WO2018088543A1 - ポリイミドフィルムとハードコート層とを含む積層体 - Google Patents
ポリイミドフィルムとハードコート層とを含む積層体 Download PDFInfo
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- WO2018088543A1 WO2018088543A1 PCT/JP2017/040650 JP2017040650W WO2018088543A1 WO 2018088543 A1 WO2018088543 A1 WO 2018088543A1 JP 2017040650 W JP2017040650 W JP 2017040650W WO 2018088543 A1 WO2018088543 A1 WO 2018088543A1
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- WIPO (PCT)
- Prior art keywords
- repeating unit
- polyimide
- polyimide film
- chemical formula
- hard coat
- Prior art date
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Classifications
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
-
- 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
- B05D7/02—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 to macromolecular substances, e.g. rubber
- B05D7/04—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 to macromolecular substances, e.g. rubber to surfaces of films or sheets
-
- 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
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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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
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/208—Touch screens
Definitions
- the present invention relates to a laminate including a film containing polyimide (polyimide film) and a hard coat layer formed on the polyimide film, and having a hard surface with high hardness.
- Polyimide films have been widely used in the fields of electric / electronic devices and semiconductors because they are excellent in heat resistance, chemical resistance, mechanical strength, electrical properties, dimensional stability, and the like.
- development of optical materials such as a liquid crystal alignment film and a protective film for a color filter in the display device field, such as an optical fiber and an optical waveguide in the optical communication field, is progressing.
- a plastic substrate that is lightweight and excellent in flexibility as a substitute for a glass substrate has been studied, and a display that can be bent and rolled has been actively developed.
- a plastic cover sheet or cover film has been studied as an alternative to a cover glass that protects the display surface. For this reason, there is a demand for higher performance optical materials that can be used for such applications.
- Aromatic polyimide is essentially yellowish brown due to intramolecular conjugation and the formation of charge transfer complexes. For this reason, as a means to suppress coloration, for example, introduction of fluorine atoms into the molecule, imparting flexibility to the main chain, introduction of bulky groups as side chains, etc. inhibits intramolecular conjugation and charge transfer complex formation. Thus, a method for expressing transparency has been proposed.
- a method of expressing transparency by using a semi-alicyclic or fully alicyclic polyimide that does not form a charge transfer complex in principle has also been proposed.
- Many semi-alicyclic polyimides that use aromatic diamines as anhydride and diamine components and have high transparency have been proposed.
- Patent Document 1 discloses that 2,2′- as a diamine-derived structure as a polyimide precursor capable of producing a polyimide film that is colorless and transparent, has a low coefficient of linear expansion, and is excellent in elongation.
- Structure derived from bis (trifluoromethyl) benzidine (TFMB) and acid dianhydride derived structure derived from pyromellitic dianhydride (PMDA) and 4,4′-oxydiphthalic dianhydride (ODPA) A structure and a structure derived from 1,2,3,4-cyclobutanetetracarboxylic dianhydride (CBDA) and / or 1,2,4,5-cyclohexanetetracarboxylic dianhydride (H-PMDA);
- TFMB bis (trifluoromethyl) benzidine
- PMDA pyromellitic dianhydride
- ODPA 4,4′-oxydiphthalic dianhydride
- CBDA 1,2,3,4-cyclobutanetetracar
- Patent Document 2 discloses 1,2,3,4-cyclobutanetetracarboxylic dianhydride as a tetracarboxylic acid component, 2,2′-bis (trifluoromethyl) benzidine as a diamine component, and a specific imide group-containing diamine. More polymerized poly (amide acid-imide) copolymers are disclosed.
- Patent Document 3 uses 1,2,3,4-cyclobutanetetracarboxylic dianhydride as a tetracarboxylic acid component, and diamine.
- Disclosed is a polyimide obtained by heating a polyimide precursor composition containing a polyimide precursor using an aromatic diamine such as' -oxydianiline, and an imidazole compound and / or a trialkylamine compound. .
- Patent Document 3 further discloses 1,2,3,4-cyclobutanetetracarboxylic dianhydride and norbornane-2-spiro- ⁇ -cyclopentanone- ⁇ ′-spiro-2 ′′ as tetracarboxylic acid components. Also disclosed is a polyimide using norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic dianhydride and 2,2′-dimethyl-4,4′-diaminobiphenyl as a diamine component. Yes.
- Patent Document 4 also discloses 1,2,3,4-cyclobutanetetracarboxylic dianhydride and norbornane-2-spiro- ⁇ -cyclopentanone- ⁇ ′-spiro-2 ′′ as tetracarboxylic acid components.
- Aromatic diamines such as dimethyl-4,4′-diaminobiphenyl and 2,2′-bis (trifluoromethyl) benzidine, 1,4-bis (4-aminophenoxy) benzene, 4,4′-oxydianiline, etc.
- the polyimide used is disclosed.
- Polyimide films are used in various applications. Depending on the application, for example, when used for a cover sheet or a cover film for protecting a display surface, the polyimide film is used to improve the scratch resistance of the surface. A hard coat layer is provided on top.
- Patent Document 5 1,2,4,5-cyclohexanetetracarboxylic dianhydride is used as a tetracarboxylic acid component, and 2,2′-dimethylbenzidine (2,2′-dimethyl) is used as a diamine component.
- a hard coat layer is formed on the surface of a polyimide film composed of a polyimide resin composition containing a polyimide resin using -4,4'-diaminobiphenyl) and 2,2'-bis (trifluoromethyl) benzidine and silica fine particles.
- a hard coat laminated film formed is disclosed.
- Example 5 of Patent Document 5 also describes a hard coat laminated film in which a hard coat layer is formed on the surface of a polyimide film made of the above polyimide resin to which silica fine particles are not added.
- a hard coat layer is provided on the polyimide film, but this hard coat layer is required to have higher hardness for the purpose of formation.
- polyimide is excellent in heat resistance and chemical resistance, but often has insufficient adhesion and adhesion to other layers, and a hard coat layer may be provided directly on the surface of the polyimide film. There are cases where it is not possible. Furthermore, even when the hard coat layer can be formed directly on the surface of the polyimide film, the hardness of the hard coat layer surface may be insufficient.
- an object of the present invention is to provide a laminate including a polyimide film and a hard coat layer formed directly on the surface of the polyimide film, and having a high hardness on the surface of the hard coat layer.
- the present invention also provides a laminate comprising a polyimide film and a hard coat layer formed directly on the surface of the polyimide film, the hard coat layer surface having high hardness and excellent transparency. Also aimed.
- a laminate including a polyimide-containing film and a hard coat layer The polyimide is The total content of repeating units represented by the following general formula (1) is more than 90 mol% with respect to all repeating units, and The total content of the repeating unit represented by the following chemical formula (2-1) and / or the repeating unit represented by the following chemical formula (2-2) is 50 mol% or more based on the total repeating units.
- a featured laminate A featured laminate.
- A is an aromatic ring, a 4-membered ring or a 6-membered ring (which may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to form a crosslinked structure).
- a tetravalent group containing a ring structure, and B is a divalent group containing an aromatic ring or an alicyclic structure, provided that A and B contained in each repeating unit are the same or different. May be.
- the total content of the repeating unit represented by the chemical formula (2-1) and / or the repeating unit represented by the chemical formula (2-2) is 60 mol% or more based on the total repeating units.
- Item 2 The laminate according to Item 1, wherein the polyimide has a content of repeating units represented by the chemical formula (2-1) of 50 mol% or more based on all repeating units.
- the polyimide is Consisting of the repeating unit represented by the chemical formula (2-1) and / or the repeating unit represented by the chemical formula (2-2), or The repeating unit represented by the chemical formula (2-1) and / or the repeating unit represented by the chemical formula (2-2), and A is a 4-membered ring or a 6-membered ring (carbon atoms constituting a 6-membered ring)
- A is a 4-membered ring or a 6-membered ring (carbon atoms constituting a 6-membered ring)
- A is a 4-membered ring or a 6-membered ring (carbon atoms constituting a 6-membered ring)
- B is a divalent group containing an aromatic ring.
- the polyimide is A repeating unit represented by the chemical formula (2-1) and / or a repeating unit represented by the chemical formula (2-2); 4 includes an alicyclic structure in which A is an aromatic ring, or a 4-membered ring or a 6-membered ring (may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to each other to form a crosslinked structure). And a repeating unit represented by the general formula (1), wherein B is a divalent group including a structure in which two aromatic rings are connected by an ether bond (—O—).
- Item 4 The laminate according to any one of Items 1 to 3, wherein:
- the polyimide is A is a tetravalent group containing an alicyclic structure of a 4-membered ring or a 6-membered ring (may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to form a crosslinked structure)
- B is a divalent group represented by the following chemical formula (B-1), a divalent group represented by the following chemical formula (B-2), or two aromatic rings are ether bonds (—O—) It consists of one or more repeating units represented by the general formula (1), which is a divalent group containing a linked structure, However, the total content of the repeating unit represented by the chemical formula (2-1) and / or the repeating unit represented by the chemical formula (2-2) is 50 mol% or more based on the total repeating units.
- Item 6 The laminate according to Item 5 above.
- Item 7 The laminate according to any one of Items 1 to 6, wherein the surface of the hard coat layer has a pencil hardness of 2H or more.
- the total content of the repeating units represented by the following general formula (1) exceeds 90 mol% with respect to all repeating units, and the repeating units represented by the following chemical formula (2-1) and / or A curable resin composition containing at least a curable resin component on a film containing polyimide having a total content of repeating units represented by the chemical formula (2-2) of 50 mol% or more based on all repeating units. Applying an object, And a step of curing the coating film of the curable resin composition to form a hard coat layer.
- A is an aromatic ring, a 4-membered ring or a 6-membered ring (which may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to form a crosslinked structure).
- a tetravalent group containing a ring structure, and B is a divalent group containing an aromatic ring or an alicyclic structure, provided that A and B contained in each repeating unit are the same or different. May be.
- a cover sheet or a cover film for a display surface comprising the laminate according to any one of items 1 to 8.
- An optical member, a display member, a touch panel member, or a touch sensor member comprising the laminate according to any one of items 1 to 8.
- a laminate including a polyimide film and a hard coat layer and having a high hardness on the hard coat layer surface can be provided. Further, according to one embodiment of the present invention, it is possible to provide a laminate including a polyimide film and a hard coat layer directly formed on the surface of the polyimide film, and having a high hardness on the surface of the hard coat layer.
- a laminate including a polyimide film and a hard coat layer having a high hardness on the surface of the hard coat layer, and excellent transparency.
- a laminate including a polyimide film and a hard coat layer directly formed on the surface of the polyimide film, the hard coat layer surface having high hardness and excellent transparency For example, the cover sheet or cover film that protects the display display surface needs high transparency, but according to one embodiment of the present invention, the cover sheet or cover film (protective film) for the display display surface is suitable.
- a polyimide film / hard coat layer laminate that can be used can be provided.
- the laminated body of this invention can be used suitably for an optical member, a display member, a touch panel member, or a touch sensor member, for example.
- the laminate of the present invention has a film containing polyimide (polyimide film) and a hard coat layer formed thereon.
- the hard coat layer may be provided directly on the surface of the polyimide film or may be provided via another layer such as a primer layer.
- the hard coat layer may be formed only on one side of the polyimide film or may be formed on both sides depending on the application. Further, the hard coat layer may be formed on the entire surface of one side or both sides of the polyimide film, or may be formed only on a part of the surface.
- the laminate of the present invention includes a polyimide film or a hard coat layer on which another layer is formed or laminated, and after the semi-finished product is manufactured using the polyimide film, the polyimide film In addition, a hard coat layer formed thereon is also included.
- the laminate of the present invention is a product (part, partway in production) such as an electronic product, an optical product, or a display product. (Including semi-finished products).
- the polyimide film used in the present invention is a film containing polyimide, and if necessary, such as filler (inorganic particles such as silica and organic particles), antioxidant, ultraviolet absorber, dye, pigment, silane coupling agent, etc. Coupling agents, primers, flame retardants, leveling agents, release agents, and other additives commonly used in polyimide films can be contained.
- the polyimide film of the present invention contains inorganic particles such as silica and organic particles (fillers) from the viewpoint of film strength and film surface smoothness, or from the viewpoint of ease of production and cost. Preferably not.
- the polyimide constituting the polyimide film used in the present invention has a total content of repeating units represented by the following general formula (1) of more than 90 mol% with respect to all repeating units, and has the following chemical formula (2- It is a polyimide in which the total content of the repeating unit represented by 1) and / or the repeating unit represented by the following chemical formula (2-2) is 50 mol% or more based on all repeating units.
- the repeating unit represented by the following general formula (1) includes a repeating unit represented by the following chemical formula (2-1) and a repeating unit represented by the following chemical formula (2-2).
- A is an aromatic ring, a 4-membered ring or a 6-membered ring (which may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to form a crosslinked structure).
- a tetravalent group containing a ring structure, and B is a divalent group containing an aromatic ring or an alicyclic structure, provided that A and B contained in each repeating unit are the same or different. May be.
- the total content of the repeating unit represented by the general formula (1) is More than 90 mol% and more preferably 95 to 100 mol% and more preferably 98 to 100 mol% with respect to the repeating unit.
- the total content of the repeating unit represented by the general formula (1) is 100 mol%, that is, the polyimide used in the present invention is the repeating unit represented by the general formula (1). It is particularly preferred that
- the total content of the repeating unit represented by the chemical formula (2-1) and / or the repeating unit represented by the chemical formula (2-2) is 50 mol% or more with respect to all the repeating units. More preferably, it is 60 mol% or more. In one embodiment, the total content of the repeating unit represented by the chemical formula (2-1) and / or the repeating unit represented by the chemical formula (2-2) is 70 mol with respect to all the repeating units. % Or more, more preferably 80 mol% or more, and particularly preferably 85 mol% or more.
- the polyimide contains a repeating unit represented by the chemical formula (2-1), and the content of the repeating unit represented by the chemical formula (2-1) is all repeating units. It may be preferable that it is 50 mol% or more.
- a laminate using a polyimide film in which the content of the repeating unit represented by the chemical formula (2-1) is 50 mol% or more based on the total repeating units is represented by the chemical formula (2-2).
- the repeating unit is contained and does not contain the repeating unit represented by the chemical formula (2-1), or the content of the repeating unit represented by the chemical formula (2-1) is 50 mol% with respect to all the repeating units.
- the hardness of the surface of the hard coat layer may be higher than that of a laminate using a polyimide film that is less than
- a in the general formula (1) may be an aromatic ring, a 4-membered ring or a 6-membered ring (carbon atoms constituting the 6-membered ring are bonded to form a crosslinked structure).
- A is a 4-membered ring or a 6-membered ring. It is preferably a tetravalent group containing an alicyclic structure of a ring (which may be a crosslinked ring in which carbon atoms constituting a 6-membered ring are bonded to form a crosslinked structure).
- examples of the alicyclic structure of a 6-membered ring include the following. .
- one or two carbon atoms of the 6-membered ring are shared with another ring (which may be a 6-membered ring or a ring other than the 6-membered ring). May be.
- the tetravalent group containing a 4-membered alicyclic structure of A in the general formula (1) for example, the following are preferable.
- the tetravalent group of the formula (A-1) corresponds to A in the repeating unit represented by the chemical formula (2-1) and the repeating unit represented by the chemical formula (2-2).
- a tetravalent group containing an alicyclic structure of the 6-membered ring of A in the general formula (1) (which may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to form a crosslinked structure)
- the following are preferable.
- the tetravalent group containing the aromatic ring of A in the general formula (1) for example, the following are preferable.
- Z 1 is a direct bond or a hexafluoroisopropylidene bond.
- a in the general formula (1) that is, the tetracarboxylic acid component is not limited to those described above, and can be appropriately selected according to required characteristics and applications.
- the tetracarboxylic acid component giving the repeating unit of the general formula (1) is not particularly limited, and examples thereof include 2,2-bis (3,4-dicarboxyphenyl) hexafluoropropane, 4- (2 , 5-Dioxotetrahydrofuran-3-yl) -1,2,3,4-tetrahydronaphthalene-1,2-dicarboxylic acid, pyromellitic acid, 3,3 ′, 4,4′-benzophenone tetracarboxylic acid, 3, , 3 ′, 4,4′-biphenyltetracarboxylic acid, 2,3,3 ′, 4′-biphenyltetracarboxylic acid, 4,4′-oxydiphthalic acid, 3,3 ′, 4,4′-diphenylsulfonetetra Carboxylic acid, m-terphenyl-3,4,3 ′, 4′-tetracarboxylic acid, p-terphenyl-3
- a tetracarboxylic acid component may be used individually by 1 type, and can also be used in combination of multiple types.
- 1,2,3,4-cyclobutanetetracarboxylic acids and the like are tetracarboxylic acid, tetracarboxylic dianhydride, tetracarboxylic acid silyl ester, tetracarboxylic acid ester, Tetracarboxylic acid derivative such as tetracarboxylic acid chloride
- tetracarboxylic acids and the like are tetracarboxylic acid, tetracarboxylic dianhydride, tetracarboxylic acid silyl ester, tetracarboxylic acid ester, Tetracarboxylic acid derivative such as tetracarboxylic acid chloride
- tetracarboxylic acid component that provides the repeating unit represented by the chemical formula (2-1) and the repeating unit represented by the chemical formula (2-2). is there.
- B in the general formula (1) is a divalent group containing an aromatic ring or an alicyclic structure.
- a in the general formula (1) is a 4-membered ring or a 6-membered ring (which may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to form a crosslinked structure).
- B is preferably a divalent group containing an aromatic ring.
- the divalent groups of the formula (B-1) and the formula (B-2) are represented by B in the repeating unit represented by the chemical formula (2-1) and the repeating unit represented by the chemical formula (2-2). It corresponds to.
- the divalent group containing an aromatic ring represented by B in the general formula (1) is a divalent group containing a structure in which two aromatic rings are connected by an ether bond (—O—) (an ether bond-containing aromatic group). Group) is also preferred.
- the ether group-containing aromatic group may contain at least one ether bond, and when it contains three or more aromatic rings, the two aromatic rings are connected by a bond other than an ether bond such as a direct bond.
- the structure may also be included.
- the aromatic ring may be substituted with a substituent such as a methyl group, a trifluoromethyl group, or a phenyl group. The substitution position is not particularly limited.
- the aromatic ring contained in the ether bond-containing aromatic group is preferably a benzene ring. In some embodiments, it may be preferred to be a substituted or unsubstituted phenylene group, more preferably an unsubstituted phenylene group.
- the number of aromatic rings contained in the ether bond-containing aromatic group is preferably 6 or less, and more preferably 4 or less. In one embodiment, it may be preferable that the number of aromatic rings contained in the ether bond-containing aromatic group is 3 or less.
- the ether bond-containing aromatic group may include a structure in which two aromatic rings are connected by a bond other than an ether bond, but usually all aromatic rings are connected by an ether bond. Is preferred.
- the connecting position of the aromatic rings is not particularly limited, but it is usually preferable to bond at the 3-position or 4-position with respect to the amide group (—CONH—) bonded to A or the connecting group of the aromatic rings. In some embodiments, it may be preferable to bond at the 4-position with respect to an amide group (—CONH—) bonded to A or a linking group between aromatic rings.
- ether bond-containing aromatic group for example, the following are preferable.
- n 1 represents an integer of 1 to 3
- X 1 and X 2 each independently represents one selected from the group consisting of a hydrogen atom, a methyl group, a trifluoromethyl group, and a phenyl group. .
- n 2 represents an integer of 1 to 3
- Examples of the divalent group containing the aromatic ring of B in the general formula (1) include the following.
- the group represented by the following formula (B-4) includes the groups of the above formula (B-1) and the above formula (B-2), but the following formula (B-4) is shown as another example. .
- Y 1 , Y 2 , and Y 3 are each independently a hydrogen atom, a methyl group, or a trifluoromethyl group.
- Q 1 and Q 2 are each independently a direct bond or a group represented by the formula: —NHCO—, —CONH—, —COO—, —OCO—. Represents one selected from the group consisting of:
- the connecting position of the aromatic rings is not particularly limited, but the 4-position with respect to the amide group (—CONH—) bonded to A or the connecting group of the aromatic rings. It may be preferred to bond with.
- the group represented by the formula (B-4) has one aromatic ring (when m 1 and m 2 are 0), the p-phenylene group which may have a substituent (Y 1 ) It may be preferable.
- the aromatic ring may be substituted with a methyl group, a trifluoromethyl group, or a carboxyl group, but the substitution position is not particularly limited.
- Divalent group of formula (B-4) [excluding the divalent groups of formula (B-1) and formula (B-2). For example, the following are preferable.
- a divalent group including the alicyclic structure of B in the general formula (1) a divalent group including a 6-membered alicyclic structure is preferable.
- the following are preferable.
- B of General formula (1) ie, a diamine component, is not limited to the above-mentioned thing, It can select suitably according to the calculated
- the diamine component giving the repeating unit of the general formula (1) is not particularly limited, and examples thereof include 2,2′-dimethyl-4,4′-diaminobiphenyl (m-tolidine), p-phenylenediamine. , M-phenylenediamine, benzidine, 3,3′-diamino-biphenyl, 2,2′-bis (trifluoromethyl) benzidine, 3,3′-bis (trifluoromethyl) benzidine, 4,4′-diaminobenz Anilide, 3,4'-diaminobenzanilide, N, N'-bis (4-aminophenyl) terephthalamide, N, N'-p-phenylenebis (p-aminobenzamide), 4-aminophenoxy-4-diamino Benzoate, bis (4-aminophenyl) terephthalate, biphenyl-4,4'-dicarboxylic acid bis (4-a Nophenyl) ester,
- a diamine component may be used individually by 1 type, and can also be used in combination of multiple types.
- 2,2′-dimethyl-4,4′-diaminobiphenyl is a diamine component that gives a repeating unit represented by the chemical formula (2-1)
- 2,2′-bis (tri Fluoromethyl) benzidine is a diamine component that gives a repeating unit represented by the chemical formula (2-2).
- the repeating unit represented by the general formula (1) includes the repeating unit represented by the chemical formula (2-1) and the repeating unit represented by the chemical formula (2-2). .
- the repeating unit represented by the chemical formula (2-1) the general unit in which A is a tetravalent group of the chemical formula (A-1) and B is a divalent group of the chemical formula (B-1).
- the repeating unit represented by the chemical formula (2-2) is such that A is a tetravalent group of the chemical formula (A-1) and B is the chemical formula ( B-2) is a repeating unit represented by the general formula (1) which is a divalent group.
- the polyimide constituting the polyimide film used in the present invention includes 1,2,3,4-cyclobutanetetracarboxylic acid as a tetracarboxylic acid component and 2,2′-dimethyl- as a diamine component.
- Polyimide obtained from 4,4′-diaminobiphenyl and / or 2,2′-bis (trifluoromethyl) benzidine, that is, the repeating unit represented by the chemical formula (2-1) and / or the chemical formula (2 -2) is preferably a polyimide composed of a repeating unit.
- the polyimide constituting the polyimide film used in the present invention is 1,2,3,4-cyclobutanetetracarboxylic acid or the like as a tetracarboxylic acid component, or 1,2,3,4- Cyclobutanetetracarboxylic acids, etc., and other alicyclic rings such as 4-membered or 6-membered rings (may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to each other to form a crosslinked structure)
- the diamine component includes diamines containing other aromatic rings other than 2,2′-dimethyl-4,4′-diaminobiphenyl and / or 2,2′-bis (trifluoromethyl) benzidine.
- the polyimide constituting the polyimide film is a fat in which A is a 4-membered ring or a 6-membered ring (may be a crosslinked ring in which carbon atoms constituting the 6-membered ring are bonded to form a crosslinked structure).
- a tetravalent group containing a ring structure wherein B is a divalent group represented by the chemical formula (B-1), a divalent group represented by the chemical formula (B-2), or two aromatics It is composed of one or more repeating units represented by the above general formula (1), which is a divalent group including a structure in which a ring is connected by an ether bond (—O—), provided that the chemical formula (2-1) A repeating unit represented by the general formula (1) wherein A is a tetravalent group of the chemical formula (A-1) and B is a divalent group of the chemical formula (B-1).
- Repeating unit] and / or repeating unit represented by the chemical formula (2-2) [A is the chemical formula (A- The total content of the repeating unit represented by the general formula (1) in which B is a divalent group of the chemical formula (B-2)] is 50 mol% or more is preferable.
- the polyimide constituting the polyimide film used in the present invention is represented by the repeating unit represented by the general formula (1) (the repeating unit represented by the chemical formula (2-1) and the chemical formula (2-2).
- One or more other repeating units other than (including repeating units) may be contained in a range of less than 10 mol%, preferably 5 mol% or less, more preferably 2 mol% or less of all repeating units.
- the tetracarboxylic acid component and diamine component that give other repeating units are not particularly limited, and any other known tetracarboxylic acids or known diamines can be used.
- tetracarboxylic acid components that give other repeating units include 2,2-bis (3,4-dicarboxyphenyl) hexafluoropropane, 4- (2,5-dioxotetrahydrofuran-3-yl) -1 , 2,3,4-Tetrahydronaphthalene-1,2-dicarboxylic acid, pyromellitic acid, 3,3 ′, 4,4′-benzophenone tetracarboxylic acid, 3,3 ′, 4,4′-biphenyltetracarboxylic acid 2,3,3 ′, 4′-biphenyltetracarboxylic acid, 4,4′-oxydiphthalic acid, 3,3 ′, 4,4′-diphenylsulfonetetracarboxylic acid, m-terphenyl-3,4,3 ', 4'-tetracarboxylic acid, p-terphenyl-3,4,3', 4'-tetracarboxylic
- the diamine component to be combined is not a diamine component that gives the repeating unit of the general formula (1)
- the tetracarboxylic acid component of the other repeating unit is exemplified as a tetracarboxylic acid component that gives the repeating unit of the general formula (1). It may be what you did.
- diamine component giving other repeating units examples include 2,2′-dimethyl-4,4′-diaminobiphenyl (m-tolidine), p-phenylenediamine, m-phenylenediamine, benzidine, 3,3′- Diamino-biphenyl, 2,2′-bis (trifluoromethyl) benzidine, 3,3′-bis (trifluoromethyl) benzidine, 4,4′-diaminobenzanilide, 3,4′-diaminobenzanilide, N, N′-bis (4-aminophenyl) terephthalamide, N, N′-p-phenylenebis (p-aminobenzamide), 4-aminophenoxy-4-diaminobenzoate, bis (4-aminophenyl) terephthalate, biphenyl- 4,4'-dicarboxylic acid bis (4-aminophenyl) ester, p-phenylenebis p-aminobenzoate
- the diamine component of the other repeating unit is exemplified as the diamine component that gives the repeating unit of the general formula (1). It may be what you did.
- the polyimide film can be manufactured, for example, as follows.
- the manufacturing method of the polyimide film of this invention is not limited to the following manufacturing methods.
- polyimide precursor composition a polyimide precursor solution
- Polyimide precursors are: 1) polyamic acid (also called polyamic acid), 2) polyamic acid ester (at least a part of H of the carboxyl group of the polyamic acid is an alkyl group), 3) 4) polyamic acid silyl ester (polyamide) At least a part of H of the carboxyl group of the acid can be classified as an alkylsilyl group.
- the polyimide precursor can be easily manufactured by the following manufacturing method for each classification.
- the polyimide precursor of the present invention comprises a tetracarboxylic dianhydride as a tetracarboxylic acid component and a diamine component in a solvent in an approximately equimolar amount, preferably a molar ratio of the diamine component to the tetracarboxylic acid component [diamine.
- the number of moles of the component / the number of moles of the tetracarboxylic acid component] is preferably 0.90 to 1.10, more preferably 0.95 to 1.05, for example, imidization at a relatively low temperature of 120 ° C. or less. It can obtain suitably as a polyimide precursor solution composition by reacting, suppressing.
- diamine is dissolved in an organic solvent, and tetracarboxylic dianhydride is gradually added to this solution while stirring, and 0 to 120 ° C., preferably 5 to 80 ° C.
- a polyimide precursor is obtained by stirring for 1 to 72 hours in the range of ° C.
- the order of addition of diamine and tetracarboxylic dianhydride in the above production method is preferable because the molecular weight of the polyimide precursor is likely to increase.
- the molar ratio of the tetracarboxylic acid component and the diamine component is an excess of the diamine component, if necessary, an amount of a carboxylic acid derivative substantially corresponding to the excess mole number of the diamine component is added, and the tetracarboxylic acid component and the diamine are added.
- the molar ratio of the components can be approximated to the equivalent.
- the carboxylic acid derivative herein, a tetracarboxylic acid that does not substantially increase the viscosity of the polyimide precursor solution, that is, substantially does not participate in molecular chain extension, or a tricarboxylic acid that functions as a terminal terminator and its anhydride, Dicarboxylic acid and its anhydride are preferred.
- a polyimide precursor can be easily obtained by dehydrating and condensing diester dicarboxylic acid and diamine using a phosphorus condensing agent or a carbodiimide condensing agent.
- silylating agent that does not contain chlorine as the silylating agent used here, because it is not necessary to purify the silylated diamine.
- the silylating agent not containing a chlorine atom include N, O-bis (trimethylsilyl) trifluoroacetamide, N, O-bis (trimethylsilyl) acetamide, and hexamethyldisilazane.
- N, O-bis (trimethylsilyl) acetamide and hexamethyldisilazane are particularly preferred because they do not contain fluorine atoms and are low in cost.
- an amine catalyst such as pyridine, piperidine or triethylamine can be used to accelerate the reaction.
- This catalyst can be used as it is as a polymerization catalyst for the polyimide precursor.
- a polyimide precursor is obtained by mixing the polyamic acid solution obtained by the method 1) and a silylating agent and stirring at 0 to 120 ° C., preferably 5 to 80 ° C. for 1 to 72 hours.
- the reaction is carried out at 80 ° C. or higher, the molecular weight varies depending on the temperature history at the time of polymerization, and imidization proceeds due to heat, so there is a possibility that the polyimide precursor cannot be produced stably.
- silylating agent used here it is preferable to use a silylating agent not containing chlorine because it is not necessary to purify the silylated polyamic acid or the obtained polyimide.
- examples of the silylating agent not containing a chlorine atom include N, O-bis (trimethylsilyl) trifluoroacetamide, N, O-bis (trimethylsilyl) acetamide, and hexamethyldisilazane.
- N, O-bis (trimethylsilyl) acetamide and hexamethyldisilazane are particularly preferred because they do not contain fluorine atoms and are low in cost.
- Solvents used in preparing the polyimide precursor include, for example, N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, dimethyl
- An aprotic solvent such as sulfoxide is preferable, and N, N-dimethylacetamide is particularly preferable.
- any type of solvent can be used without any problem as long as the raw material monomer component and the polyimide precursor to be generated are dissolved.
- the structure is not particularly limited.
- amide solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, ⁇ -butyrolactone, ⁇ -valerolactone, ⁇ -valerolactone, ⁇ -caprolactone, ⁇ -caprolactone , Cyclic ester solvents such as ⁇ -methyl- ⁇ -butyrolactone, carbonate solvents such as ethylene carbonate and propylene carbonate, glycol solvents such as triethylene glycol, m-cresol, p-cresol, 3-chlorophenol, 4-chlorophenol Phenol solvents such as acetophenone, 1,3-dimethyl-2-imidazolidinone, sulfolane, dimethyl sulfoxide and the like are preferably employed.
- the logarithmic viscosity of the polyimide precursor is not particularly limited, but the logarithmic viscosity in an N, N-dimethylacetamide solution having a concentration of 0.5 g / dL at 30 ° C. is 0.2 dL / g or more, more preferably 0.3 dL / g. As described above, it is particularly preferably 0.4 dL / g or more.
- the logarithmic viscosity is 0.2 dL / g or more, the molecular weight of the polyimide precursor is high, and the mechanical strength and heat resistance of the resulting polyimide are excellent.
- the total amount of the tetracarboxylic acid component and the diamine component is 5% by mass or more, preferably 10% by mass with respect to the total amount of the solvent, the tetracarboxylic acid component and the diamine component. % Or more, more preferably 15% by mass or more.
- the total amount of the tetracarboxylic acid component and the diamine component is 60% by mass or less, preferably 50% by mass or less, based on the total amount of the solvent, the tetracarboxylic acid component, and the diamine component. Is preferred.
- This concentration is a concentration approximately approximate to the solid content concentration resulting from the polyimide precursor, but if this concentration is too low, it becomes difficult to control the film thickness of the polyimide film obtained, for example, when producing a polyimide film. Sometimes.
- the viscosity (rotational viscosity) of the polyimide precursor composition is not particularly limited, but the rotational viscosity measured using an E-type rotational viscometer at a temperature of 25 ° C. and a shear rate of 20 sec ⁇ 1 is 0.01 to 1000 Pa ⁇ sec. Preferably, 0.1 to 100 Pa ⁇ sec is more preferable. Moreover, thixotropy can also be provided as needed. When the viscosity is in the above range, it is easy to handle when coating or forming a film, and the repelling is suppressed and the leveling property is excellent, so that a good film can be obtained.
- the polyimide precursor composition used in the present invention includes, as necessary, an imidization promoting catalyst (such as an imidazole compound), a chemical imidizing agent (an acid anhydride such as acetic anhydride, or an amine compound such as pyridine and isoquinoline), Antioxidants, UV absorbers, fillers (inorganic particles such as silica), dyes, pigments, coupling agents such as silane coupling agents, primers, flame retardants, antifoaming agents, leveling agents, rheology control agents (flow) Adjuvants), release agents and the like can be added.
- an imidization promoting catalyst such as an imidazole compound
- a chemical imidizing agent an acid anhydride such as acetic anhydride, or an amine compound such as pyridine and isoquinoline
- Antioxidants UV absorbers
- fillers inorganic particles such as silica
- dyes such as silane coupling agents
- primers primers, flame retardants
- the polyimide precursor composition used in the present invention may preferably contain an imidazole compound and / or a trialkylamine compound.
- the total content of the imidazole compound and / or the trialkylamine compound is preferably less than 4 mol, more preferably 0.05 mol or more and 1 mol or less, with respect to 1 mol of the repeating unit of the polyimide precursor.
- the imidazole compound and / or the trialkylamine compound is less than 4 moles, more preferably 0.05 moles or more and 1 mole or less, with respect to 1 mole of the repeating unit of the polyimide precursor.
- the mechanical properties of the resulting polyimide film can be improved while maintaining high transparency.
- the imidazole compound used in the present invention is not particularly limited as long as it is a compound having an imidazole skeleton.
- the imidazole compound used in the present invention is not particularly limited, and examples thereof include 1,2-dimethylimidazole, 1-methylimidazole, 2-methylimidazole, 2-phenylimidazole, imidazole, benzimidazole, and the like. Dimethylimidazole, 1-methylimidazole, 2-methylimidazole, imidazole and the like are preferable, and 1,2-dimethylimidazole and 1-methylimidazole are particularly preferable.
- An imidazole compound may be used individually by 1 type, and can also be used in combination of multiple types.
- the trialkylamine compound used in the present invention is not particularly limited, but is preferably a compound having an alkyl group having 1 to 5 carbon atoms, more preferably 1 to 4 carbon atoms, such as trimethylamine, triethylamine, tri-n-propyl. Amine, tributylamine, and the like.
- a trialkylamine compound may be used individually by 1 type, and can also be used in combination of multiple types.
- one or more imidazole compounds and one or more trialkylamine compounds can be used in combination.
- the content of the imidazole compound and / or the trialkylamine compound in the polyimide precursor composition is less than 4 moles with respect to 1 mole of the repeating unit of the polyimide precursor. Preferably there is.
- the content of the imidazole compound and / or trialkylamine compound is 4 mol or more with respect to 1 mol of the repeating unit of the polyimide precursor, the storage stability of the polyimide precursor composition is deteriorated.
- the content of the imidazole compound and / or trialkylamine compound is preferably 0.05 mol or more with respect to 1 mol of the repeating unit of the polyimide precursor, and also with respect to 1 mol of the repeating unit of the polyimide precursor. It is more preferably 2 mol or less, and particularly preferably 1 mol or less.
- 1 mol of the repeating unit of the polyimide precursor corresponds to 1 mol of the tetracarboxylic acid component.
- a polyimide precursor composition containing an imidazole compound and / or a trialkylamine compound is prepared by adding an imidazole compound and / or a trialkylamine compound to the polyimide precursor solution or solution composition obtained by the production method. Can do.
- a tetracarboxylic acid component tetracarboxylic dianhydride, etc.
- a diamine component tetracarboxylic dianhydride, etc.
- an imidazole compound and / or a trialkylamine compound are added to the solvent, and in the presence of an imidazole compound and / or a trialkylamine compound, tetra
- a polyimide precursor composition containing a polyimide precursor and an imidazole compound and / or a trialkylamine compound can also be obtained by reacting a carboxylic acid component and a diamine component.
- a polyimide precursor composition containing a polyimide precursor and a solvent is made of a substrate such as ceramic (glass, silicon, alumina, etc.), metal (copper, aluminum, stainless steel, etc.), heat-resistant plastic film (polyimide film, etc.), etc. And dried in a temperature range of 20 to 180 ° C., preferably 20 to 150 ° C. using hot air or infrared rays in a vacuum, an inert gas such as nitrogen, or in the air.
- a polyimide film / substrate laminate or a polyimide film can be produced by heating imidization in air using hot air or infrared rays, for example, at a temperature of about 200 to 500 ° C., more preferably about 250 to 450 ° C. it can. After the polyimide precursor film is heated and imidized on the substrate to obtain a polyimide film / substrate laminate, the polyimide film can be peeled off from the substrate to obtain a polyimide film.
- the heating imidization In order to prevent the resulting polyimide film from being oxidized and deteriorated, it is desirable to carry out the heating imidization in a vacuum or in an inert gas. If the temperature of the heating imidization is not too high, it may be performed in air.
- the imidization reaction of the polyimide precursor instead of the heat imidation by the heat treatment as described above, contains a dehydration cyclization reagent such as acetic anhydride in the presence of a tertiary amine such as pyridine or triethylamine. It is also possible to carry out by chemical treatment such as immersion in a solution.
- a partially imidized polyimide precursor is prepared by previously charging and stirring these dehydrating cyclization reagents in a polyimide precursor composition, and casting and drying it on a substrate. The partially imidized polyimide precursor film obtained was peeled off from the substrate, or the polyimide precursor film was peeled off from the substrate and the end of the film was fixed. By performing the heat treatment, a polyimide film / substrate laminate or a polyimide film can be obtained.
- the thickness of the polyimide film used in the present invention is usually 0.1 ⁇ m to 250 ⁇ m, more preferably 5 to 200 ⁇ m, and more preferably 10 to 150 ⁇ m, although it depends on the application.
- the polyimide film is used for applications where light is transmitted, such as for display applications, if the polyimide film is too thick, the light transmittance may be lowered. There is a risk that it will not be possible.
- a cover sheet or a cover film when a polyimide film is thin, impact resistance will become low and internal device protection may not be able to be fully performed.
- the polyimide film when a polyimide film such as a display application is used for an application where light is transmitted, it is desirable that the polyimide film has high transparency.
- the YI (yellowness) of the polyimide film used in the present invention is not particularly limited, but is preferably 4 or less, more preferably 3.5 or less, more preferably 3 or less, and even more preferably 2.8 or less. Particularly preferably 2.5 or less.
- the haze of the polyimide film used in the present invention is not particularly limited, but is preferably 3% or less, more preferably 2% or less, still more preferably 1.5% or less, and particularly preferably less than 1%. Can be. For example, when used in a display application, if the haze is higher than 3%, light may be scattered and the image may be blurred.
- the polyimide film used in the present invention is not particularly limited in light transmittance at a wavelength of 400 nm, but is preferably 77% or more, more preferably 80% or more, more preferably 82% or more, and particularly preferably more than 82%. Can do. When used for a display application or the like, if the light transmittance is low, it is necessary to strengthen the light source, which may cause problems such as energy consumption.
- the hard coat layer may be formed directly on the surface of the polyimide film.
- a primer layer is formed on the surface of the polyimide film, and a hard coat layer is formed thereon. Also good.
- the primer layer can be provided as necessary to improve the adhesion between the polyimide film and the hard coat layer, or to improve the weather resistance, impact resistance, or design.
- the material for forming the primer layer is not particularly limited, and any commonly used material can be used.
- the primer layer is formed of, for example, a cured product of a primer composition containing a curable resin component (including monomers and oligomers).
- a curable resin component including monomers and oligomers.
- the curable resin for the primer layer include silicone resins, acrylic resins, polyester resins, epoxy resins, urethane resins, and chlorinated polyolefin resins.
- the primer composition contains a solvent and a curing agent (light or thermal polymerization initiator) in addition to the curable resin component as necessary.
- the primer composition may contain various additives.
- Various additives include, for example, silane coupling agents, sensitizers, ultraviolet absorbers, light stabilizers, flame retardants, leveling materials, matting materials, antistatic agents, antifogging agents, plasticizers, lubricants, repellents. A liquid medicine etc. are mentioned.
- the primer layer is prepared by, for example, applying a primer composition containing the curable resin component as described above and, if necessary, a solvent and a curing agent (light or thermal polymerization initiator) to the surface of the polyimide film and, if necessary, a solvent. After being removed by drying, it can be cured and formed. Curing is performed, for example, by light irradiation or heat treatment. In the case of photocuring, examples of the light irradiated upon curing include visible light and ionizing radiation such as ultraviolet rays, X-rays, electron beams, ⁇ rays, ⁇ rays, and ⁇ rays. In the case of thermosetting, the heat treatment temperature at the time of curing is not particularly limited, but is usually about 80 to 200 ° C. Further, the primer composition may be cured by performing both light irradiation and heat treatment.
- a commercially available material may be used as the material (primer composition) for forming the primer layer.
- Commercially available products include, for example, UVPUD (urethane resin / acrylic resin blend) manufactured by Ube Industries, Ltd., 8SQ (siloxane cross-linked silicone-modified acrylic polymer [alkoxysilyl group in the acrylic polymer side chain]) manufactured by Taisei Fine Chemical Co., Ltd., Taisei Fine Chemical Co., Ltd. 8UA (urethane-modified acrylic polymer [acrylic side chain is urethane)) manufactured by Moment, SHP401 (polymethyl methacrylate solution (1-methoxy-2-propanol, diacetone alcohol), etc.).
- the thickness of the primer layer is not particularly limited, but is usually about 5 nm to 20 ⁇ m, preferably 10 nm to 10 ⁇ m. When the thickness of the primer layer is increased, the surface hardness may be insufficient when a hard coat layer is formed thereon.
- Hard coat layer is formed directly on the polyimide film or via a primer layer or the like.
- the hard coat layer of the present invention can be formed of an organic material (cured resin), an inorganic material, an organic-inorganic hybrid type material (cured resin containing an inorganic material, or the like).
- the formation method can be selected according to each material.
- the hard coat layer is preferably formed of a curable resin component or a cured product of a curable resin composition containing at least a curable resin component and an inorganic filler.
- the curable resin composition contains at least a curable resin component and is cured by light or heat to become a cured product (polymerized product, crosslinked product).
- the curable resin composition contains a curing agent (crosslinking agent, light or thermal polymerization initiator, co-reactant) as necessary. It is also preferable that the curable resin composition contains an inorganic filler.
- the curable resin composition may contain a solvent-drying resin in addition to the curable resin. Moreover, the solvent may be included if necessary.
- the curable resin composition is a liquid composition in which each component is mixed, a liquid film form that has been applied, a film form in which the solvent has been removed but has not been finally cured, etc. Includes items that have not been processed.
- the curable resin having photocurability examples include those having at least one photopolymerizable functional group.
- the “photopolymerizable functional group” is a functional group capable of undergoing a polymerization reaction by light irradiation.
- the photopolymerizable functional group include ethylenic double bonds such as a (meth) acryloyl group, a vinyl group, and an allyl group.
- Specific examples of the photocurable resin component include polyfunctional (meth) acrylate monomers, (meth) acrylate prepolymers, and photocurable polymers. The polyfunctional (meth) acrylate monomer and the (meth) acrylate prepolymer may be used alone or in combination.
- the light irradiated when the curable resin composition (in the case of photocuring) is cured includes visible light and ionizing radiation such as ultraviolet rays, X-rays, electron beams, ⁇ rays, ⁇ rays, and ⁇ rays. Is mentioned.
- thermosetting resin having thermosetting property has at least one thermosetting functional group.
- usable thermosetting resins include epoxy resins, polyimide resins, phenol resins, silicone resins, cyanate resins, bismaleimide triazine resins, and allylation. Examples include polyphenylene ether resin (thermosetting PPE), formaldehyde resin, unsaturated polyester, and copolymers thereof.
- the inorganic filler examples include silica, alumina, boehmite, talc, calcium carbonate, titanium oxide, iron oxide, silicon carbide, boron nitride, zirconium oxide, powders such as beads, single crystal fibers, and glass fibers. These can be used alone or in admixture of two or more. Among these, silica, alumina, boehmite, titanium oxide, zirconium oxide and the like are preferable, and silica, titanium oxide and zirconium oxide are more preferable.
- the inorganic filler may be preferably surface-modified. An example of such a particularly preferred inorganic filler is reactive silica.
- “reactive silica” is silica fine particles whose surface is modified with an organic compound having a photocurable unsaturated group.
- the silica fine particles (reactive silica) surface-modified with an organic compound having a photocurable unsaturated group are usually silica fine particles having an average particle size of about 0.5 to 500 nm, preferably an average particle size of 1 to 200 nm. It can be obtained by reacting a silanol group on the surface with a photocurable unsaturated group-containing organic compound having a functional group capable of reacting with the silanol group and a (meth) acryloyl group.
- the average particle size of the inorganic filler used in the present embodiment is preferably 1 to 200 nm, particularly preferably 10 to 200 nm, and further preferably 20 to 200 nm.
- the average particle size of the inorganic filler is 1 nm or more, the hard coat layer obtained by curing the curable resin composition has higher surface hardness. Further, when the average particle size of the inorganic filler is 200 nm or less, light scattering hardly occurs in the obtained hard coat layer, and the transparency of the hard coat layer becomes high.
- the content of the inorganic filler in the hard coat layer is preferably 10 to 85% by volume with respect to the hard coat layer, more preferably 20 to 80% by volume, and further preferably 40 to 70% by volume.
- the content is preferably 45 to 65% by volume.
- the content of the inorganic filler is 10% by volume or more, the surface hardness imparted to the hard coat layer becomes higher.
- formation of a hard-coat layer becomes easy because content of an inorganic filler is 85 volume% or less.
- the curable resin composition may contain various additives in addition to the components described above.
- the various additives include ultraviolet absorbers, antioxidants, light stabilizers, antistatic agents, silane coupling agents, anti-aging agents, thermal polymerization inhibitors, colorants, surfactants, storage stabilizers, plasticizers.
- the hard coat layer formed of the cured product of the curable resin composition is, for example, a curable resin composition containing at least the curable resin component as described above on the surface of the polyimide film (such as a primer layer on the surface of the polyimide film).
- a curable resin composition containing at least the curable resin component as described above on the surface of the polyimide film (such as a primer layer on the surface of the polyimide film).
- the thickness of the hard coat layer is not particularly limited, but is, for example, 1 to 50 ⁇ m, preferably 5 to 40 ⁇ m. In one embodiment, the thickness of the hard coat layer is more preferably 30 ⁇ m or less, and particularly preferably 20 ⁇ m or less, from the viewpoint of the bending resistance of the laminate. Sufficient surface hardness is provided to the laminated body of this invention because the thickness of a hard-coat layer is 1 micrometer or more. On the other hand, when the thickness of the hard coat layer is 50 ⁇ m or less, the laminate of the present invention is excellent in bending resistance and easy to handle, and the laminate is unnecessarily thickened or the manufacturing cost increases. Can be prevented.
- the laminate of the present invention can be produced by forming a hard coat layer on a polyimide film.
- the pencil hardness of the hard coat layer surface in the laminate of the present invention is not particularly limited, but is preferably 2H or more, more preferably 3H or more.
- the polyimide film / hard coat layer laminate is preferably highly transparent.
- the YI (yellowness) of the laminate of the present invention is not particularly limited, but is preferably 5 or less, more preferably 4.5 or less, more preferably 4 or less, and particularly preferably 3.5 or less. be able to.
- the haze of the laminate of the present invention is not particularly limited, but is preferably 3% or less, more preferably 2% or less, still more preferably 1.5% or less, and particularly preferably less than 1%. be able to. For example, when used in a display application, if the haze is higher than 3%, light may be scattered and the image may be blurred.
- the laminate of the present invention has high surface hardness and excellent transparency, and can be suitably used for, for example, a cover sheet or a cover film (protective film) on a display display surface.
- the laminate of the present invention can be suitably used for a display member, a touch panel member, a touch sensor member, an optical member, or the like other than as a cover sheet or a cover film for a display display surface.
- Table 1-1 shows tetracarboxylic acid components used in Examples and Comparative Examples
- Table 1-2 shows Examples and Comparative Examples
- Table 1-3 shows Examples and Comparative Examples of Imidazole Compounds Used in Comparative Examples. Describe the structural formula.
- the hard coat used in the following examples is as follows.
- Hard coat a FUJIHARD (registered trademark) HO3313U-8 manufactured by Fujikura Kasei Hard coat b: STR-SiA (registered trademark) TA-3090N manufactured by Taisei Fine Chemical Co., Ltd. was used. 3 g of IRUGACURE (registered trademark) 184 as a photoinitiator was added to 100 g of STR-SiA and stirred at room temperature to obtain a hard coat solution (hard coat b).
- Example 1 In a reaction vessel substituted with nitrogen gas, 2.12 g (10 mmol) of m-TD was placed, and DMAc was charged in an amount of 36.76 g in such an amount that the total monomer weight (total of diamine component and carboxylic acid component) was 10% by mass. And stirred at room temperature for 1 hour. To this solution, 1.96 g (10 mmol) of CBDA was gradually added. Stir at room temperature for 12 hours, and then add a mixed solution of 0.19 g of 1,2-dimethylimidazole and 0.19 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- the polyimide precursor solution filtered through a PTFE membrane filter was applied to a polyimide film manufactured by Ube Industries, Ltd., Upilex (registered trademark) -125S (hereinafter referred to as “125S”), and in a nitrogen atmosphere (oxygen concentration of 200 ppm or less) Then, the mixture was heated as it was on 125S from room temperature to 260 ° C. and thermally imidized to obtain a colorless and transparent polyimide film / 125S laminate. Subsequently, the obtained polyimide film was peeled from 125S, and the polyimide film whose film thickness is 50 micrometers was obtained.
- Ube Industries, Ltd., Upilex (registered trademark) -125S hereinafter referred to as “125S”
- nitrogen atmosphere oxygen concentration of 200 ppm or less
- Hard coat a (FUJIHARD HO3313U-8 manufactured by Fujikura Kasei) was applied to the obtained polyimide film with a bar coater so that the thickness of the hard coat layer after drying was about 10 ⁇ m. Subsequently, it was dried at 80 ° C. for 10 minutes, and irradiated with ultraviolet rays so that the integrated light quantity became 1000 mJ / cm 2 using a high-pressure mercury lamp, to obtain a polyimide film / hard coat laminate.
- TFMB 3.20 g (10 mmol) was put into a reaction vessel substituted with nitrogen gas, and DMAc was added in an amount of 20.65 g so that the total monomer weight (total of diamine component and carboxylic acid component) was 20% by mass. And stirred at room temperature for 1 hour. To this solution, 1.96 g (10 mmol) of CBDA was gradually added. Stir at room temperature for 12 hours, and then add a mixed solution of 0.19 g of 1,2-dimethylimidazole and 0.19 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 3 In a reaction vessel substituted with nitrogen gas, 1.06 g (5 mmol) of m-TD and 1.00 g (5 mmol) of 4,4′-ODA were placed, DMAc was charged, and the total mass of monomers (diamine component and carboxylic acid component) was added. Of 29.51 g in an amount of 12 mass% was added, and the mixture was stirred at room temperature for 1 hour. To this solution, 1.96 g (10 mmol) of CBDA was gradually added. Stir at room temperature for 12 hours, and then add a mixed solution of 0.19 g of 1,2-dimethylimidazole and 0.19 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 4 In a reaction vessel substituted with nitrogen gas, 1.60 g (5 mmol) of TFMB and 1.00 g (5 mmol) of 4,4′-ODA were placed, DMAc was charged, and the total mass of monomers (total of diamine component and carboxylic acid component) was charged. ) was added in an amount of 12% by mass, and the mixture was stirred at room temperature for 1 hour. To this solution, 1.96 g (10 mmol) of CBDA was gradually added. Stir at room temperature for 12 hours, and then add a mixed solution of 0.19 g of 1,2-dimethylimidazole and 0.19 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 5 In a reaction vessel substituted with nitrogen gas, 2.12 g (10 mmol) of m-TD was placed, and DMAc was added in an amount of 18.19 g in an amount such that the total monomer weight (total of diamine component and carboxylic acid component) was 19% by mass. And stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added. Stir at room temperature for 12 hours, and then add 0.10 g of 1,2-dimethylimidazole and 0.10 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.1 mol with respect to 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 6 In a reaction vessel substituted with nitrogen gas, 2.12 g (10 mmol) of m-TD was placed, and DMAc was added in an amount of 18.19 g in an amount such that the total monomer weight (total of diamine component and carboxylic acid component) was 19% by mass. And stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added. The mixture was stirred at room temperature for 12 hours to obtain a uniform and viscous polyimide precursor solution.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 7 In a reaction vessel substituted with nitrogen gas, 1.27 g (6 mmol) of m-TD and 1.17 g (4 mmol) of TPE-Q were charged, DMAc was charged, and the total amount of monomers charged (total of diamine component and carboxylic acid component) was added in an amount of 19% by mass and stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.4 mole per mole of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 8 TFMB 3.20 g (10 mmol) was put into a reaction vessel substituted with nitrogen gas, and DMAc was added in an amount of 21.41 g in such an amount that the total monomer weight (total of diamine component and carboxylic acid component) was 20% by mass. And stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added. Stir at room temperature for 12 hours, and then add a mixed solution of 0.19 g of 1,2-dimethylimidazole and 0.19 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 9 In a reaction vessel substituted with nitrogen gas, 2.24 g (7 mmol) of TFMB and 0.88 g (3 mmol) of TPE-Q were charged, DMAc was charged, and the total mass of monomers charged (total of diamine component and carboxylic acid component) was 22. 18.68 g of a mass% amount was added and stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 10 In a reaction vessel substituted with nitrogen gas, 0.637 g (3 mmol) of m-TD, 1.60 g (5 mmol) of TFMB and 0.58 g (2 mmol) of TPE-Q were added, DMAc was charged, and the total monomer mass ( 22.63 g of an amount such that the sum of the diamine component and the carboxylic acid component was 18% by mass was added and stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 11 In a reaction vessel substituted with nitrogen gas, 1.91 g (9 mmol) of m-TD and 0.20 g (1 mmol) of 4,4′-ODA were charged, DMAc was charged, and the total mass of monomers (diamine component and carboxylic acid component) was added. Of 31.24 g in an amount of 12 mass% was added, and the mixture was stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 12 In a reaction vessel substituted with nitrogen gas, 1.91 g (9 mmol) of m-TD and 0.20 g (1 mmol) of 4,4′-ODA were charged, DMAc was charged, and the total mass of monomers (diamine component and carboxylic acid component) was added. 16.40 g was added so that the total amount) was 20% by mass, and the mixture was stirred at room temperature for 1 hour. To this solution, CBDA 1.77 g (9 mmol) and PMDA-H 0.22 g (1 mmol) were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 13 In a reaction vessel substituted with nitrogen gas, 1.91 g (9 mmol) of m-TD and 0.20 g (1 mmol) of 4,4′-ODA were charged, DMAc was charged, and the total mass of monomers (diamine component and carboxylic acid component) was added. Of 31.68 g in an amount of 12 mass% was added, and the mixture was stirred at room temperature for 1 hour. To this solution, CBDA 1.77 g (9 mmol) and 6FDA 0.44 g (1 mmol) were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 14 In a reaction vessel substituted with nitrogen gas, 1.91 g (9 mmol) of m-TD and 0.20 g (1 mmol) of 4,4′-ODA were charged, DMAc was charged, and the total mass of monomers (diamine component and carboxylic acid component) was added. Of 30.58 g in an amount of 12 mass% was added, and the mixture was stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.29 g (1 mmol) of s-BPDA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- 1,2-dimethylimidazole is 0.1 mol with respect to 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- 1,2-dimethylimidazole is 0.1 mol with respect to 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- 1,2-dimethylimidazole is 0.1 mol with respect to 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 15 In a reaction vessel purged with nitrogen gas, 1.06 g (5 mmol) of m-TD and 1.60 g (5 mmol) of TFMB were charged, DMAc was charged, and the total mass of monomers charged (total of diamine component and carboxylic acid component) was 18. 21.18g of the quantity used as the mass% was added, and it stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 30 ⁇ m.
- hard coat b (STR-SiA manufactured by Taisei Fine Chemical Co., Ltd.) was applied with a bar coater so that the thickness of the hard coat layer after drying was about 10 ⁇ m.
- the film was dried at 80 ° C. for 10 minutes, and irradiated with ultraviolet rays using a high-pressure mercury lamp so that the integrated light amount became 1000 mJ / cm 2 .
- it heated at 150 degreeC for 10 minute (s), and the polyimide film / hard coat laminated body was obtained.
- Example 16 TFMB 3.20 g (10 mmol) was placed in a reaction vessel substituted with nitrogen gas, and DMAc was added in an amount of 21.18 g so that the total monomer weight (total of diamine component and carboxylic acid component) was 18% by mass. And stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added. Stir at room temperature for 12 hours, and then add a mixed solution of 0.19 g of 1,2-dimethylimidazole and 0.19 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 15 Furthermore, using the obtained polyimide film and hard coat b, the same operation as in Example 15 was performed to obtain a polyimide film / hard coat laminate.
- Example 17 In a reaction vessel purged with nitrogen gas, 1.06 g (5 mmol) of m-TD and 1.44 g (5 mmol) of TFMB were charged, DMAc was charged, and the total mass of monomers charged (total of diamine component and carboxylic acid component) was 18. 21.18g of the quantity used as the mass% was added, and it stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 15 Furthermore, using the obtained polyimide film and hard coat b, the same operation as in Example 15 was performed to obtain a polyimide film / hard coat laminate.
- Example 18 In a reaction vessel substituted with nitrogen gas, 1.49 g (7 mmol) of m-TD and 0.96 g (3 mmol) of TFMB were charged, DMAc was charged, and the total mass of monomers charged (total of diamine component and carboxylic acid component) was 16. 24.15g of the amount used as the mass% was added, and it stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 15 Furthermore, using the obtained polyimide film and hard coat b, the same operation as in Example 15 was performed to obtain a polyimide film / hard coat laminate.
- Example 19 In a reaction vessel substituted with nitrogen gas, 1.91 g (9 mmol) of m-TD and 0.32 g (1 mmol) of TFMB were charged, DMAc was charged, and the total mass of monomers charged (total of diamine component and carboxylic acid component) was 14. 26.91g of the quantity used as the mass% was added, and it stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a film thickness of 45 ⁇ m.
- Example 15 Furthermore, using the obtained polyimide film and hard coat b, the same operation as in Example 15 was performed to obtain a polyimide film / hard coat laminate.
- Example 20 In a reaction vessel substituted with nitrogen gas, 1.80 g (8.5 mmol) of m-TD and 0.23 g (1.5 mmol) of 3,5-DABA were put, DMAc was charged, and the total mass of monomers (diamine component and An amount of 26.13 g in which the total of carboxylic acid components was 16% by mass was added and stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 15 Furthermore, using the obtained polyimide film and hard coat b, the same operation as in Example 15 was performed to obtain a polyimide film / hard coat laminate.
- Example 21 TFMB 3.20 g (10 mmol) was put into a reaction vessel substituted with nitrogen gas, and DMAc was added in an amount of 20.65 g so that the total monomer weight (total of diamine component and carboxylic acid component) was 20% by mass. And stirred at room temperature for 1 hour. To this solution, 1.96 g (10 mmol) of CBDA was gradually added. Stir at room temperature for 12 hours, and then add a mixed solution of 0.19 g of 1,2-dimethylimidazole and 0.19 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 50 ⁇ m.
- Example 15 Furthermore, using the obtained polyimide film and hard coat b, the same operation as in Example 15 was performed to obtain a polyimide film / hard coat laminate.
- Example 22 In a reaction vessel substituted with nitrogen gas, 2.12 g (10 mmol) of m-TD was placed, and DMAc was added in an amount of 18.19 g in an amount such that the total monomer weight (total of diamine component and carboxylic acid component) was 19% by mass. And stirred at room temperature for 1 hour. To this solution, 1.77 g (9 mmol) of CBDA and 0.38 g (1 mmol) of CpODA were gradually added. Stir at room temperature for 12 hours, and then add 0.10 g of 1,2-dimethylimidazole and 0.10 g of DMAc to the reaction vessel and stir at room temperature for 30 minutes to obtain a uniform and viscous polyimide precursor solution. It was. When calculated from the charged amount, 1,2-dimethylimidazole is 0.1 mol with respect to 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 80 ⁇ m.
- Example 2 using the obtained polyimide film and hard coat a, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- Example 23 In a reaction vessel substituted with nitrogen gas, 1.70 g (8 mmol) of m-TD and 0.58 g (2 mmol) of TPE-Q were added, DMAc was charged, and the total amount of monomers charged (total of diamine component and carboxylic acid component) was added in an amount of 18% by mass and stirred at room temperature for 1 hour. To this solution, 1.57 g (8 mmol) of CBDA and 0.77 g (2 mmol) of CpODA were gradually added.
- 1,2-dimethylimidazole is 0.2 mol per 1 mol of the repeating unit of the polyimide precursor.
- Example 2 Using this polyimide precursor solution, the same operation as in Example 1 was performed to obtain a polyimide film having a thickness of 20 ⁇ m.
- Example 2 Furthermore, using the obtained polyimide film, the same operation as in Example 1 was performed to obtain a polyimide film / hard coat laminate.
- a laminate including a polyimide film and a hard coat layer formed on the polyimide film and having a high hardness on the hard coat layer surface can be provided.
- the laminated body which has a polyimide film and the hard-coat layer formed on this polyimide film, the hardness of the surface of a hard-coat layer is high, and was excellent also in transparency can be provided.
- This laminate can be particularly suitably used for a cover sheet or a cover film (protective film) for a display display surface, for example.
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Abstract
Description
1. ポリイミドを含むフィルムと、ハードコート層とを含む積層体であって、
前記ポリイミドが、
下記一般式(1)で表される繰り返し単位の合計含有量が、全繰り返し単位に対して、90モル%を超え、且つ、
下記化学式(2-1)で表される繰り返し単位および/または下記化学式(2-2)で表される繰り返し単位の合計含有量が、全繰り返し単位に対して、50モル%以上であることを特徴とする積層体。
前記化学式(2-1)で表される繰り返し単位および/または前記化学式(2-2)で表される繰り返し単位からなるか、または、
前記化学式(2-1)で表される繰り返し単位および/または前記化学式(2-2)で表される繰り返し単位と、Aが4員環または6員環(6員環を構成する炭素原子同士が結合して架橋構造を形成している架橋環であってもよい)の脂環構造を含む4価の基であり、Bが芳香族環を含む2価の基である前記一般式(1)で表される繰り返し単位の1種以上とからなることを特徴とする前記項1~3のいずれか1項に記載の積層体。
前記化学式(2-1)で表される繰り返し単位および/または前記化学式(2-2)で表される繰り返し単位と、
Aが芳香族環、または4員環または6員環(6員環を構成する炭素原子同士が結合して架橋構造を形成している架橋環であってもよい)の脂環構造を含む4価の基であり、Bが2つの芳香族環がエーテル結合(-O-)で連結された構造を含む2価の基である前記一般式(1)で表される繰り返し単位と
を含むことを特徴とする前記項1~3のいずれか1項に記載の積層体。
Aが4員環または6員環(6員環を構成する炭素原子同士が結合して架橋構造を形成している架橋環であってもよい)の脂環構造を含む4価の基であり、Bが下記化学式(B-1)で表される2価の基、下記化学式(B-2)で表される2価の基、または2つの芳香族環がエーテル結合(-O-)で連結された構造を含む2価の基である前記一般式(1)で表される繰り返し単位の1種以上とからなり、
ただし、前記化学式(2-1)で表される繰り返し単位および/または前記化学式(2-2)で表される繰り返し単位の合計含有量が、全繰り返し単位に対して、50モル%以上であることを特徴とする前記項5に記載の積層体。
前記硬化性樹脂組成物の塗膜を硬化して、ハードコート層を形成する工程と
を有することを特徴とする積層体の製造方法。
12. 前記項1~8のいずれか1項に記載の積層体を含むことを特徴とする光学部材、表示部材、タッチパネル部材、またはタッチセンサー部材。
本発明において用いるポリイミドフィルムは、ポリイミドを含むフィルムであり、必要に応じて、フィラー(シリカ等の無機粒子や有機粒子)、酸化防止剤、紫外線吸収剤、染料、顔料、シランカップリング剤などのカップリング剤、プライマー、難燃材、レベリング剤、剥離剤、その他のポリイミドフィルムに一般的に使用されている各種添加剤などを含有することができる。ある実施態様においては、フィルム強度やフィルム表面の平滑性の点から、あるいは製造の容易さ、コストの点から、本発明のポリイミドフィルムは、シリカ等の無機粒子、及び有機粒子(フィラー)を含有しないことが好ましい。
本発明のポリイミド前駆体は、溶媒中でテトラカルボン酸成分としてのテトラカルボン酸二無水物とジアミン成分とを略等モル、好ましくはテトラカルボン酸成分に対するジアミン成分のモル比[ジアミン成分のモル数/テトラカルボン酸成分のモル数]が好ましくは0.90~1.10、より好ましくは0.95~1.05の割合で、例えば120℃以下の比較的低温度でイミド化を抑制しながら反応することによって、ポリイミド前駆体溶液組成物として好適に得ることができる。
テトラカルボン酸二無水物を任意のアルコールと反応させ、ジエステルジカルボン酸を得た後、塩素化試薬(チオニルクロライド、オキサリルクロライドなど)と反応させ、ジエステルジカルボン酸クロライドを得る。このジエステルジカルボン酸クロライドとジアミンを-20~120℃、好ましくは-5~80℃の範囲で1~72時間攪拌することで、ポリイミド前駆体が得られる。80℃以上で反応させる場合、分子量が重合時の温度履歴に依存して変動し、また熱によりイミド化が進行することから、ポリイミド前駆体を安定して製造できなくなる可能性がある。また、ジエステルジカルボン酸とジアミンを、リン系縮合剤や、カルボジイミド縮合剤などを用いて脱水縮合することでも、簡便にポリイミド前駆体が得られる。
あらかじめ、ジアミンとシリル化剤を反応させ、シリル化されたジアミンを得る。必要に応じて、蒸留等により、シリル化されたジアミンの精製を行う。そして、脱水された溶剤中にシリル化されたジアミンを溶解させておき、攪拌しながら、テトラカルボン酸二無水物を徐々に添加し、0~120℃、好ましくは5~80℃の範囲で1~72時間攪拌することで、ポリイミド前駆体が得られる。80℃以上で反応させる場合、分子量が重合時の温度履歴に依存して変動し、また熱によりイミド化が進行することから、ポリイミド前駆体を安定して製造できなくなる可能性がある。
1)の方法で得られたポリアミド酸溶液とシリル化剤を混合し、0~120℃、好ましくは5~80℃の範囲で1~72時間攪拌することで、ポリイミド前駆体が得られる。80℃以上で反応させる場合、分子量が重合時の温度履歴に依存して変動し、また熱によりイミド化が進行することから、ポリイミド前駆体を安定して製造できなくなる可能性がある。
本発明の積層体においては、ハードコート層をポリイミドフィルムの表面上に直接形成してもよいが、例えば、ポリイミドフィルムの表面上にプライマー層を形成し、その上にハードコート層を形成してもよい。プライマー層は、必要に応じて、ポリイミドフィルムとハードコート層との密着性を向上させるために、あるいは、耐候性、耐衝撃性、または意匠性を向上させるために設けることができる。
本発明において、ハードコート層は、ポリイミドフィルム上に直接、または、プライマー層などを介して形成される。
以上のように、ポリイミドフィルムの上にハードコート層を形成することで、本発明の積層体を製造することができる。
[鉛筆硬度]
JIS K5600-5-4に準じて、ポリイミドフィルムの鉛筆硬度の測定を行った。荷重は750gとした。
[YI(黄色度)]
ASTM E313に準じて、ポリイミドフィルム/ハードコート積層体のYIの測定を行った。
濁度計/NDH2000(日本電色工業製)を用いて、JIS K7136の規格に準拠して、ポリイミドフィルム/ハードコート積層体のヘイズを測定した。
JIS K5600-5-4に準じて、ポリイミドフィルム/ハードコート積層体のハードコート層表面の鉛筆硬度の測定を行った。荷重は750gとした。
m-TD:2,2’-ジメチル-4,4’-ジアミノビフェニル〔純度:99.85%(GC分析)〕
TFMB:2,2’-ビス(トリフルオロメチル)ベンジジン〔純度:99.83%(GC分析)〕
4,4’-ODA: 4,4’-オキシジアニリン〔純度:99.9%(GC分析)〕
TPE-Q:1,4-ビス(4-アミノフェノキシ)ベンゼン
3,5-DABA:3,5-ジアミノ安息香酸
[テトラカルボン酸成分]
CBDA: 1,2,3,4-シクロブタンテトラカルボン酸二無水物〔純度:99.9%(GC分析)〕
CpODA:ノルボルナン-2-スピロ-α-シクロペンタノン-α’-スピロ-2’’-ノルボルナン-5,5’’,6,6’’-テトラカルボン酸二無水物
PMDA-H:1,2,4,5-シクロヘキサンテトラカルボン酸二無水物〔純度:99.9%(GC分析)〕
6FDA:4,4’-(2,2-ヘキサフルオロイソプロピレン)ジフタル酸二無水物〔純度 99.77%(H-NMR分析)〕
s-BPDA:3,3’,4,4’-ビフェニルテトラカルボン酸二無水物〔純度99.9%(H-NMR分析)〕
CPDA:1,2,3,4-シクロペンタンテトラカルボン酸二無水物
1,2-DMz:1,2-ジメチルイミダゾール
DMAc: N,N-ジメチルアセトアミド
ハードコートa:藤倉化成製 FUJIHARD(登録商標) HO3313U-8
ハードコートb:大成ファインケミカル社製のSTR-SiA(登録商標)TA-3090Nを用いた。STR-SiA 100gに対して、光開始剤としてIRUGACURE(登録商標)184 3gを添加し、室温で攪拌してハードコート用溶液(ハードコートb)を得た。
窒素ガスで置換した反応容器中にm-TD 2.12g(10ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 10質量%となる量の36.76gを加え、室温で1時間攪拌した。この溶液にCBDA 1.96g(10ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にTFMB 3.20g(10ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 20質量%となる量の20.65gを加え、室温で1時間攪拌した。この溶液にCBDA 1.96g(10ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.06g(5ミリモル)と4,4’-ODA 1.00g(5ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 12質量%となる量の29.51gを加え、室温で1時間攪拌した。この溶液にCBDA 1.96g(10ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にTFMB 1.60g(5ミリモル)と4,4’-ODA 1.00g(5ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 12質量%となる量の33.47gを加え、室温で1時間攪拌した。この溶液にCBDA 1.96g(10ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 2.12g(10ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 19質量%となる量の18.19gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.10gとDMAc 0.10gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.1モルである。
窒素ガスで置換した反応容器中にm-TD 2.12g(10ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 19質量%となる量の18.19gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。
窒素ガスで置換した反応容器中にm-TD 1.27g(6ミリモル)とTPE-Q 1.17g(4ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 19質量%となる量の19.57gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.38gとDMAc 0.38gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.4モルである。
窒素ガスで置換した反応容器中にTFMB 3.20g(10ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 20質量%となる量の21.41gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にTFMB 2.24g(7ミリモル)とTPE-Q 0.88g(3ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 22質量%となる量の18.68gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 0.637g(3ミリモル)とTFMB 1.60g(5ミリモル)とTPE-Q 0.58g(2ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 18質量%となる量の22.63gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.91g(9ミリモル)と4,4’-ODA 0.20g(1ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 12質量%となる量の31.24gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.91g(9ミリモル)と4,4’-ODA 0.20g(1ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 20質量%となる量の16.40gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とPMDA-H 0.22g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.91g(9ミリモル)と4,4’-ODA 0.20g(1ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 12質量%となる量の31.68gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)と6FDA 0.44g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.91g(9ミリモル)と4,4’-ODA 0.20g(1ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 12質量%となる量の30.58gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とs-BPDA 0.29g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にTFMB 0.96g(3ミリモル)とTPE-Q 2.05g(7ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 16質量%となる量の26.08gを加え、室温で1時間攪拌した。この溶液にCBDA 1.96g(10ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.1モルである。
窒素ガスで置換した反応容器中にTFMB 1.60g(5ミリモル)とTPE-Q 1.46g(5ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 22質量%となる量の22.49gを加え、室温で1時間攪拌した。この溶液にCBDA 0.59g(3ミリモル)とCpODA 2.69g(7ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.10gとDMAc 0.10gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.1モルである。
窒素ガスで置換した反応容器中にm-TD 1.06g(5ミリモル)とTPE-Q 1.46g(5ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 18質量%となる量の23.00gを加え、室温で1時間攪拌した。この溶液にCBDA 1.37g(7ミリモル)とCpODA 1.15g(3ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.10gとDMAc 0.10gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.1モルである。
窒素ガスで置換した反応容器中にm-TD 1.06g(5ミリモル)とTPE-Q 1.46g(5ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 18質量%となる量の24.72gを加え、室温で1時間攪拌した。この溶液にCBDA 0.98g(5ミリモル)とCpODA 1.92g(5ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.10gとDMAc 0.10gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.1モルである。
窒素ガスで置換した反応容器中にm-TD 1.91g(9ミリモル)と4,4’-ODA 0.20g(1ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 25質量%となる量の12.16gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCPDA 0.21g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.70g(8ミリモル)とTFMB 0.64g(2ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 22質量%となる量の16.24gを加え、室温で1時間攪拌した。この溶液にPMDA-H 2.24g(10ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.06g(5ミリモル)とTFMB 1.60g(5ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 18質量%となる量の21.18gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にTFMB 3.20g(10ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 18質量%となる量の21.18gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.06g(5ミリモル)とTFMB 1.44g(5ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 18質量%となる量の21.18gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.49g(7ミリモル)とTFMB 0.96g(3ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 16質量%となる量の24.15gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.91g(9ミリモル)とTFMB 0.32g(1ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 14質量%となる量の26.91gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 1.80g(8.5ミリモル)と3,5-DABA 0.23g(1.5ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 16質量%となる量の26.13gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にTFMB 3.20g(10ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 20質量%となる量の20.65gを加え、室温で1時間攪拌した。この溶液にCBDA 1.96g(10ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
窒素ガスで置換した反応容器中にm-TD 2.12g(10ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 19質量%となる量の18.19gを加え、室温で1時間攪拌した。この溶液にCBDA 1.77g(9ミリモル)とCpODA 0.38g(1ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.10gとDMAc 0.10gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.1モルである。
窒素ガスで置換した反応容器中にm-TD 1.70g(8ミリモル)とTPE-Q 0.58g(2ミリモル)を入れ、DMAcを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が 18質量%となる量の23.00gを加え、室温で1時間攪拌した。この溶液にCBDA 1.57g(8ミリモル)とCpODA 0.77g(2ミリモル)を徐々に加えた。室温で12時間撹拌し、その後、1,2-ジメチルイミダゾール 0.19gとDMAc 0.19gの混合溶液を反応容器に加え、室温で30分間攪拌し、均一で粘稠なポリイミド前駆体溶液を得た。仕込み量から計算すると、ポリイミド前駆体の繰り返し単位1モルに対して、1,2-ジメチルイミダゾールは0.2モルである。
Claims (12)
- ポリイミドを含むフィルムと、ハードコート層とを含む積層体であって、
前記ポリイミドが、
下記一般式(1)で表される繰り返し単位の合計含有量が、全繰り返し単位に対して、90モル%を超え、且つ、
下記化学式(2-1)で表される繰り返し単位および/または下記化学式(2-2)で表される繰り返し単位の合計含有量が、全繰り返し単位に対して、50モル%以上であることを特徴とする積層体。
(式中、Aは、芳香族環、または4員環または6員環(6員環を構成する炭素原子同士が結合して架橋構造を形成している架橋環であってもよい)の脂環構造を含む4価の基であり、Bは、芳香族環、または脂環構造を含む2価の基である。ただし、各繰り返し単位に含まれるAおよびBは、同一であっても異なっていてもよい。)
- 前記ポリイミドが、前記化学式(2-1)で表される繰り返し単位および/または前記化学式(2-2)で表される繰り返し単位の合計含有量が、全繰り返し単位に対して、60モル%以上であることを特徴とする請求項1に記載の積層体。
- 前記ポリイミドが、前記化学式(2-1)で表される繰り返し単位の含有量が、全繰り返し単位に対して、50モル%以上であることを特徴とする請求項1に記載の積層体。
- 前記ポリイミドが、
前記化学式(2-1)で表される繰り返し単位および/または前記化学式(2-2)で表される繰り返し単位からなるか、または、
前記化学式(2-1)で表される繰り返し単位および/または前記化学式(2-2)で表される繰り返し単位と、Aが4員環または6員環(6員環を構成する炭素原子同士が結合して架橋構造を形成している架橋環であってもよい)の脂環構造を含む4価の基であり、Bが芳香族環を含む2価の基である前記一般式(1)で表される繰り返し単位の1種以上とからなることを特徴とする請求項1~3のいずれか1項に記載の積層体。 - 前記ポリイミドが、
前記化学式(2-1)で表される繰り返し単位および/または前記化学式(2-2)で表される繰り返し単位と、
Aが芳香族環、または4員環または6員環(6員環を構成する炭素原子同士が結合して架橋構造を形成している架橋環であってもよい)の脂環構造を含む4価の基であり、Bが2つの芳香族環がエーテル結合(-O-)で連結された構造を含む2価の基である前記一般式(1)で表される繰り返し単位と
を含むことを特徴とする請求項1~3のいずれか1項に記載の積層体。 - 前記ハードコート層表面の鉛筆硬度が、2H以上であることを特徴とする請求項1~6のいずれか1項に記載の積層体。
- 前記ハードコート層が、硬化性樹脂成分、または、少なくとも硬化性樹脂成分と無機フィラーを含む硬化性樹脂組成物の硬化物で形成されていることを特徴とする請求項1~7のいずれか1項に記載の積層体。
- 下記一般式(1)で表される繰り返し単位の合計含有量が、全繰り返し単位に対して、90モル%を超え、且つ、下記化学式(2-1)で表される繰り返し単位および/または下記化学式(2-2)で表される繰り返し単位の合計含有量が、全繰り返し単位に対して、50モル%以上であるポリイミドを含むフィルムの上に、少なくとも硬化性樹脂成分を含む硬化性樹脂組成物を塗布する工程と、
前記硬化性樹脂組成物の塗膜を硬化して、ハードコート層を形成する工程と
を有することを特徴とする積層体の製造方法。
(式中、Aは、芳香族環、または4員環または6員環(6員環を構成する炭素原子同士が結合して架橋構造を形成している架橋環であってもよい)の脂環構造を含む4価の基であり、Bは、芳香族環、または脂環構造を含む2価の基である。ただし、各繰り返し単位に含まれるAおよびBは、同一であっても異なっていてもよい。)
- 前記硬化性樹脂組成物が、さらに、無機フィラーを含むことを特徴とする請求項9に記載の積層体の製造方法。
- 請求項1~8のいずれか1項に記載の積層体を含むことを特徴とするディスプレイ表示面のカバーシート、またはカバーフィルム。
- 請求項1~8のいずれか1項に記載の積層体を含むことを特徴とする光学部材、表示部材、タッチパネル部材、またはタッチセンサー部材。
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6551640B1 (ja) * | 2018-02-05 | 2019-07-31 | 三菱瓦斯化学株式会社 | 非対称膜 |
| WO2019151337A1 (ja) * | 2018-02-05 | 2019-08-08 | 三菱瓦斯化学株式会社 | 非対称膜 |
| WO2019211972A1 (ja) * | 2018-05-01 | 2019-11-07 | 三菱瓦斯化学株式会社 | ポリイミド樹脂、ポリイミドワニス及びポリイミドフィルム |
| JPWO2020246466A1 (ja) * | 2019-06-04 | 2020-12-10 | ||
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| TWI844593B (zh) * | 2018-12-13 | 2024-06-11 | 日商三菱瓦斯化學股份有限公司 | 聚醯亞胺樹脂組成物及聚醯亞胺薄膜 |
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| WO2025121334A1 (ja) * | 2023-12-08 | 2025-06-12 | 三菱瓦斯化学株式会社 | ポリイミド樹脂 |
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| KR102227369B1 (ko) * | 2018-12-17 | 2021-03-15 | 율촌화학 주식회사 | 폴더블 커버 윈도우용 박막 하드코팅 필름 제조방법 및 이에 따라 제조된 폴더블 커버 윈도우용 박막 하드코팅 필름 |
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| CN116171222A (zh) * | 2020-09-29 | 2023-05-26 | 东洋纺株式会社 | 无机基板和聚酰胺酸固化物的层叠体 |
| WO2022133722A1 (zh) * | 2020-12-22 | 2022-06-30 | 宁波长阳科技股份有限公司 | 聚酰亚胺材料及其制备方法和应用 |
| CN112646183A (zh) * | 2020-12-22 | 2021-04-13 | 宁波长阳科技股份有限公司 | 聚酰亚胺材料及其制备方法和应用 |
| KR20250032587A (ko) * | 2023-08-31 | 2025-03-07 | 피아이첨단소재 주식회사 | 내열성 및 기계적 물성이 우수한 폴리이미드 필름 및 그의 제조방법 |
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| CN112041371A (zh) * | 2018-05-01 | 2020-12-04 | 三菱瓦斯化学株式会社 | 聚酰亚胺树脂、聚酰亚胺清漆及聚酰亚胺薄膜 |
| JPWO2019211972A1 (ja) * | 2018-05-01 | 2021-05-13 | 三菱瓦斯化学株式会社 | ポリイミド樹脂、ポリイミドワニス及びポリイミドフィルム |
| JP7302595B2 (ja) | 2018-05-01 | 2023-07-04 | 三菱瓦斯化学株式会社 | ポリイミド樹脂、ポリイミドワニス及びポリイミドフィルム |
| TWI844593B (zh) * | 2018-12-13 | 2024-06-11 | 日商三菱瓦斯化學股份有限公司 | 聚醯亞胺樹脂組成物及聚醯亞胺薄膜 |
| CN113906083B (zh) * | 2019-06-04 | 2023-08-22 | 株式会社钟化 | 聚酰亚胺树脂及其制造方法、以及聚酰亚胺薄膜及其制造方法 |
| WO2020246466A1 (ja) * | 2019-06-04 | 2020-12-10 | 株式会社カネカ | ポリイミド樹脂およびその製造方法、ならびにポリイミドフィルムおよびその製造方法 |
| TWI849136B (zh) * | 2019-06-04 | 2024-07-21 | 日商鐘化股份有限公司 | 聚醯亞胺樹脂及其製造方法、與聚醯亞胺膜及其製造方法 |
| JP7510414B2 (ja) | 2019-06-04 | 2024-07-03 | 株式会社カネカ | ポリイミド樹脂およびその製造方法、ならびにポリイミドフィルムおよびその製造方法 |
| JPWO2020246466A1 (ja) * | 2019-06-04 | 2020-12-10 | ||
| CN113906083A (zh) * | 2019-06-04 | 2022-01-07 | 株式会社钟化 | 聚酰亚胺树脂及其制造方法、以及聚酰亚胺薄膜及其制造方法 |
| JP2022119814A (ja) * | 2020-05-29 | 2022-08-17 | 東洋紡株式会社 | ポリイミドフィルムおよびその製造方法 |
| JP7287536B2 (ja) | 2020-05-29 | 2023-06-06 | 東洋紡株式会社 | ポリイミドフィルムおよびその製造方法 |
| JP7287535B2 (ja) | 2020-05-29 | 2023-06-06 | 東洋紡株式会社 | ポリイミドフィルムおよびその製造方法 |
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| TWI749914B (zh) * | 2020-11-27 | 2021-12-11 | 臻鼎科技股份有限公司 | 透明聚醯亞胺溶液及其製備方法、透明聚醯亞胺膜及其應用 |
| WO2022124195A1 (ja) * | 2020-12-08 | 2022-06-16 | 株式会社カネカ | ポリイミド樹脂、ポリイミドフィルムおよびその製造方法 |
| JPWO2022124195A1 (ja) * | 2020-12-08 | 2022-06-16 | ||
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| WO2025121334A1 (ja) * | 2023-12-08 | 2025-06-12 | 三菱瓦斯化学株式会社 | ポリイミド樹脂 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018088543A1 (ja) | 2019-10-10 |
| KR20190082281A (ko) | 2019-07-09 |
| CN109922956A (zh) | 2019-06-21 |
| WO2018088542A1 (ja) | 2018-05-17 |
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