、1.36以上1.76以下であり、1.36以上1.60以下であってよい。
光干渉層の屈折率がこのような範囲内であることにより、コーティング部材は、優れた反射防止性を示すことができる。また、所望の波長における光線の反射率を低減でき、ディスプレイの内部に設けられ得るセンサが有する特性を、十分に発揮できる。更に、所望の波長範囲を示す光線の透過率を向上させ、その上、光線の透過率が向上した領域の意匠性を向上させることができる。したがって、センサなどが要求する光線を透過させ、その上、優れた意匠性(例えば、金属調外観)を示すコーティング部材を得ることができる。
基層における色相のL値、a値及びb値を、L(i)、a(i)及びb(i)とし、
光干渉層の厚さt(nm)における色相のL値、a値及びb値を、Lt(ii)、at(ii)及びbt(ii)とし、
ここで、tは0nmより大きく600nm以下であり、
基層におけるL(i)、a(i)及びb(i)と、
光干渉層における、厚さ(t)nmでのLt(ii)、at(ii)及びbt(ii)とが、以下の式(1)~式(3)の少なくとも1つを満たす;
0<L(i)−Lt(ii)<35 式(1)
−30<a(i)−at(ii)<30 式(2)
−40<b(i)−bt(ii)<40 式(3)。
一実施形態において、本開示のコーティング部材は、上記式(1)~(3)を全て満たしてもよく、これらのうち少なくとも2つを満たしてもよい。
−30<L(i)−Lt(ii)<35 式(1)
例えば、
−20<L(i)−Lt(ii)<35 式(1)であってもよく、
−10<L(i)−Lt(ii)<35 式(1)
の関係であってもよい。
このような関係を有する場合においても、本開示の有する効果を奏し得る。
0<|L(i)−Lt(ii)|<35。ここで、記号||は絶対値を意味する。
例えば、1.5<|L(i)−Lt(ii)|<35
式(1)
の関係を有し得る。
このような関係を有する場合においても、本開示の有する効果を奏し得る。
−30<a(i)−at(ii)<30 式(2)
(ただし、0を除く)関係を有してもよい。
また、本開示に記載の種々の(a(i)−at(ii))の関係においても、0を除く形態を含み得る。
別の実施形態において、a(i)及びat(ii)は、次の関係を有してもよい。
0<|a(i)−at(ii)|<30 式(2)ここで、記号||は絶対値を意味する。
このような関係を有する場合においても、本開示の有する効果を奏し得る。
−40<b(i)−bt(ii)<40 式(3)
(ただし、0を除く)関係を有してもよい。
また、本開示に記載の種々の(b(i)−bt(ii))の関係においても、0を除く形態を含み得る。
別の実施形態において、b(i)−bt(ii)は、次の関係を有してもよい。
0<|b(i)−bt(ii)|<40 式(3)ここで、記号||は絶対値を意味する。
このような関係を有する場合においても、本開示の有する効果を奏し得る。
0<L(i)<40
−30<a(i)<30
−30<b(i)<30
例えば、色相のL値、a値及びb値は、日本電色工業製のSD3000を用い、以下の条件で測定できる。
光源:D65
測定方法:反射
視野:10度
正反射光処理:SCI。
本開示のコーティング部材は、以下の式(1)~式(3)の少なくとも1つを満たす。
1.5<L(i)−Lt(ii)<35 式(1)
−25<a(i)−at(ii)<25 式(2)
−35<b(i)−bt(ii)<30 式(3)
特定の理論に限定して解釈すべきではないが、本開示における光干渉層形成組成物は、インクジェット塗装用の組成物であり、スクリーン印刷法、グラビア印刷法、スピンコート法等と比べて、光干渉層の厚さの制御を、より繊細に行うことができ、例えば、光干渉層の厚さの傾斜を、スクリーン印刷法、グラビア印刷法、スピンコート法等と比べてスムーズに形成できる。
また、本開示のコーティング部材は、本開示における光干渉層形成組成物がインクジェット塗装用の組成物であるため、塗装精度が高い。このため、設計された領域に、所望の塗装を行うことができ、グラデーション等の色彩を、より美しく再現できる。
さらに、大型化された被塗物、シームレス化された被塗物に対しても、ムラの少ない光干渉層を形成できる。このように、本開示のコーティング部材は、極めて高い意匠性を有することができる。
その上、高い意匠性を備えながら、光干渉層の所望の領域における赤外線等の透過率をコントロール、例えば、赤外線透過率を高くすることができるので、赤外線センサを設けることができる。したがって、光干渉層の所望の領域において、高い意匠性を有しつつ、その上、高い赤外線透過率を示すことができる。
以下の式(1)~式(3)の少なくとも1つを満たす
10<L(i)−L76(ii)<35 式(1)
−30<a(i)−a76(ii)<0 式(2)
−30<b(i)−b76(ii)<0 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
10<L(i)−L120(ii)<35 式(1)
−10<a(i)−a120(ii)<5 式(2)
0<b(i)−b120(ii)<25 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
10<L(i)−L129(ii)<35 式(1)
−10<a(i)−a129(ii)<5 式(2)
0<b(i)−b129(ii)<25 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
0<L(i)−L174(ii)<10 式(1)
0<a(i)−a174(ii)<10 式(2)
0<b(i)−b174(ii)<15 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
0<L(i)−L217(ii)<10 式(1)
0<a(i)−a217(ii)<10 式(2)
−30<b(i)−b217(ii)<0 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
0<L(i)−L260(ii)<20 式(1)
−20<a(i)−a260(ii)<0 式(2)
−40<b(i)−b260(ii)<0 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
0<L(i)−L307(ii)<25 式(1)
−30<a(i)−a307(ii)<0 式(2)
10<b(i)−b307(ii)<40 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
10<L(i)−L326(ii)<25 式(1)
−20<a(i)−a326(ii)<0 式(2)
10<b(i)−b326(ii)<40 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
0<L(i)−L379(ii)<10 式(1)
10<a(i)−a379(ii)<30 式(2)
−30<b(i)−b379(ii)<0 式(3)。
以下の式(1)~式(3)の少なくとも1つを満たす
0<L(i)−L431(ii)<10 式(1)
−10<a(i)−a431(ii)<10 式(2)
−30<b(i)−b431(ii)<0 式(3)。
基層における色相のL値、a値及びb値を、L(i)、a(i)及びb(i)とし、
光干渉層における、厚さt(nm)での色相のL値、a値及びb値を、Lt(ii)、at(ii)及びbt(ii)とし、
ここで、tは0nmより大きく以上600nm以下であり、
基層における色相と、光干渉層における、厚さt(nm)での色相の差ΔEが
1<ΔE<50
の関係を示す。
ΔE=[(ΔL)2+(Δa)2+(Δb)2]1/2
なお、基層における色相のL値、a値及びb値を、L(i)、a(i)及びb(i)とし、
光干渉層における、厚さt(nm)での色相のL値、a値及びb値を、Lt(ii)、at(ii)及びbt(ii)とし、
ΔL=L(i)−Lt(ii)
Δa=a(i)−at(ii)
Δb=b(i)−bt(ii)
とする。
一実施形態において、本開示のコーティング部材は、上記式(1)~(3)を全て満たしてもよく、これらのうち少なくとも2つを満たしてもよい。
反射率がこのような範囲内であることにより、コーティング部材表面の反射率及び透過率を任意に可変でき、例えば、光干渉技術による反射防止と、金属調等の意匠性を共に備えることができる。
反射率がこのような範囲内であることにより、コーティング部材表面の反射率及び透過率を任意に可変でき、例えば、光干渉技術による反射防止と、金属調等の意匠性を共に備えることができる。
したがって、光の干渉をより効果的に調整でき、更に意匠性にも優れた外観を導くことができる。
本開示の光干渉層は、光干渉層形成組成物から形成された層である。例えば、光干渉層形成組成物は、光干渉層形成樹脂成分を含み、光干渉層形成組成物は、インクジェット塗装用の組成物である。
光干渉層形成組成物は、インクジェット塗装用の組成物であるため、膜厚制御及び、塗り分け(パターニング)を極めて高い精度で行うことができる。また、ムラの発生を低減又は抑制できる。
なお、光干渉層形成組成物が光干渉層形成樹脂成分を含む形態において、樹脂固形分100質量部は、光干渉層形成樹脂成分における、樹脂成分の固形分の合計が100質量部であることを意味する。
本開示の光干渉層は、本開示にかかる特定の光干渉層形成組成物を、インクジェット塗装を用いて施すことにより形成された層であるので、光干渉層の膜厚を、より細かく、様々な範囲で設計できる。例えば、光干渉層は、より複雑なパターニング、グラデーションを呈することができる。また、光の干渉をさらに細かく調整でき、反射率もより細かく調整できるので、例えば、金属調の外観を有するコーティング部材を提供することができる。
別の形態においては、光干渉層は、見る角度、光の当たり方等により、様々な色を呈することができる。更に、光干渉層のムラ、基層と光干渉層の境界領域におけるムラを抑制でき、優れた意匠性を有するコーティング部材を得ることができる。
また、光干渉層形成組成物は、多官能アクリレート及びフッ素樹脂を含んでもよく、多官能アクリレート、シリコーン変性アクリレート及びフッ素樹脂を含んでもよい。
活性エネルギー線硬化型の樹脂成分は、活性エネルギー線(例えば紫外線)により架橋し、硬化させることができる、モノマー、オリゴマー、あるいはポリマー(樹脂ともいう)である。
このような活性エネルギー線硬化型の樹脂成分の具体例として、不飽和二重結合基を少なくとも1つ有するモノマー、オリゴマーまたはポリマー、より具体的には、不飽和二重結合基を少なくとも1つ有する、(メタ)アクリレートモノマー、(メタ)アクリレートオリゴマー、(メタ)アクリレートポリマー、ウレタン(メタ)アクリレートモノマー、ウレタン(メタ)アクリレートオリゴマー、ウレタン(メタ)アクリレートポリマー、シリコーン(メタ)アクリレートおよびこれらの変性モノマー、オリゴマー、ポリマーなど、が挙げられる。これらのモノマー、オリゴマー、ポリマーなどを組合せて用いてもよい。
なお「(メタ)アクリレート」は、アクリレートおよび/またはメタクリレートを表わす。ある形態において、光干渉層形成組成物は、不飽和二重結合含有アクリル樹脂(不飽和二重結合含有アクリルポリマーともいう)を含む。
ある形態において、光干渉層形成組成物は、非反応性のアクリル樹脂を含んでもよい。また、光干渉層形成組成物は、不飽和二重結合含有アクリル樹脂及び/または非反応性のアクリル樹脂を含み得る。
光干渉層形成組成物は、例えば、不飽和二重結合含有アクリル樹脂及び/または非反応性のアクリル樹脂を複数種含んでもよい。
なお、本明細書において、非反応性のアクリル樹脂とは、活性エネルギー線を照射しても反応しない、又は、ほとんど反応性を示さないアクリル樹脂であり、例えば、紫外線照射をしても反応しない、又は、ほとんど反応性を示さないアクリル樹脂である。
このような多官能ウレタン(メタ)アクリレートと、上述したようなアクリル樹脂とを含むことにより、複雑な形状であっても、クラック等の欠陥が生じること無く、優れた外観を有する成形品を得ることができる。
加えて、優れた耐摩耗性及び耐薬品性を有し、その上、高い硬度を有する成形品を得ることができる。
例えば、光干渉層形成組成物は、不飽和二重結合含有アクリル樹脂及び/または非反応性のアクリル樹脂と、重量平均分子量(Mw)が700~100000である多官能シリコーン(メタ)アクリレートと、フッ素樹脂と、無機酸化微粒子とを含む。
特定の理論に限定して解釈されるべきではないが、多官能シリコーン(メタ)アクリレートを含むことにより、低表面張力化、優れたレベリング性及びタックの低減が可能となる。一方、フッ素樹脂を含むことにより、コーティング層(塗膜)に滑り性を付与できる。更に、無機酸化微粒子を含むことにより、優れた耐摩耗性を付与でき、タックの低減が可能となる。
多官能シリコーン(メタ)アクリレートモノマーまたはオリゴマーとして、市販品を用いてもよい。市販品として、例えば、以下のものを挙げられる。
メタクリロイル基及びアクリロイル基を有する化合物
BYK社製 : BYK−UV3500、BYK−UV3570
信越化学工業社製 : 信越シリコーン X−22−164、信越シリコーン X−22−164AS、信越シリコーン X−22−164A、信越シリコーン X−22−164B、信越シリコーン X−22−164C、信越シリコーン X−22−164E、信越シリコーン X−22−174DX、信越シリコーン X−22−2426、信越シリコーン X−22−2475、KER−4000−UV、KER−4700−UV、KER−4710−UV、KER−4800−UV、
JNC社製 : FM−0711、FM−0721、FM−0725、TM−0701、FM−7711、FM−7721、FM−7725
エボニックジャパン :
TEGO(登録商標) Rad 2010、TEGO(登録商標) Rad 2011、TEGO(登録商標) Rad 2100、TEGO(登録商標) Rad 2200、TEGO(登録商標) Rad 2300、TEGO(登録商標) Rad 2400、TEGO(登録商標) Rad 2500等が挙げられる。
(メタ)アクリロイル基含有のフッ素原子含有基を有する材料とフッ素樹脂がシリコーン骨格の化合物を有する材料
日本合成化学工業社製 : 紫光 UV−AF305
T&K TOKA : ZX−212、ZX−214−A
信越化学工業社製 : KY−1203等が挙げられる。
本開示において、フッ素系樹脂は、シリコーン骨格の化合物を含まないフッ素含有樹脂を意味する。例えば、パーフロロオクチルアクリレート、アクリル変性パーフロロポリエーテル等があげられる。フッ素含有樹脂は、メタクリロイル基、アクリロイル基の官能基が変性されてもよい。
フッ素系樹脂は、例えば、以下の市販品であってよい。
DIC社製 : メガファックRS−72−K、メガファックRS−75、メガファックRS−76−E、メガファックRS−76−NS、メガファックRS−77
ダイキン工業社製 : オプツール DAC−HP
ソルベイソレクシス社製 : FLUOROLINK MD700、FLUOROLINK AD1700
ネオス社製 : フタージェント601ADH2等。
無機酸化微粒子として、例えば、シリカ(SiO2)粒子、中空シリカ粒子、フッ化マクネシウム粒子、アルミナ粒子、チタニア粒子、酸化スズ粒子、アンチモンドープ酸化スズ(略称;ATO)粒子、酸化亜鉛粒子等が挙げられる。さらに、官能基が修飾されたものであってもよい。官能基は、(メタ)アクリロイル基が望ましい。有機微粒子としては、アクリル微粒子、中空アクリル微粒子、ポリスチレン微粒子、メラミン微粒子などがあげられる。有機微粒子および無機酸化微粒子、例えば、有機微粒子および無機酸化微粒子の1次粒径は、透明性と塗料安定性の観点より5nm~100nmである。なお、本明細書における粒状物の平均粒子径は、断面電子顕微鏡の画像から、画像処理ソフトウェアを用いて測定される値である。
例えば、無機酸化微粒子を配合することにより、未硬化塗膜に対して、体積収縮を緩和できる。更に、例えば、無機酸化微粒子を配合することで、前記効果に加え、塗膜に剛性を付与することができる。
また、無機酸化微粒子を配合することにより、硬化塗膜に対して、硬化収縮によるカールの発生等を抑制でき、例えば、無機酸化微粒子を配合することにより、前記効果に加えて、耐摩耗性を付与できる。
本発明の光干渉層形成組成物は、光重合開始剤を含むのが好ましい。光重合開始剤が存在することによって、活性エネルギー線、例えば紫外線により樹脂成分が良好に重合することになる。光重合開始剤の例として、例えば、アルキルフェノン系光重合開始剤、アシルフォスフィンオキサイド系光重合開始剤、チタノセン系光重合開始剤、オキシムエステル系重合開始剤などが挙げられる。アルキルフェノン系光重合開始剤として、例えば2,2−ジメトキシ−1,2−ジフェニルエタン−1−オン、1−ヒドロキシ−シクロヘキシル−フェニル−ケトン、2−ヒドロキシ−2−メチル−1−フェニル−プロパン−1−オン、1−[4−(2−ヒドロキシエトキシ)−フェニル]−2−ヒドロキシ−2−メチル−1−プロパン−1−オン、2−ヒロドキシ−1−{4−[4−(2−ヒドロキシ−2−メチル−プロピオニル)−ベンジル]フェニル}−2−メチル−プロパン−1−オン、2−メチル−1−(4−メチルチオフェニル)−2−モルフォリノプロパン−1−オン、2−ベンジル−2−ジメチルアミノ−1−(4−モルフォリノフェニル)−ブタノン−1、2−(ジメチルアミノ)−2−[(4−メチルフェニル)メチル]−1−[4−(4−モルホリニル)フェニル]−1−ブタノンなどが挙げられる。アシルフォスフィンオキサイド系光重合開始剤として、例えば2,4,6−トリメチルベンゾイル−ジフェニル−フォスフィンオキサイド、ビス(2,4,6−トリメチルベンゾイル)−フェニルフォスフィンオキサイドなどが挙げられる。チタノセン系光重合開始剤として、例えば、ビス(η5−2,4−シクロペンタジエン−1−イル)−ビス(2,6−ジフルオロ−3−(1H−ピロール−1−イル)−フェニル)チタニウムなどが挙げられる。オキシムエステル系重合開始剤として、例えば、1.2−オクタンジオン,1−[4−(フェニルチオ)−,2−(O−ベンゾイルオキシム)]、エタノン,1−[9−エチル−6−(2−メチルベンゾイル)−9H−カルバゾール−3−イル]−,1−(0−アセチルオキシム)、オキシフェニル酢酸、2−[2−オキソ−2−フェニルアセトキシエトキシ]エチルエステル、2−(2−ヒドロキシエトキシ)エチルエステルなどが挙げられる。これらの光重合開始剤は、1種を単独で用いてもよく、また2種以上を併用してもよい。
光干渉層形成組成物は、溶媒を含んでもよい。
溶媒は、特に限定されるものではなく、組成物中に含まれる成分、塗布される基材の種類および組成物の塗布方法などを考慮して適時選択することができる。用いることができる溶媒の具体例としては、例えば、トルエン、キシレンなどの芳香族系溶媒;メチルエチルケトン、アセトン、メチルイソブチルケトン、シクロヘキサノンなどのケトン系溶媒;ジエチルエーテル、イソプロピルエーテル、テトラヒドロフラン、ジオキサン、エチレングリコールジメチルエーテル、エチレングリコールジエチルエーテル、ジエチレングリコールジメチルエーテル、ジエチレングリコールジエチルエーテル、プロピレングリコールモノメチルエーテル(PGM)、アニソール、フェネトールなどのエーテル系溶媒;酢酸エチル、酢酸ブチル、酢酸イソプロピル、エチレングリコールジアセテートなどのエステル系溶媒;ジメチルホルムアミド、ジエチルホルムアミド、N−メチルピロリドンなどのアミド系溶媒;メチルセロソルブ、エチルセロソルブ、ブチルセロソルブなどのセロソルブ系溶媒;メタノール、エタノール、プロパノール、イソプロピルアルコール、ブタノール、イソブチルアルコールなどのアルコール系溶媒;ジクロロメタン、クロロホルムなどのハロゲン系溶媒;などが挙げられる。これらの溶媒を単独で使用してもよく、また2種以上を併用してもよい。これらの溶媒のうち、エステル系溶媒、エーテル系溶媒、アルコール系溶媒およびケトン系溶媒が好ましく使用される。
本開示に係る基層は、本開示における特定の条件を満たす限り、適宜選択できる。例えば、基層は単層であってよく、複層であってよい。一実施形態において、基層は、本開示に係る光干渉層と隣接する側、即ち、視認側から順に、高屈折率層、中屈折率層、ベース層(例えば、ハードコート層)を有する構造であってもよい。更に、ベース層における中屈折率層とは反対側の面に、基材を有してもよい。
一実施形態において、基層は、本開示に係る光干渉層と隣接する側、即ち、視認側から順に、少なくともベース層及び基材を有する。
無機酸化微粒子として、例えば、シリカ(SiO2)粒子、アルミナ粒子、チタニア粒子、酸化ジルコニア粒子、酸化スズ粒子、アンチモンドープ酸化スズ(略称;ATO)粒子、酸化亜鉛粒子等が挙げられる。例えば、官能基が修飾されたものが望ましい。官能基は、(メタ)アクリロイル基が望ましい。無機酸化微粒子、例えば、無機酸化微粒子の1次粒径は、透明性と塗料安定性の観点より5nm~100nmである。なお、本明細書における粒状物の平均粒子径は、断面電子顕微鏡の画像から、画像処理ソフトウェアを用いて測定される値である。
例えば、無機酸化微粒子を配合することにより、未硬化塗膜に対して、体積収縮を緩和できる。更に、例えば、無機酸化微粒子を配合することで、前記効果に加え、塗膜に剛性を付与することができる。
また、無機酸化微粒子を配合することにより、硬化塗膜に対して、硬化収縮によるカールの発生等を抑制でき、例えば、無機酸化微粒子を配合することにより、前記効果に加えて、耐摩耗性を付与できる。
住友大阪セメント社製 :AS−150I、AS−150T
ビックケミー ジャパン社製 : NANOBYK−3601、NANOBYK−3602、NANOBYK−3610等が挙げられる。
酸化ジルコニア粒子としては
堺化学工業製:SZR−K、SZR−KM
CIKナノテック製:ZRANB15WT%−P02、ZRMIBK15WT%−P01、ZRMIBK15WT%−F85
ソーラー製:NANON5ZR−010、NANON5ZR−020等が挙げられる。
また、本開示に係る樹脂基材は、ポリスチレン、アクリロニトリル−スチレン共重合体等のスチレン系フィルム;ポリ塩化ビニル、ポリエチレン、ポリプロピレン、環状ないしノルボルネン構造を有するポリオレフィン、エチレン−プロピレン共重合体等のオレフィン系フィルム;ナイロン、芳香族ポリアミド等のアミド系フィルム等の、樹脂基材が挙げられる。これらの樹脂基材は透明樹脂基材であってもよい。
さらに、本開示に係る樹脂基材は、ポリイミド、ポリスルホン、ポリエーテルスルホン、ポリエーテルエーテルケトン、ポリフェニレンスルフィド、ポリビニルアルコール、ポリ塩化ビニリデン、ポリビニルブチラール、ポリアリレート、ポリオキシメチレン、エポキシ樹脂、および上記ポリマーのブレンド物等の、樹脂基材が挙げられる。これらの樹脂基材は透明樹脂基材であってもよい。
さらに、本開示に係る樹脂基材は、複数の樹脂基材が積層されたものであってもよい。例えば、アクリル系樹脂からなるフィルムおよびポリカーボネート系樹脂からなるフィルムの積層部材またはシートの積層部材であってもよい。これらの積層部材は、透明な積層部材であってもよい。
フィルム基材の厚さは、例えば0.01mm以上5mm以下であってよい。
別の実施形態において、本開示は、基層の視認側の面における少なくとも一部に、本開示に係る光干渉層形成組成物をインクジェット法により塗装すること、及び、
活性エネルギー線を照射し、光干渉層を形成することを含むコーティング部材の製造方法を提供する。この方法を用いて、本開示に係るコーティング部材を製造できる。
またこの照射光の波長は特に限定されるものではないが、例えば380nm以下の波長を有する紫外光などを用いることができる。このような光は、高圧水銀灯、超高圧水銀灯などを用いて得ることができる。
本開示のコーティング部材は、必要に応じて更に加飾層を有してもよく、例えば、基層の光干渉層とは反対側に加飾層を有してもよい。
印刷層に用いられるインキの顔料としては、例えば、次のものが使用できる。通常、顔料として、黄色顔料としてはポリアゾ等のアゾ系顔料、イソインドリノン等の有機顔料またはチタンニッケルアンチモン酸化物等の無機顔料、赤色顔料としてはポリアゾ等のアゾ系顔料、キナクリドン等の有機顔料または弁柄等の無機顔料、青色顔料としてはフタロシアニンブルー等の有機顔料またはコバルトブルー等の無機顔料、黒色顔料としてはアニリンブラック等の有機顔料、白色顔料としては二酸化チタン等の無機顔料が使用できる。
一実施形態において、ディスプレイとして、例えば、液晶ディスプレイ、有機ELディスプレイ、プラズマディスプレイなどが挙げられる。たとえば、本発明の加飾成形体を、タッチパネル、ディスプレイ部に配置する場合は、タッチパネル、ディスプレイ部の表示面に、基層の光干渉層とは反対側の面が積層される。
ベース塗膜形成組成物の調製
光重合開始剤としてイルガキュア184(IGM Resins社製)を7重量部、紫外線硬化型樹脂としてアロニックスM−305(東亜合成社製)を100重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が35%となるように調整し、ベース塗膜形成組成物を調製した。なお、塗膜形成後の屈折率は1.51であった。
中屈折率層形成組成物の調製
光重合開始剤としてイルガキュア127(IGM)を0.18重量部、紫外線硬化型樹脂としてアロニックスM−402(東亜合成)を2.65重量部、屈折率調整用の金属酸化物微粒子としてZR−010(ソーラー)を6.58重量部、溶媒として、ジアセトンアルコール(DAA)を90重量部用い、中屈折率層形成組成物を調整した。なお、塗膜形成後の屈折率は1.59であった。
高屈折率層形成組成物の調製
光重合開始剤としてイルガキュア127(IGM)を0.17重量部、紫外線硬化型樹脂としてアロニックスM−402(東亜合成)を0.72重量部、屈折率調整用の金属酸化物微粒子としてZR−010(ソーラー)を12.43重量部、溶媒として、ジアセトンアルコール(DAA)を90重量部用い、高屈折率層形成組成物を調整した。なお、塗膜形成後の屈折率は1.76であった。
基層1の製造
厚さ2.0mmである、PMMA(ポリメチルメタクリレート)およびPC(ポリカーボネート)からなる3層(PMMA/PC/PMMA)シート(商品名:MT3LTR、クラレ株式会社製)の一方の面に、ベース塗膜形成組成物をバーコーターにより乾燥膜厚が3.5μmになるよう塗布し、65℃で4分間乾燥させて溶媒を揮発させ、ハードコーティング組成物側から、積算光量250mJ/cm2の紫外線照射処理により硬化させ、ベース層を形成した(屈折率1.51)。
次いで、ベース層上に、中屈折率層形成組成物をバーコーターにより乾燥膜厚が80nmになるよう塗布し、65℃で4分間乾燥させて溶媒を揮発させ、中屈折率層形成組成物側から、積算光量250mJ/cm2の紫外線照射処理により硬化させ、中屈折率層を形成した(屈折率1.59)。
更に、中屈折率層上に、高屈折率層形成組成物をバーコーターにより乾燥膜厚が60nmになるよう塗布し、65℃で4分間乾燥させて溶媒を揮発させ、高屈折率層形成組成物側から、積算光量250mJ/cm2の紫外線照射処理により硬化させ、高屈折率層を形成した(屈折率1.76)。
このようにして、基層1を製造した。
得られた基層の高屈折率層とは反対側の面に、スクリーン印刷を用いて、HF−HSDコンク710ブラック(セイコーアドバンス社製)により全面黒色の印刷を実施した。この試験片について、JIS Z8781−4、JIS Z8781−5等に記載の方法に従い、日本電色工業製(品番SD3000)の装置を用い、基層における色相のL値、a値及びb値であるL(i)、a(i)及びb(i)を測定した。結果を表1に示す。その他の評価項目については、後述する実施例1に記載の各種評価基準と同様にして評価を行った。
基層2の製造
厚さ2.0mmである、PMMA(ポリメチルメタクリレート)およびPC(ポリカーボネート)からなる3層(PMMA/PC/PMMA)シート(商品名:MT3LTR、クラレ株式会社製)の一方の面に、ベース塗膜形成組成物をバーコーターにより乾燥膜厚が3.5μmになるよう塗布し、65℃で4分間乾燥させて溶媒を揮発させ、ハードコーティング組成物側から、積算光量250mJ/cm2の紫外線照射処理により硬化させ、ベース層を形成した(屈折率1.51)。
このようにして、基層2を製造した。
光干渉層形成組成物1の調製
光重合開始剤としてイルガキュア127(IGM)を0.63重量部、光重合開始剤としてアロニックスM−402(東亜合成)を7.46重量部、屈折率調整用の微粒子として、スルーリア4320(日揮触媒化成社製)を33.72重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が30%となるように調整し、光干渉層形成組成物1を調製した。
得られた基層の、高屈折率層を形成した面に、調製例B1で得られた光干渉層形成組成物1を、インクジェット装置を用い、乾燥後の光干渉層の最大厚さtmが76nmとなるよう塗装した。65℃で4分間乾燥させて溶媒を揮発させ、光干渉層形成組成物側から、積算光量250mJ/cm2の紫外線照射処理により硬化させ、光干渉層を形成した。
このようにして、基層と、光干渉層形成組成物から形成された光干渉層とを有するコーティング部材を形成した。
試験サンプルを10mm×10mmに切り出し、ミクロトーム(LEICA RM2265)にて光干渉層の断面を析出させた。析出させた断面をFE−SEM(S−4800 日立ハイテクノロジー製)にて観察し、10点の光干渉層の厚みを測定し、その最大値及び最小値の平均値を算出することにより、最小厚さ(tmin)と、最大厚さ(tmax)とを算出した。
各層に関する屈折率は、JIS K0062に準拠した方法により、アッベ屈折率計によって測定した。なお、光干渉層の屈折率は、コーティング部材の形態で測定した。
実施例1で得たコーティング部材の光干渉層とは反対側の面に、スクリーン印刷を用いて、HF−HSDコンク710ブラック(セイコーアドバンス社製)により全面黒色の印刷を実施した。この試験片について、JIS Z8781−4、JIS Z8781−5等に記載の方法に従い、日本電色工業製(品番SD3000)を用い、色相L76(ii)、a76(ii)及びb76(ii)を測定した。
得られた数値に基づき、「L(i)−L76(ii)」、「a(i)−a76(ii)」及び「b(i)−b76(ii)」を算出した。結果を表1に示す。
ここで、参考例1で測定したL値、a値及びb値を、それぞれ、L(i)、a(i)及びb(i)とした。
色差ΔEは、JIS Z8730:2009に準拠して導いた。上述のようにして得られた基層における色相L(i)、a(i)及びb(i)を測定し、同様に、光干渉層の厚さ76nmにおける領域の色相L76(ii)、a76(ii)及びb76(ii)の値から算出した。
結果を表1に示す。
150×250mmの基層上に、インクジェット装置を用い、調製例B1で調製した光干渉層形成組成物1を50mm角の正方形を3か所にパターニング塗布した。塗布面について、以下の評価基準に従い評価を行った。
(評価基準)
○:49mm角の正方形~51mm角の正方形に塗布面が収まっている。
Δ:48mm角~49mm角未満の正方形、または51mm角超~52mm角の正方形に塗布面が収まっている。
×:48mm角の正方形~52mm角の正方形に塗布面が収まっていない。
150×250mmの基層上に、インクジェット装置を用い、調製例B1で調製した光干渉層形成組成物1を50mm角の正方形を3か所にパターニング塗布した。印刷した塗布面の色相3ヶ所に対し、その色差(ΔE)の最大値を測定した。この色差(ΔE)の最大値を以下の基準に従い評価した。
(評価基準)
○:1以下
Δ:1超、1.5以下
×:1.5超
実施例1で得られたコーティング部材における、光干渉層について、硬度の評価を行った。測定は、JIS K5600−5−4(1999)、ひっかき硬度(鉛筆法)に従って鉛筆硬度を測定した。
参考例1で作成した基層については、高屈折率層(屈折率1.76)側における波長380~780nmの光線反射率の測定を行った。結果を図1Aに示す。
実施例1で得られたコーティング部材における、光干渉層について、波長380~780nmの光線反射率の測定を行った。具体的には、光干渉層の厚さ76nmの領域を、分光色彩計(日本電色工業製SD3000)を用い、5nm毎に、反射する光線の強度(反射率を測定した。結果を図1Bに示す。
ここで、各図において「光学干渉」と示される曲線が、光干渉層に関する測定結果である。また、「通常」と示される曲線は、参考として、基材とベース層を有する塗装物に関する反射率である。
光干渉層の最大厚さを変化させたこと以外は、実施例1と同様にしてコーティング部材を形成した。また、実施例1と同様にして、各種評価を行った。結果を表1及び図2~図9に示す。
(調製例B2)
光干渉層形成組成物2の調製
光重合開始剤としてイルガキュア127(IGM)を0.63重量部、光重合開始剤としてアロニックスM−402(東亜合成)を7.46重量部、屈折率調整用の微粒子として、スルーリア4320(日揮触媒)を39.46重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が30%となるように調整し、光干渉層形成組成物2を調製した。
(調製例B3)
光干渉層形成組成物3の調製
光重合開始剤としてイルガキュア127(IGM)を0.63重量部、光重合開始剤としてアロニックスM−402(東亜合成)を7.46重量部、屈折率調整用の微粒子として、スルーリア4320(日揮触媒)を6.42重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が30%となるように調整し、光干渉層形成組成物3を調製した。
(調製例B4)
光干渉層形成組成物4の調製
光重合開始剤としてイルガキュア127(IGM)を0.63重量部、光重合開始剤としてアロニックスM−402(東亜合成)を5.60重量部、及びアロニックスM−211B(東亜合成)を1.86重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が30%となるように調整し、光干渉層形成組成物4を調製した。
基層2を用い、光干渉層の厚さを120nmとしたこと以外は、実施例1と同様にしてコーティング部材を形成した。更に、実施例1と同様に各種物性等を評価した。実施例13に関する詳細な物性などを表2に示す。また、反射率に関する結果を図13に示す。
(調製例B5)
光干渉層形成組成物5の調製
光重合開始剤としてイルガキュア127(IGM)を0.63重量部、光重合開始剤としてアロニックスM−402(東亜合成)を6.93重量部、屈折率調整用の微粒子として、スルーリア4320(日揮触媒)を19.41重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が30%となるように調整し、光干渉層形成組成物5を調製した。
調製例B1で作成した光干渉層形成組成物1において、樹脂固形分100質量部に対し、900質量部の有機溶媒(PGM)が含まれるように光干渉層形成組成物を調整したこと以外は、実施例1と同様にしてコーティング部材を形成した。更に、実施例1と同様に各種物性等を評価した。実施例14に関する詳細な物性などを表2に示す。また、反射率に関する結果を図15に示す。
調製例B1で作成した光干渉層形成組成物1において、樹脂固形分100質量部に対し、8000質量部の有機溶媒(PGM)が含まれるように光干渉層形成組成物を調整したこと以外は、実施例1と同様にしてコーティング部材を形成した。更に、実施例1と同様に各種物性等を評価した。実施例14に関する詳細な物性などを表2に示す。また、反射率に関する結果を図16に示す。
(調製例B6)
光干渉層形成組成物6の調製
光重合開始剤としてイルガキュア127(IGM)を0.63重量部、光重合開始剤としてアロニックスM−402(東亜合成)を6.93重量部、フッ素系添加剤として、DAC−HP(ダイキン)を2.67重量部、屈折率調整用の微粒子として、スルーリア4320(日揮触媒)を33.72重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が30%となるように調整し、光干渉層形成組成物6を調製した。
(調製例B7)
光干渉層形成組成物7の調製
光重合開始剤としてイルガキュア127(IGM)を0.63重量部、光重合開始剤としてアロニックスM−402(東亜合成)を4.16重量部、シリコーン変性ウレタンアクリレートであるUN−906S(根上工業)を2.77重量部、フッ素系添加剤として、DAC−HP(ダイキン)を2.67重量部、屈折率調整用の微粒子として、スルーリア4320(日揮触媒)を33.72重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が30%となるように調整し、光干渉層形成組成物7を調製した。
比較例1~比較例3は、インクジェット塗装用の組成物である、調製例1で調製した本開示に係る光干渉層形成組成物を、インクジェット法以外の塗装方法を用いて塗装を行った比較例である。詳細な結果を表3に示す。この結果から理解できるように、インクジェット塗装用の組成物をその他の方法で塗装すると、反射特性及び意匠性に優れた塗膜を得ることができなかった。
比較例4は、光干渉層の膜厚が、本開示の範囲外である比較例である。詳細な結果を表3に示す。この結果から理解できるように、光干渉層が特定の膜厚を超過すると、塗膜の塗り分けを行うことができず、例えば、グラデーションなど、意匠性に優れた塗膜を形成できなかった。
(調製例8)
水酸基含有アクリル樹脂(1)の製造
攪拌機、温度制御装置、還流冷却器を備えた容器に、酢酸ブチル30gを仕込み、120℃に昇温させた。次に下記組成の単量体混合物(スチレン20部、アクリル酸n−ブチル15.3部、メタクリル酸−n−ブチル27.9部、メタクリル酸−2−ヒドロキシプロピル36部、アクリル酸0.8部)、そして、カヤエステルO 12部および酢酸ブチル6部を3時間かけて同時に滴下させた後30分間放置し、カヤエステルO 0.5部、酢酸ブチル4部の溶液を30分間かけて滴下し、反応溶液を1時間攪拌し樹脂への変化率を上昇させた後、反応を終了させ、固形分70%、数平均分子量3800、水酸基価140mg/KOH、酸価6.2mg/KOH、SP値10.6である、水酸基含有アクリル樹脂(1)を得た。
クリヤー塗料組成物の調製
上記調製例8の水酸基含有アクリル樹脂(1)を樹脂固形分で60.0部、メチルアミルケトン57.0部およびDBE(昭栄ケミカル社製)22.0部を順次添加し、ディスパーにて十分撹拌し、2液型クリヤー塗料組成物の主剤を得た。
別の金属製容器に、住友バイエルウレタン社製「ディスモジュールN−3300」(NCO有効成分22%)固形分で40.0部および2−エチルエトキシプロパノールを順次添加し、十分撹拌し、2液型クリヤー塗料組成物の硬化剤を得た。
光干渉層形成組成物8
上記クリヤー塗料組成物と、屈折率調整用の微粒子として、スルーリア4320(日揮触媒)を452.01重量部、溶媒としてプロピレングリコールモノメチルエーテル(PGM)を用い、固形分濃度が30%となるように調整し、光干渉層形成組成物8を調製した。実施例1と同様にして光干渉層を形成した。詳細な結果を表3に示す。
この結果、得られたコーティング部材は、十分な硬度を有することができなかった。
比較例8及び9は、基層の屈折率から光干渉層の屈折率を差し引いた値、(基層の屈折率−光干渉層の屈折率)が本開示の範囲外である比較例である。
また、基層2を用いたこと以外は、実施例1と同様に各種物性等を評価した。
結果を表3に示す。この結果、色調変化がなく意匠性が悪かった。
参考例2及び3は、インクジェット塗装での使用が想定されていない組成物であって、スクリーン印刷など、インクジェット法以外の方法を用いて光干渉層を形成し得る組成物を、インクジェット法で塗装し、塗膜の形成を試みた。例えば、参考例2は、粘度が極めて低く、インクジェット塗装を行ったところ、ムラの発生、仕上がり不良などが生じた。一方、参考例3は、粘度が高く、インクジェット法により、600nm以下の厚さを有する塗膜の形成ができなかった。
その上、高い塗り分け性を有しており、デザインの選択性に富むコーティング部材であることが判る。加えて、ムラの無い又は極めて少ないコーティング部材であり、その上、良好な塗膜硬度を有している。
Claims (10)
- 基層と、光干渉層形成組成物から形成された光干渉層とを有するコーティング部材であって、
前記基層の視認側の面における一部に、前記光干渉層が配置され、
前記光干渉層は、0nmより大きく600nm以下の範囲内であり、
0.08<(前記基層の屈折率)−(前記光干渉層の屈折率)<0.45の関係を有し、
前記光干渉層形成組成物は、インクジェット塗装用の組成物であり、
前記光干渉層は、インクジェット法により形成された光干渉層である、
コーティング部材。 - 基層と、光干渉層形成組成物から形成された光干渉層とを有するコーティング部材であって、
前記基層の視認側の面における少なくとも一部に、前記光干渉層が配置され、
前記光干渉層は、0nmより大きく600nm以下の範囲内で、
最小厚さ(tmin)と、最大厚さ(tmax)とを有し、更に、
前記最小厚さ(tmin)<最大厚さ(tmax)の関係を有し、
0.08<(前記基層の屈折率)−(前記光干渉層の屈折率)<0.45の関係を有し、
前記光干渉層形成組成物は、インクジェット塗装用の組成物であり、
前記光干渉層は、インクジェット法により形成された光干渉層である、
コーティング部材。 - 前記基層における色相のL値、a値及びb値を、L(i)、a(i)及びb(i)とし、
前記光干渉層の厚さt(nm)における色相のL値、a値及びb値を、Lt(ii)、at(ii)及びbt(ii)とし、
ここで、tは0nmより大きく600nm以下であり、
前記基層におけるL(i)、a(i)及びb(i)と、
前記光干渉層における、前記厚さt(nm)でのLt(ii)、at(ii)及びbt(ii)とが、以下の式(1)~式(3)の少なくとも1つを満たす、
請求項1又は2に記載のコーティング部材;
0<L(i)−Lt(ii)<35 式(1)
−30<a(i)−at(ii)<30 式(2)
−40<b(i)−bt(ii)<40 式(3)。 - 前記基層における色相のL値、a値及びb値を、L(i)、a(i)及びb(i)とし、
前記光干渉層における、厚さt(nm)での色相のL値、a値及びb値を、Lt(ii)、at(ii)及びbt(ii)とし、
ここで、tは0nmより大きく600nm以下であり、
前記基層における色相と、前記光干渉層における、厚さt(nm)での色相の差ΔEが
1<ΔE<50
の関係を示す、請求項1から3のいずれか1項に記載のコーティング部材。 - 前記光干渉層形成組成物は、樹脂固形分100質量部に対し、300質量部以上9900質量部の有機溶媒を含む、請求項1から4のいずれか1項に記載のコーティング部材。
- 前記光干渉層形成組成物は、光干渉層形成樹脂成分を含み、
前記光干渉層形成樹脂成分は、不飽和二重結合を有し、活性エネルギー線硬化型の樹脂成分である、請求項1から5のいずれかに記載のコーティング部材。 - 前記光干渉層形成組成物は、多官能アクリレート及びフッ素樹脂を含む、請求項1から6のいずれか1項に記載のコーティング部材。
- 前記光干渉層形成組成物は、多官能アクリレート、シリコーン変性アクリレート及びフッ素樹脂を含む、請求項1から7のいずれか1項に記載のコーティング部材。
- 車両の室内に用いる加飾用部材である、請求項1から8のいずれか1項に記載のコーティング部材。
- 請求項1から9のいずれか1項に記載のコーティング部材の製造方法であって、
前記基層の視認側の面における少なくとも一部に、前記光干渉層形成組成物をインクジェット法により塗装すること、及び
活性エネルギー線を照射し、前記光干渉層を形成すること、
を含むコーティング部材の製造方法。
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| Publication number | Publication date |
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| CN114144701B (zh) | 2024-08-23 |
| EP3974068B1 (en) | 2025-09-10 |
| TWI869404B (zh) | 2025-01-11 |
| TW202104465A (zh) | 2021-02-01 |
| JP7433779B2 (ja) | 2024-02-20 |
| US20220252762A1 (en) | 2022-08-11 |
| CN114144701A (zh) | 2022-03-04 |
| KR20220008889A (ko) | 2022-01-21 |
| EP3974068A1 (en) | 2022-03-30 |
| JP2020190624A (ja) | 2020-11-26 |
| EP3974068A4 (en) | 2023-06-14 |
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