TW201102416A - Highly adhesive polyester film for optical use - Google Patents

Abstract

Provided is a highly adhesive polyester film for optical use which inhibits the iridescent coloration occurring in the light of a fluorescent lamp, is excellent in adhesion to hard coat layers and adhesion under high-temperature high-humidity conditions (moist-heat resistance), and has scraping resistance of coating layer. The highly adhesive polyester film for optical use has a coating layer on at least one side of a polyester film, and the coating layer is mainly composed of polyester resin, particle A and particle B; wherein the said polyester resin contains naphthalene dicarboxylic acid as acid component, dicarboxylic acid represented by the structural formula (1) and/ or diol component represented by the structural formula (2); wherein the particle A is metal oxide particle with refractive index of 1.7-3.0 and the particle B is particle with average grain diameter of 200nm-700nm. (1) HOOC-(CH2)n-COOH (wherein n is an integer of 4 ≤ n ≤ 10) (2) HO-(CH2)n-OH (wherein n is an integer of 4 ≤ n ≤ 10)

Description

201102416 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an easy-adhesive polyester film for optics. That is, the present invention relates to a video tube (CRT) such as a touch screen, a liquid crystal display (LCD), a television or a computer, a PDP, an organic electroluminescence (organic EL), and the like. The front side of the display screen is provided with anti-reflection properties such as suppression of external light, glare, and iridescent color, and adhesion to the hard coat layer and excellent adhesion after high-temperature and high-humidity treatment. Use an easy-adhesive polyester film. [Prior Art] At present, in the front of display screens, decorative materials, and the like, such as touch screens, computers, and liquid crystal display devices, a cured film formed by laminating a transparent hard coat layer is used. In addition, as the transparent plastic film of the substrate, a transparent biaxially oriented polyester film is generally used, and in order to improve the adhesion between the polyester film and the hard coat layer of the substrate, a coating layer having an easy connection property is further formed. As its middle layer. The cured film is required to have durability against temperature, humidity, light, transparency, chemical resistance, scratch resistance, antifouling property, and the like. At the same time, since hardened films are often used on the surfaces of display screens, decorative materials, etc., they are required to be readable and designable. Therefore, in order to suppress glare and iridescent color generated by reflected light when viewed from an arbitrary angle, generally, a high-refractive-index layer and a low-refractive-index layer are laminated on the upper layer of the hard coat layer to form a multilayer structure. Anti-reflective layer. However, in recent years, in the use of display screens, decorative materials, etc. * In recent years, due to the requirements of large screen (large area) and high level, it is particularly required to be able to re-enact 201102416, which suppresses the generation of rainbow-like colors under fluorescent lamps. The extent of the spot. On the other hand, in the current fluorescent lamp to achieve the reproducibility of daylight color, the 3-wavelength type has become the mainstream, which makes it easier to generate interference spots. In addition, the simplification of the anti-reflective layer is also more demanding for cost reduction. Therefore, at present, even a cured film having no antireflection layer is required to suppress interference spots as much as possible. The iridescent color (interference spot) of the cured film is generally considered to be the difference between the refractive index of the polyester film of the substrate (such as 1.62 to 1.65) and the refractive index of the hard coat formed by the acrylic resin (such as 1.49). It happened when it was big. Therefore, in order to reduce the difference in refractive index between the laminated layers to prevent the occurrence of interference spots, it has been previously disclosed that a coating layer is formed on the polyester film of the substrate to make the refractive index difference between the polyester film and the coating layer, and the coating layer and the hard coat layer are The refractive index difference is reduced to control the refractive index of the coating layer by the content of the resin constituting the coating layer and the high refractive additive. Examples of the method include (1) a water-soluble polyester resin, a water-soluble metal chelating compound or a metal ruthenium compound (Patent Document 1), (2) a polymer-containing binder and a high refractive index metal oxide. A proposal such as an example (Patent Document 2). When the occurrence of interference spots is suppressed by the above methods (1) and (2), it is important to control the thickness of the coating layer. When the coating layer is formed, reflected light is generated at the interface of the hard coat layer-coating layer, and reflected light is also generated at the interface between the coating layer and the polyester film. Therefore, in order to cancel the two kinds of wavelengths, the optical phase is offset. The design must control the thickness of the coating layer to a specific extent. Therefore, when the thickness of the coating layer exceeds the predetermined range, interference spots occur in such reflected light. Therefore, in the above methods (1) and (2), the thickness of the coating layer must be extremely tightly controlled in production management. 。 。 。 。 。 。 。 。 。 。 。 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于The development of mobile information devices such as mobile phones, car navigation systems, and e-books has expanded beyond the scope of outdoor use. In these respects, for example, a mobile phone for a touch screen, on the inner surface of a hard coat film such as an icon sheet, because of the use of the design, the halo is guided, resulting in more defects in visibility. Significant. On the other hand, in recent years, in order to improve the production efficiency, the solvent in the coating liquid for forming a hard coat layer gradually uses various solvents which are preferably fast-drying and leveling, and thus starts to use the coating contained in the dissolvable polyester film. Layer. Therefore, in the above method, even if the coating layer having a specific thickness is contained therein, the thickness of the coating layer is changed by the solvent in the coating liquid for forming a hard coat layer, so that the interference speckle cannot be suppressed. Meanwhile, in the method of the above (2), the main component of the polyester resin used for controlling the refractive index is a naphthalene dicarboxylic acid component or a short-chain glycol component, so that the hardness of the resin composition is high, that is, hard. Coating layer. Therefore, when the film is cut, the particles in the coating layer are peeled off (scraping), and foreign matter is formed and adhered. In addition, in recent years, the productivity is increased, and the hard coat layer is laminated and slitted. The development of the high-speed processing such as processing has caused the coating of the 201102416 layer to be strongly rubbed. Therefore, there has been a problem in that the coating layer having no problem has been subjected to scratches due to thickness variation and quality variation. In particular, since the hardness of the resin used for increasing the refractive index is high and brittle, the coating layer for suppressing interference spots is more likely to increase the scratching tendency of the coating layer. Therefore, it is highly desirable to have a solvent even in various solvents. The film can also be widely applied to have an effect of suppressing interference spots, and the coating layer is less scratched under high-speed processing, that is, an optically easily adhesive polyester film having a stable interference spot reducing effect. That is, an object of the present invention is to provide an optically easy-adhesive polyester film and an optical laminated polyester film obtained by laminating a hard coat layer on the film, which is capable of suppressing iridescent color generated under a fluorescent lamp, and The adhesion to the hard coat layer and the adhesion under high temperature and high humidity are also good, and the coating layer under high speed post-processing also has scratch resistance. Means for Solving the Problems The present inventors have made efforts to review the composition of the coating layer in view of the above problems. As a result, it has been found that even when a large particle having an average particle diameter of 200 nm or more and 700 nm or less is added to a coating layer having a certain refractive index, the result is even Corresponding thickness variation can still stably suppress the surprising effect of interference spots, and the use of a polyester resin containing a long-chain dicarboxylic acid component and/or a long-chain glycol component having a specific carbon number can significantly suppress scratching of the coating layer. Thus, the optical laminated polyester film of the present invention is completed. In other words, the present invention is an optically easy-to-adhere polyester film comprising an optically easy-adhesive polyester film comprising a polyester resin and a coating layer of particles A and B on at least one side of the polyester film, The polyester resin contains naphthalene diacetate 201102416 as an acid component, and a dicarboxylic acid component represented by the following formula (i) and/or a glycol component represented by the following formula (2), wherein the particle A is a refraction The metal oxide particles having a ratio of 1.7 or more and 3.0 or less, and the particles B are particles having an average particle diameter of 200 nm or more and 700 nm or less. (1) HOOC-(CH2)n-COOH (wherein η is an integer of 4SnS10) (2) H〇-(CH2)n-OH (wherein η is an integer of 4SnS10) The present invention is easy to use for the aforementioned optical use The polyester film is characterized in that it contains a crosslinking agent in the coating layer. The present invention is the above-mentioned optical easily-adhesive polyester film, which is characterized in that the crosslinking agent is a urea-based crosslinking agent, an epoxy-based crosslinking agent, a melamine-based crosslinking agent, an isocyanate-based crosslinking agent, or a hydrazine. A crosslinker of at least one selected from the group consisting of an oxazoline crosslinking agent, a carbodiimide, and a 1 '13 (16) crosslinking agent. The present invention is an optical laminated polyester film in which an electron beam, an ultraviolet curable acryl resin, or a hard coat layer of a siloxane-based thermosetting resin is laminated on a coating layer of the optically-advancing polyester film. to make. Advantageous Effects of Invention The optically easy-adhesive polyester film of the present invention can suppress interference spots well when laminated a hard coat layer on the easy-adhesion layer of the film, and its adhesion to the hard coat layer and high temperature and high humidity The lower adhesion (moisture resistance and heat resistance) is also excellent, and the scratch resistance of the coating layer can be remarkably suppressed. Therefore, the present invention is suitable as a base film of an optically laminated polyester film in which a hard coat layer is laminated. [Embodiment] Embodiment of the invention (polyester film)

.201102416 A film composed of a polyester film-based polyester resin used as a substrate in the present invention, the main component of which is a component of polyethylene terephthalate, polytrimethylene terephthalate or polyparaphenylene. At least one of butylene formate and polyethylene naphthalate. Among these polyester resins, ethylene phthalate is preferred in terms of achieving physical properties and cost balance. At the same time, these polyester films can be biaxially stretched, and their chemical resistance, heat resistance, mechanical strength, and the like can be improved. Further, the above-mentioned biaxially stretched poly-films may form a single layer or may form a plurality of layers. In the range in which the effects of the present invention can be exhibited, the respective layers may further contain various additives in the polyester resin as needed. Examples of the additives may, for example, be antioxidants, light stabilizers, anti-condensation agents, organic wetting agents, anti-chargers, ultraviolet absorbers, surfactants, and the like. Further, in order to improve workability such as slidability, flexibility, and anti-caking property of the film, and abrasion characteristics such as abrasion resistance and scratch resistance, the polyester film of the substrate may contain inactive particles as occasion demands. However, the film of the present invention is used as a substrate film for an optical member, and it is required to have excellent workability while maintaining high transparency. Specifically, when it is used as an optical member, the transparency of the optically easy-adhesive polyester film is preferably a total light transmittance of 85 % or more, more preferably 87% or more, and more preferably 88% or more, 89. More than % is better, more than 90% is especially better

I At the same time, in order to make it high-definition, the content of inactive particles added to the substrate film is preferably as low as possible. Therefore, it is preferable to form a plurality of layers containing particles in the film surface layer alone or to contain particles in the raw material of the film and to include only fine particles in the coating layer. 201102416 In particular, when the polyester film material does not contain inactive particles in the transparency, in order to improve the workability of the film, the aqueous coating liquid contains inorganic and/or heat-resistant polymer particles to form the surface of the coating layer. Ruggedness is an important operation. In addition, when the inorganic material is substantially free of inactive particles, for example, in the case of inorganic particles, when the elements derived from the particles are quantitatively analyzed by fluorescent X-ray analysis, the content is preferably 50 ppm or less, and 10 ppm or less. Good, it is best to check the boundaries below. This is based on the fact that particles are not actively added to the substrate film, and sometimes contaminated by foreign matter, or contaminated by the adhesion on the production line or the production device during the step of producing the raw material resin or film. In the film. When the base film is formed into a multilayer structure, the intermediate layer raw material is substantially free of inactive particles, and the outermost layer contains two kinds of three layers of inactive particles, which can achieve both transparency and workability. . In the case where the moldability is required, a base material film having moldability can also be formed using a polyester resin containing a copolymer component. (Coating layer) An important point of the optically easy-adhesive film of the present invention is to form a dicarboxylic acid having naphthalene dicarboxylic acid as an acid component and a formula (1), and/or formula (2) a polyester resin of the diol component shown and a metal oxide particle (particle A) having a refractive index of 1.7 or more and 3.0 or less, and a coating layer of particles (particle B) having an average particle diameter of 200 nm or more and 700 nm or less. . That is, the present invention can be produced by the following means. (l) HOOC-(CH2)n-COOH (where η is an integer of 4Sn guest 10) -10- 201102416 (2) HO-(CH2)n-〇H (where η is an integer of 4$η$10) (1) Control of Refractive Index of Coating Layer The optically easy-adhesive film of the present invention, the refractive index of the coating layer must be adjusted in the vicinity of the intermediate crucible of the hard coat layer and the substrate polyester film. Since the composition of the resin used in the hard coat layer causes a change in the refractive index of the hard coat layer, it is preferable to adjust the refractive index of the corresponding coating layer, and specifically, the refractive index of the coating layer should be adjusted in the range of 1.6 to 1.7. In this way, the difference in refractive index between the interfaces can be reduced, and the interference spots can be suppressed. Since the refractive index of the coating layer which is generally easy to adhere is low (about 1.50), in the present application, the refractive index of the coating layer is controlled in the above range, and the polyester resin used in the coating layer is naphthalene dicarboxylic acid as the acid. The resin of the component and the metal oxide particles (particles A) having a refractive index of 1.7 or more and 3.0 or less are added in such a manner that adhesion can be obtained and a coating layer having a high refractive index can be formed. These components will be described in detail later. (2) Particles having an average particle diameter of 200 nm or more and 700 nm or less (particle B) The inventors of the present invention have made efforts to review the composition of the coating layer, and as a result, it has been found that particles having an average particle diameter of 200 nm or more and 700 nm or less are added to the coating layer (particles). B) It can have the effect of suppressing interference spots. The inventors of the present invention have inferred the reason why the particle B can exhibit such an effect. Since the particles having a larger average particle diameter are added to the coating layer, the interface between the coating layer and the hard coat layer is uneven. Due to the uneven structure, light is scattered at the interface between the coating layer and the hard coat layer. Therefore, it is assumed that the disordered scattered light can confuse the reflected light generated by the coating layer and the substrate polyester film interface, resulting in the suppression of interference spots. Since the coating layer of the optically easy-adhesive film of the present application has such a configuration, it is not necessary to control the coating thickness as in the prior art, and therefore it is applicable to a wide range of hard coat formations made of various solvents in -11 to 201102416. Coating solution. Further, it has been found that the addition of the particles B to the coating layer has an effect of improving the adhesion to the hard coat layer. This assumption is due to the unevenness of the interface between the coating layer and the hard coat layer, thereby increasing the interfacial area of the coating layer and the hard coat layer. Since the particles B can exhibit the above effects, the thickness of the coating layer is preferably smaller than the average particle diameter of the particles B, and the thickness of the coating layer is preferably less than 1/4 of the average particle diameter, more preferably 1/2 or less. The thickness of the coating layer is preferably 1/15 or more of the average particle diameter of the particles B, more preferably 1/10 or more, and still more preferably 1/7 or more. However, when the thickness of the coating layer is such that the average particle diameter of the particles B is less than 1 / 15 , the transparency may be lowered. (3) The polyester resin containing a long-chain dicarboxylic acid component and/or a glycol component. In the coating layer, a polyester resin having a naphthalene dicarboxylic acid component as described above and a relatively hard polyester resin are used, and larger particles having an average particle diameter of 200 nm or more and 700 nm or less are used. In such a case, it is conceivable that when the production efficiency is increased, the coating layer scratches or the particles fall off when the line speed is increased in the post-processing. Therefore, the inventors of the present invention have found that the polyester resin component is a polyester resin having a long-chain dicarboxylic acid component and/or a glycol component, and the coating layer can remarkably exhibit scratch resistance. In other words, the polyester resin used in the coating layer of the present invention has naphthalene dicarboxylic acid as an acid component, a dicarboxylic acid component represented by the following formula (1), and/or a binary compound represented by the following formula (2). Alcohol content. (1) HOOC-(CH2)n-COOH (where η is an integer of 10) (2) HO-(CH2)n-OH (where η is an integer of 4$nS10) 201102416 As a result, there is a specific The acid component and/or the diol component of the carbon component of the length makes the polyester resin flexible, and even if the large particles are easily retained, scratching of the coating layer and particle detachment can be remarkably suppressed. On the other hand, when η is less than 4, this effect cannot be obtained, so that the coating layer may be scratched. When η is 10 or more, the refractive index of the polyester resin is lowered, so that the effect of suppressing the iridescent color under the fluorescent lamp is insufficient. The upper limit of the above η is preferably 9 or less, and more preferably 8 or less. The scratch resistance of the coating layer can be measured by a measuring method described later. In other words, in the scratching test to be described later, it is preferable to use only a small amount of scratches on the green paper, and it is confirmed that the scratch is better on the green paper (that is, the coating layer described later) There is no scraping in the scratch resistance test). The degree of scraping can be confirmed by visual inspection, fluorescent X-ray analysis, X M A, E S C Α, etc. The term "no scraping" as used herein refers to the fact that when the particles are inorganic particles, more specifically, the inorganic particles are analyzed by fluorescent X-ray on the paper under the detection limit. According to the above aspect, the present invention can maintain adhesion to a hard coat layer, adhesion under high temperature and high humidity (moisture resistance and moisture resistance), and suppress iridescent color under a neon lamp. At the same time, the coating layer has excellent scratch resistance. The constitution of the present invention will be described in more detail below. In the present invention, the coating layer must contain a polyester resin, and the acid component in the polyester resin must contain naphthalene dicarboxylic acid. The naphthalene dicarboxylic acid contained therein allows it to increase the refractive index' and is easy to control the iridescent color under the fluorescent lamp. At the same time, it can also increase its moisture and heat resistance. The naphthalene dicarboxylic acid is preferably 2,6-naphthalene dicarboxylic acid. The ratio of the above naphthalene-13-201102416 diterpenic acid in the polyester resin is preferably 20 mol% or more of the acid component, more preferably 3 mol% or more, more preferably 50 mol% or more, and 6 mol. More than the ear is better. The ratio of the above naphthalene dicarboxylic acid in the polyester resin is preferably not more than 85 mol%, more preferably 85 mol% or less, more preferably 80 mol% or less. The ratio of the above naphthalene dicarboxylic acid in the polyester resin can be appropriately adjusted together with the particles A so that the refractive index of the coating layer is within the above range, but when the amount of the particles A is less than 20 mol%, the amount of the particles A is increased. Reduce the situation of adhesion. Further, when it is at least 9 mol%, the resin adhesion may be lowered. The acid component of the polyester resin of the present invention must contain at least a naphthalene dicarboxylic acid and a dicarboxylic acid component of the following formula (1) and/or a glycol component of the formula (2). The dicarboxylic acid component of the following formula (1) and/or the diol component of the formula (2) in the polyester resin is preferably 1 〇 mol% or more, more preferably 15 mol% or more, and 20 mol%/ The above is better. The dicarboxylic acid component of the following formula (1) and/or the diol component of the following formula (2) in the polyester resin is preferably 70 mol% or less, more preferably 60 mol% or less, and 50 mol%. % is better and below. When the dicarboxylic acid component of the following formula (1) and/or the diol component of the following formula (2) in the polyester resin is less than 1 〇 mol%, there is a coating layer depending on the ratio of the other components. In the case where the scratch resistance is lowered, when the content is 70 mol% or more, the refractive index is lowered, and the effect of suppressing the iridescent color under the fluorescent lamp is poor. The constituents of the polyester resin can be analyzed by NMR or mass spectrometry. (1) HOOC-(CH2)n-COOH (where η is an integer of 1〇) (2) HO-(CH2)n-〇H (where η is an integer of 4$η$10) Formula (1) The dicarboxylic acid component shown may, for example, be adipic acid, sebacic acid or sebacic acid. The glycol component represented by the formula (2) may, for example, be a butanediol or a hexanediol-14-

L S 201102416 and so on. The polyester resin may be water or a water-soluble organic solvent (for example, an aqueous solution containing less than 50% by mass of ethanol, an alkyl cellosolve, a ketone system or an ether system), or an organic solvent (for example, toluene or acetic acid). Ethyl ester, etc.) dissolved or dispersed. When the aqueous coating liquid is used for the polyester resin, a water-soluble or water-dispersible polyester resin can be used, and it is preferred to copolymerize a compound containing a sulfonate or a carboxylate in order to make it water-soluble or water-dispersible. Meanwhile, in the range in which the effects of the present invention can be exhibited, the acid component in the polyester resin may further use terephthalic acid, isophthalic acid, phthalic acid, phthalic anhydride, '1,4-cyclohexane. Dicarboxylic acid, trimellitic acid, pyromellitic acid, dimer acid, sodium 5-sulfoisophthalate, sodium 4-sulfonylnaphthalene-2,7-dicarboxylate, and the like. The glycol component may, for example, be an ethylene oxide adduct of ethylene glycol, propylene glycol, neopentyl glycol, diethylene glycol, 1,4-cyclohexanedimethanol, terephthalic acid or bisphenol A. Wait. The polyester resin is preferably contained in the coating layer in an amount of 30% by mass or more and 90% by mass or less based on the total solid content. 40% by mass or more and 80% by mass or less are more preferable. When the content of the polyester resin is large, the adhesion to the hard coat layer at high temperature and high humidity is lowered. Conversely, when the content is small, the adhesion to the polyester film at normal temperature, high temperature and high humidity is lowered. In the present invention, a crosslinking agent may be formed in the coating layer to form a crosslinked structure. In this case, the adhesion between the high temperature and high humidity can be further improved by the crosslinking agent. Since the formation of the crosslinked structure in the coating layer improves the solvent resistance of the cured film coating liquid to the solvent, it is possible to suitably suppress the halo which is caused by the variation of the thickness of the coating layer. Examples of the crosslinking agent include urea-based, epoxy-based, melamine-based, isocyanate-based, oxazoline-based, and carbodiimide-based. Among them, a melamine-based, an isocyanate-based, an oxazoline-based or a carbodiimide is preferred in terms of the stability of the coating liquid and the effect of improving the adhesion under high-temperature and high-humidity treatment. At the same time, in order to promote the crosslinking reaction, a catalyst or the like may be appropriately used as necessary. The content of the crosslinking agent in the coating layer is preferably 5% by mass or more and 50% by mass or less based on the total solid content. 10% by mass or more and 30% by mass or less are more preferable. When the amount is small, the strength of the resin in the coating layer is lowered, and the adhesion under high temperature and high humidity is lowered. When the amount is large, the flexibility of the resin in the coating layer is lowered, and the normal temperature, high temperature and high humidity are lowered. The closeness. In the coating layer of the present invention, metal oxide particles (particles A) having a refractive index of 1.7 or more and 3.0 or less are required to be contained. Examples of the metal oxide particles include TiO 2 (refractive index 2.7), ZnO (refractive index 2, 0), Sb 203 (refractive index 1.9), Sn02 (refractive index 2_1), Zr02 (refractive index 2_4), and Nb205 (refractive index 2.3). , Ce02 (refractive index 2.2), Ta20 5 (refractive index 2.1), Y2〇3 (refractive index 1.8), La203 (refractive index 1.9), Ιη203 (refractive index 2.0), Cr2〇3 (refractive index 2.5), etc. A composite oxide containing such metal atoms. The coating layer of the present invention contains at least one or two or more of these metal oxides. When the refractive index of the metal oxide is 1-7 or more, it is preferable to adjust the refractive index of the coating layer within the above range. When the refractive index of the metal oxide is 3.0 or less, it is preferable to maintain the transparency of the film. The content of the metal oxide particles in the coating layer is preferably controlled in accordance with the relationship between the refractive index of the metal oxide used and the refractive index of the hard coat layer used, and in particular, the total solid content is 2 It is preferable that the mass% or more is more preferably 5% by mass or more and 70% by mass or less. The content of the metal oxide particles is preferably 7% by mass or more, more preferably 8% by mass or more. The upper limit of the content of the metal oxide particles is preferably 50% by mass or less, more preferably 30% by mass or less, still more preferably 20% by mass or less, and particularly preferably 15% by mass or less. The metal oxide particles may be added in the above range in accordance with the refractive index of the hard coat layer, and the refractive index of the coating layer may be adjusted in the range of 1.5 to 1.7, more preferably in the range of 1.6 to 1.7. When the content of the metal oxide particles is less than 2% by mass or less than 5% by mass, the refractive index of the coating layer may not be easily adjusted to the above range. When the content of the metal oxide particles is more than 70% by mass, the adhesion of the coating layer may be lowered, which is not preferable. The average particle diameter of the metal oxide particles is not particularly limited, but it is preferably from 1 nm to 100 nm at the point of maintaining the transparency of the film. In the present invention, the coating layer must contain particles having an average particle diameter of 200 nm or more and 70 0 nm or less (particle B). For example, (1) cerium oxide, kaolinite, talc, light calcium carbonate, and heavy calcium carbonate. , zeolite, alumina, barium sulfate, carbon black, zinc oxide, zinc sulfate, zinc carbonate, titanium dioxide, satin white, aluminum citrate, diatomaceous earth, calcium citrate, aluminum hydroxide, hydration Inorganic particles such as stone, magnesium carbonate, magnesium hydroxide, (2) propylene or methyl propylene, vinyl chloride, vinyl acetate, nylon, styrene/propylene, styrene/butadiene, polystyrene/ Propylene-based, polystyrene/isoprene-based polystyrene/isoprene resin, methyl methacrylate/butyl methacrylate, melamine, polycarbonate, urea, epoxy Organic particles such as urethane, phenol, diallyl phthalate, and polyester. • 17- 201102416 The average particle size of the aforementioned particles (particle B) is preferably from 200 nm to 700 nm. When the particle diameter is small, the unevenness formed at the interface between the coating layer and the hard coat layer is small, so that the scattering effect is reduced, and the effect of suppressing the iridescent color under the fluorescent lamp is easily insufficient. When the particle diameter is large, the transparency of the coating layer is reduced. The particles (particles B) are preferably not easily aggregated and have a global shape. When the particles are agglomerated, the scattering effect is reduced, and the effect of suppressing the iridescent color under the fluorescent lamp is not easy, and there is also a case of becoming an optical defect. In terms of the effect of light scattering by particles, it is also preferable to use particles of a global shape. At the point of maintaining the transparency of the film, the particles B are preferably colorless and transparent. The average particle diameter of the particles in the coating layer of the present invention can be measured by a transmission electron microscope (TEM) at a magnification of 120,000 times at a magnification of 120,000 times, and the presence or absence of 10 or more particles on the cross section of the coating layer is measured. The maximum particle size is calculated by calculating the average enthalpy. In this case, in order to exclude foreign matter or particle A, it is preferable to select an average enthalpy of particles of 100 nm or more. The content of the particles B in the coating layer is preferably 0.5% by mass or more and 5% by mass or less based on the total solid content. The upper limit of the content of the particles B in the coating layer is preferably 4% by mass or less, more preferably 3% by mass or less, and particularly preferably 2% by mass or less. When the amount is small, the scattering effect is reduced, and the effect of suppressing the rainbow-like color under the fluorescent lamp is insufficient. When the amount is large, not only the transparency of the coating layer is lowered, but also the strength of the film is reduced. In order to improve the leveling property at the time of coating, the coating layer may contain a surfactant for the purpose of defoaming of the coating liquid. The surfactant may be any of a cationic type, an anion type, a nonionic type, or the like, and is preferably a polyfluorene-based, acetylene glycol-based or fluorinated carbon-based surfactant. These surfactants are preferably included in the coating layer -18-201102416 insofar as they do not reduce the effect of suppressing iridescence under fluorescent lamps and the degree of adhesion. In order to impart other functional properties to the coating layer, various additives may be further contained in such a manner that the effect of the iridescent color and the adhesion are not reduced under the xenon lamp. Examples of the above additives include, for example, a fluorescent whitening agent 'plasticizer, a UV absorber, a pigment foam suppressant, an antifoaming agent, a preservative, and the like. In the present invention, a method of forming a coating layer on a polyester film may be carried out by applying and drying a coating liquid of a solvent, a particle or a resin on a polyester film. The solvent is exemplified by an organic solvent such as toluene, water, or a mixed solvent of water and an organic solvent. However, it is preferred to mix a solvent of a water-soluble organic solvent in water at a point of environmental problems. (Optical laminated polyester film) The optical laminated polyester film of the present invention can be provided with a hard coat layer composed of an electron beam or an ultraviolet curable acryl resin-based thermosetting resin on the coating layer described above. The acrylic resin which is hardened by electron beam or ultraviolet light has an acrylic base, and examples thereof include polyester tree ether resin having a relatively low molecular weight, acrylic resin, epoxy resin, urethane resin, and alkyd. An oligomer or prepolymer of a tree acetaldehyde resin, a polybutadiene resin, a polythiol polyene resin, a (meth) acrylate such as a polybasic compound, or a diluent (ethyl) acrylate a monofunctional or polyfunctional monomer such as ethylhexyltoluene (meth)acrylate, methylxylene or N-vinylpyrrolidone, such as trimethylolpropane tris(meth)acrylic acid The range of honey light granules, the method of water-soluble alone or polyester film or bismuth oxy-acid ester, polyester, spirulinol, etc., ester, di-monomer 'di- -19- 201102416 alcohol (meth) acrylate, tripropylene Glycol (meth) acrylate, diethylene glycol (meth) acrylate, neopentyl alcohol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, 1,6-hexyl Diol (meth) acrylate, neopentyl glycol di (meth) acrylate, and the like. Further, in the electron beam or ultraviolet curable resin, a photopolymerization initiator in the above resin may be used, for example, acetophenone, diphenyl ketone, Michler's benzoyl benzoate, or α. - α-amyloxime ester, tetUmethylthiraum monosulfide, 9-oxo-sulfur thioxanthone, and mixed photo-sensitizers such as n-butylamine, III Ethylamine, tri-n-butylphosphine, etc. are used. Further, the siloxane-based thermosetting resin can be produced by mixing an organic decane compound alone or in combination of two or more kinds in the presence of an acid or a base catalyst, followed by hydrolysis and condensation reaction. In particular, when low-reflection is used, one or more kinds of fluorinated decane compounds are mixed, and then hydrolyzed and condensed, and the improvement in low refractive index and stain resistance is further improved. (Production of the optically easy-adhesive polyester film) The method for producing an optically easy-contact polyester film of the present invention will be described below by taking a polyethylene terephthalate (hereinafter abbreviated as PET) film as an example, but Of course, it is not limited to this. After the PET resin is sufficiently vacuum-dried, it is charged into an extruder, and the molten PET resin of about 280 ° C is melt-pressed into a sheet by a T-die through a rotary cooling roll, and then cooled and hardened by an electrostatic piezoelectric method. Into the unstretched PET sheet. The aforementioned unstretched PET sheet may be formed into a single layer or may be formed into a composite layer by a simultaneous extrusion method. Further, it is preferred that the PET resin contains substantially no inactive particles. In the case of the stratified composition -20-201102416, the intermediate layer is substantially free of inactive particles, and is composed of only two kinds of three layers containing inactive particles in the outermost layer, and is excellent in both transparency and workability. The thus produced unstretched PET sheet was further heated to a temperature of 80 to 120 ° C to extend 2.5 to 5.0 times in the longitudinal direction to form a single length extending PET film. Thereafter, the end of the film is fixed by a fixing clip, and heated to a hot air heating zone of 70 to 140 ° C, extending 2.5 to 5.0 times in the width direction. Continue to feed it to a heat treatment zone heated to 160 to 240 ° C for 1 to 60 seconds to complete the crystallographic alignment. ^ At any stage of the manufacturing step, the coating layer is formed by coating a coating liquid on at least one side of the PET film. However, there is no particular problem in that the coating layer forms a PET film on both sides. The solid content of the resin composition in the coating liquid is preferably 2 to 35 % by weight, particularly preferably 4 to 15 % by weight. The method in which the coating liquid is coated on the PET film can be any method generally known. For example, reverse roll coating, gravure printing method, contact coating method, die casting coating method, roller brush coating method, spray coating method, pneumatic blade coating method, wire bar coating method, and pipe doctor coating method (pipe Doctorbladecoating) ), infiltration method, curtain coating method, and the like. These methods can be applied individually or in combination. In the present invention, the coating layer is coated on the PET film which has not been stretched or extended in a single length direction, and is dried, and then dried at least in a single length direction and then heat-treated. In the present invention, the thickness of the finally formed coating layer is from 20 to 350 nm, and the coating amount after drying is preferably from 0. 02 to 0.5 g/m2. When the coating amount of the coating layer is -21 to 201102416 and less than 0.02 g/m2, there is almost no effect on the adhesion, and the suppression of the iridescent color under the fluorescent lamp is also insufficient. On the other hand, when the coating amount is more than 0.5 g/m2, the suppression of the iridescent color under the fluorescent lamp is also insufficient. The coating layer of the optically-advancing polyester film produced in the present invention has good adhesion to the hard coat layer formed of an electron beam or an ultraviolet curable acryl resin or a siloxane-based thermosetting resin. At the same time, it has good adhesion strength in addition to optical applications. Specifically, for example, a photosensitive layer as a photo, a diazo photosensitive layer, a thin pad layer, a magnetic layer, an inkjet printing layer, a cured film layer, an ultraviolet curing resin, a thermosetting resin, a printing ink, a UV photosensitive ink, a dried laminate, and A film made by extruding a laminate or the like, a metal, an inorganic substance, and an oxide thereof by vacuum evaporation, electron beam evaporation, sputtering, ion deposition, CVD (chemical vapor deposition), plasma polymerization, or the like Layer, organic diffusion preventing layer, and the like. (Production of the laminated polyester film for optics) The method for producing the laminated polyester film for optics of the present invention will be described below by way of an example of a PET film, but it is of course not limited thereto. The electron beam or the ultraviolet curable acryl resin or the decane-based thermosetting resin is applied to the surface of the coating layer of the above-mentioned optical easy-adhesive polyester film. When the coating layer is formed on both sides, it must be applied on at least one of the coating layers. The coating liquid is not required to be specifically diluted, but the viscosity, wettability, and film thickness of the coating liquid are not particularly problematic if it is diluted with an organic solvent. The coating layer is coated on the film by the above-mentioned coating liquid, and then dried according to the necessity of drying, and then the coating layer is hardened under the curing conditions of the coating liquid, and the coating layer is hardened to form a hard coating. Floor. The thickness of the hard coat layer in the present invention is preferably from 1 to 15 μm. When the thickness of the hard coat layer is less than 1 μηι, the hard coat layer has almost no effect on chemical resistance, scratch resistance, and antifouling property. On the other hand, when the thickness is more than 15 μm, the flexibility of the hard coat layer is reduced, so that the possibility of occurrence of cracks or the like is increased. The optical laminated polyester film produced in the present invention can be used for a wide range of applications, and in particular, an antireflection film can be formed on the upper layer thereof to form a good antireflection film. The antireflection film can be formed into a single layer or a plurality of layers, such as 高ηΟ, TiO2, Ce〇2, Sn02, ZrQ2, or the like, or an inorganic material such as MgF2 and SiO2 having a low refractive index, and a metal material. These layers may be formed by vapor deposition, sputtering, plasma CVD (chemical vapor deposition), or the like, or a coating layer formed of a resin composition containing a high refractive index or a low refractive index inorganic material or a metal material. Single or multiple layers. EXAMPLES Hereinafter, the present invention will be specifically described by way of Examples and Comparative Examples, but the present invention is of course not limited to the examples below. The evaluation methods used in the present invention are as follows. (1) Intrinsic viscosity According to JIS K7367-5, solvent phenol (60% by mass) and l5l, 2,2-tetrachloroethane (40 mass ° / 〇 mixed solvent at 30 ° C (2) The refractive index of the refractive index hard coat layer is determined by an Abbe refractometer according to the method of JIS K7142 according to the method of JIS K7142. -23- 201102416 Refractive index of particle A The particles a which are dried and hardened at 90 ° C are suspended and floated in various liquids having different refractive indices at 25 ° C, and then the refractive index of the most transparent liquid is determined by the Abbe refractometer. (3) Average particle diameter The optical laminated polyester film sample was first embedded in a visible light-curable resin (D-800, manufactured by JEOL DATUM Co., Ltd.), and hardened by visible light at room temperature. The block is then made into an ultra-thin slice with a thickness of 70 to 100 nm by means of an ultramicrotome with a diamond knife, and then dyed in osmium tetroxide vapor for 30 minutes. The dyed ultrathin section is then penetrated by electrons. Microscope (manufactured by JEOL Ltd., TEM 2 0 10) The photograph is taken in section and the magnification of the photograph is set to be in the range of 1 〇, 〇〇〇 to 100, and 〇〇〇 times. The magnification in this embodiment is 80,000 times (acceleration voltage 200 kv). When the average particle diameter of the particles A is measured, 10 or more particles having a particle diameter of about 100 nm or more are selected from the photograph of the electron microscope, and the maximum particle diameter of the particles is measured, and the average enthalpy is calculated. And foreign matter and the like are not the particles B in this application, so particles having a small particle size are excluded. (4) Interfering patch improvement (i-color) First cut 10 cm (width direction of the film) xl5 cm (length of the film) The optical film for the area is formed into a sample film, and a enamel bright tape (Nitto Denko, vinyl tape No. 21; ochre) is attached to the reverse side of the hard coat layer of the prepared sample film. Then, the cured film of the sample film is faced upward, and is irradiated with a 3-wavelength daylight color (International Palook fluorescent tube, F.L15EX-N 15W) light source, and then the diagonally upwardly reflects the strongest relative position of the visual reflection (with Light source -24 - LS i 201102416 Distance is 40 to 60 cm, Observe the vertical line on the film surface from 15 to 45. Angle. The results of the visual observation were evaluated according to the following criteria. The observation was performed by 5 people who were proficient in the evaluation, and the evaluation was evaluated by the most evaluation. In the case of two equals, an intermediaries divided into three grades are used. For example, each of ◎ and 〇 is 2 people, △ is 1 person, 〇 is used, ◎ is 1 person, 〇 and 8 are 2 When people use 〇, ◎ and △ each are 2 people, and when 〇 is 1 person, 〇 is used. ◎: There is no iridescent color when viewed from all angles: Iridescent color is only visible when observed at some angles △: Iridescent color X is visible: Iridescent color is clearly visible (5) On the optical laminated polyester film, the surface of the hard coat layer was cut by a dicing guide at intervals of 2 mm so as to penetrate the hard coat layer to the base film to form one square lattice. Secondly, the adhesive tape (made of Nisshin Co., Ltd., tape No. 40 5; 24 mm wide) was attached to the top of the square lattice cutting line, and then rubbed with an eraser to completely close. Thereafter, the cellophane adhesive tape is vertically pulled away from the surface of the hard coat layer of the optical laminated polyester film, and the number of the lattice peeled off from the surface of the hard coat layer of the optical laminated polyester film is visually calculated, and the following formula is used. The adhesion between the hard coat layer and the substrate film was calculated. Partial strippers in the grid are also calculated on the stripped grid and are rated on the basis of the following criteria. Adhesion (%) = (1 - number of stripped grids / 100) X 100 ◎ : 1 0 0 % 〇: 99 to 90% -25- .201102416 △ : 90 to 70% X ·· 69 to 〇% ( 6) Moisture and heat resistance First, the optical laminated polyester film is placed in a high-temperature and high-humidity bath at 60 eC and 95 RH % for 500 hours, and then the optical laminated polyester film is taken out and placed in the chamber. Leave it under constant humidity for 12 hours. Thereafter, the adhesion between the hard coat layer and the base film was measured by the method of the above (5), and the following criteria were evaluated. ◎ -· 10 0% 〇: 99 to 90% △ : 90 to 70% X : 6 9 to 0 % (7) The scratch resistance of the coating layer is determined by the friction fastness tester (Da Rong Scientific Seiki Co., Ltd., On the RT-200), place an optically easy-adhesive polyester film of 3 cm (the width direction of the film) of 20 cm (the length direction of the film), and then load the weight (3 xg) load-bearing friction head (2 cm x 2 cm, 200 g) The contact portion with the sample film was rubbed back and forth 10 times at a speed of 10 cm, one round back and forth for 20 seconds using an aluminum foil (thickness 80 μηι, calculated average surface roughness 0.03 μηι). ◎: It was confirmed that there was no black pad paper. Scratch 〇: According to the position, it can be confirmed that the black pad paper is slightly scraped △: It can be confirmed that the black pad paper is slightly scraped off X: It can be clearly confirmed that the black pad paper is scraped off and the prepared sample film is fixed. On the black pad, visually confirm whether there is any scraping. -26- 201102416 In addition, the above calculated average surface roughness was measured by the non-contact surface shape measuring system (VertScan R5 5 0 H-M1 00) under the following conditions. (Measurement conditions) • Measurement method: WAVE method • Mirror: 50 times • 0.5 X. Tube lens • (1) The total light transmittance of the optically easy-to-adhere polyester film made of the total light transmittance of the optically easy-to-adhere polyester film is based on JIS K 7105 "Optical Properties Test of Plastics" Method. (Polymerization of Polyester Resin) First, 302.9 parts by mass of dimethyl 2,6-naphthalenedicarboxylate, dimethyl-, was added to a stainless steel double kettle containing a stirrer, a thermometer, and a partial circulation cooler. 47.4 parts by mass of sodium 5-sulfonic acid isophthalate, 198.6 parts by mass of ethylene glycol, 118.2 parts by mass of hexanediol, and 4 parts by mass of tetra-n-butyl titanate, and further at 160 ° C to 22 0 ° C The lactide reaction was carried out for 4 hours. Thereafter, 121.4 parts by weight of sebacic acid was further added to carry out an esterification reaction, followed by raising the temperature to 255 ° C and gradually decompressing the reaction system, followed by a reaction under reduced pressure of 30 Pa for 1 hour. The copolymerized polyester resin (A-1) was prepared in 30 minutes. The resulting copolymerized polyester resin was light yellow transparent. The copolymerized polyester resin (A_2) to (Al) of the other composition was prepared in the same manner. 1) Composition and weight average molecular weight of these copolymerized polyester resins measured by iH-NMR The results are shown in Table 1. -27- 201102416 Composition (4)%) A-12 1 1 1 00 ΓΟ 1 1 1 (N 1〇50000 A-11 〇〇1 1 〇1 1 幽45000 A-10 1 1 00 Sun 1 1 55000 A-9 1 vo Sun 1 1 〇 1 48000 〇〇< 1 $ cn 1 1 48000 A-7 ON 1 ΓΛ 1 1 1 50000 A-6 〇\ 1 ΙΟ c^iv〇r —^ 1 〇\ m 〇50000 A-5 σ\ 1 m Ό CN 1 〇〇(N 〇48000 A-4 i〇CS 00 ν〇1 1 〇〇(N 46000 < CN CN 〇00 00 VO 卜 1 1 (N 46000 A-2 l〇1 oo CN 〇〇1 1 1 1 46000 < CN ( 1 1 QO cn 1 1 1 48000 naphthalene dicarboxylic acid terephthalic acid isophthalic acid azelaic acid tetradecane Diacid 5-sulfonate sodium isophthalate sodium 11 Κ) 鮏II N3 11 neopentyl glycol butanediol hexanediol dodecanediol weight average molecular weight dicarboxylic acid component diol component physical property

201102416 (Adjustment of Polyester Water Dispersion) 20 parts by mass of polyester resin (Al) and 15 parts by mass of ethylene glycol tert-butyl ether are added to a reactor including a stirrer, a thermometer, and a circulation device, and then 110 The resin was dissolved by heating and stirring at °C. After the resin was completely dissolved, 65 parts by mass of water was gradually added while stirring in the above polyester solution. After the addition, the solution was stirred while being allowed to cool to room temperature to obtain a milky white polyester aqueous dispersion (B-1) having a solid content of 20% by mass. The polyester resin (A-2) to (A-12) is used in place of the polyester resin (A-1), and the aqueous dispersion is produced in the same manner to prepare aqueous dispersions (B-2) to (B-12). . (Polymerization of Block Polyisocyanate Crosslinking Agent) In a flask containing a stirrer, a thermometer, and a circulation cooler, 100 parts by mass of hexamethylene diisocyanate is added as a polyisocyanate compound having a trimeric isocyanate structure (Asahi Kasei Chemicals) Company-made, Tana, TPA, Duranate TPA) raw materials, then added 55 parts by mass of propylene glycol methyl ether acetate, polyethylene glycol methyl ether (average molecular weight 750) 30 parts by mass, and then under nitrogen, 70 ° C The reaction was continued for 4 hours. Thereafter, the temperature of the reaction liquid was lowered to 50 t, and 4 parts by mass of methyl ethyl ketone oxime was added dropwise thereto. The reaction liquid was measured by infrared absorption spectroscopy, and it was confirmed that the absorption spectrum of the isocyanate group disappeared, and then a block polyisocyanate aqueous dispersion (C) having a solid content of 75% by mass was obtained. (Polymerization of oxazoline-based crosslinking agent) 58 parts by mass of aqueous solvent ion-exchanged water and 58 parts by mass of isopropyl alcohol were added to a flask containing a thermometer, a nitrogen gas introduction tube, a circulation cooler, a dropping funnel, and a stirrer The mixture was mixed with 4 times by mass of a polymerization initiator (2,2,-azobis(2-methylpropanepropane) dihydrochloride). Thereafter, 16 parts by mass of a polymerizable unsaturated monomer 2·isopropenyl-2-carbazole having an oxazoline group was placed in a dropping solution of -29·201102416, and methoxypolyethylene glycol acrylate (B) The average addition of diol to the molar number of .9 moles, manufactured by Shin-Nakamura Chemical Co., Ltd.), 32 parts by mass, and 32 parts by mass of methyl methacrylate, and then under nitrogen, 70 "c, within 1 hour Drop in. After the completion of the dropwise addition, the reaction solution was further stirred for 9 hours, and after cooling, a water-soluble resin (D) having an oxazoline group having a solid concentration of 40% by mass was obtained. (Polymerization of carbodiimide crosslinking agent) 168 parts by mass of hexamethylene diisocyanate and polyethylene glycol methyl ether (M400, average molecular weight of 400) were added to a flask containing a stirrer, a thermometer, and a circulating cooling tube. 220 parts by mass, stirred at 120 ° C for 1 hour, and then added 26 parts by mass of methane diisocyanate-4,4'-dicyclohexyl ester and 3-methyl-1 as a carbodiimidation catalyst - phenyl-2 -cyclophosphene-1-oxygen (3.8 parts by weight of 2% by weight of total isocyanate), and the reaction was further stirred under nitrogen gas at 185 ° C for 5 hours. The reaction solution was further reacted until the absorption wave of the wavelength 2200 to 2300 criT1 was confirmed by infrared absorption spectrum measurement. This was cooled to 60 ° C, and 567 parts by mass of ion-exchanged water was added thereto to prepare a carbodiimide water-soluble resin (E) having a solid concentration of 40% by mass. Example 1 (1) Adjustment of coating liquid The following coating agents were mixed to prepare a coating liquid. The particle A is Sn02 having a refractive index of 2.1, and the particle B is a cerium oxide particle having an average single particle diameter of about 500 nm. Water 4 0.1 6质量% -30- 201102416 Isopropanol 3 0.00% by mass

Polyester Aqueous Dispersion (B -1 ) Block Polyisocyanate Aqueous Dispersion (C) Particle A 18· 19% by mass 2 · 0 8质量% 9 · 3 7质量% (Taomace S-8, manufactured by Doki Chemical Co., Ltd. , Solid content concentration: 8% by mass) Particles Β 0.17% by mass (Seahoster KEW50, manufactured by Nippon Shokubai Co., Ltd., solid content concentration: 15% by mass) 0 · 0 3 mass% Polyoxonated surfactant (solid content concentration: 100%) (2) Production of optically easy-adhesive polyester film First, the PET resin pellet having an intrinsic viscosity of 0.62 dl/g as a film raw material polymer and containing no particles in the raw material was decompressed at 133 Pa at 135 °C. Dry for 6 hours. Thereafter, it was placed in an extruder, melt-extruded into a sheet shape at about 280 ° C, and then rapidly cooled and hardened by electrostatic piezoelectric method on a rotary cooling roll having a surface temperature of 20 ° C. The PET sheet was not stretched. Further, the unrolled PET sheet was heated to 1 ° C by a heated roller group and an infrared heater, and then stretched 3.5 times in the longitudinal direction by a roller group having a different rotation speed difference to form a single length extending PET film. Next, the coating liquid was applied to one side of the PET film by a roll coating method, and then dried at 80 ° C for 20 seconds. The amount of the coating after drying (after the two-axis extension) was adjusted to 0.15 g/m2. After that, it was extended to 4.0 times in the width direction at 120 ° C, and then heated at 23 CTC for 0.5 second in a state where the length in the film width direction was fixed, and then subjected to a relaxation treatment in the width direction at 2 3 0 ° C for 1 sec. It was relaxed by 3% to prepare an optically easy-adhesive polyester film having a thickness of 1 μm. -31-201102416 The thickness of the coating layer was observed by an electron microscope to be 12 nm. The results of the evaluation are shown in Table 2. (3) Production of an optically laminated polyester film on the surface of the coating layer of the above-mentioned optical easily-adhesive polyester film, @The following composition is used for the formation of a hard coat layer The coating liquid (C-1) was subjected to #10 wire-bar coating, and dried at 7 ° C for 1 minute to remove the solvent. Next, the film coated with the hard coat layer was further irradiated with ultraviolet rays of 300 mJ/cm 2 by a high pressure mercury lamp to prepare a hard coated optical laminated polyester film having a thickness of 5 μm. The refractive index of the hard coat layer is 1.55. Coating solution for forming a hard coat layer (C-1) 48.47% by mass of isopropanol 21.25 mass% of dipentaerythritol hexaacrylate (A-DPH, manufactured by Shin-Nakamura Chemical Co., Ltd.) Polyethylene glycol dipropionate ( Polyethylenediacrylate) 5 · 6 7 mass% (manufactured by Shin-Nakamura Chemical Co., Ltd., A-400)

Zr02 sol 23.61% by mass (manufactured by Nissan Chemical Industries, Inc., OZ-30M, solid content concentration: 30% by mass) Photopolymerization initiator 1.00% by mass (Cigar Chemical Co., Ltd., Irgacure 184) Comparative Example 1 In addition to dispersing polyester water The liquid laminated polyester film was produced as in Example 1 except that the liquid was changed to B-1 0. Comparative Example 2 An optical laminated polyester film was produced as in Example 1 except that SiO 2 was changed to a refractive index of 1.46 (Nissan Chemical Industry Co., Ltd., 32-201102416, Snowtex ZL, solid content concentration: 40% by mass). . Comparative Example 3 An optical laminated polyester film was produced as in Example 1 except that the particles B were removed. Comparative Example 4 An optical laminated polyester film was produced as in Example 1 except that the particles B were removed and changed to use the coating liquid for forming a hard coat layer (C_2). The hard coat layer has a refractive index of 1.55. Coating liquid for forming a hard coat layer (C-2) methyl ethyl ketone 39.00 mass% toluene 9.4 7 mass% 2 1.2 5 mass% 5.6 7 mass% 2 3.6 1 mass% dipentaerythritol hexaacrylate (manufactured by Shin-Nakamura Chemical Co., Ltd., A-DPH) Polyethylene glycol diacrylate (A-400, manufactured by Shin-Nakamura Chemical Co., Ltd.) Sn02 Sol (made by Ishihara Sangyo Co., Ltd., FSS-10T, solid concentration: 30% by mass) Photopolymerization initiator 1 · 0 0 (% by mass) (Irgacure 184, manufactured by Ciba Specialty Chemical Co., Ltd.) Further, as in Example 1, the laminated polyester film for optics was produced. 1 - 33 - 201102416 Comparative Example 6 An optical laminated polyester film was produced as in Example 1 except that the particles B were changed to organic particles having an average particle diameter of 2000 nm (Epostar-MS, manufactured by Nippon Shokubai Co., Ltd.). Comparative Example 7 An optical laminated polyester film was produced as in Example 1 except that the aqueous polyester dispersion was changed to B -1 1 . Comparative Example 8 An optical laminated polyester film was produced as in Example 1 except that the aqueous polyester dispersion was changed to B -1 2 . Example 2 An optical laminated polyester film was produced as in Example 1 except that the coating liquid was changed as follows. 4 4 · 5 4 mass% 3 0.0 0 mass% 1 2.2 1 mass% 3.6 7 mass % 9 · 3 8 mass % water isopropyl alcohol polyester water dispersion (B-1)

Block polyisocyanate aqueous dispersion (C) Particle A (Ceram ace S-8, manufactured by Toki Chemical Co., Ltd., solid concentration: 8 mass%. / 〇) Particle B 0 · 1 7 mass% (made by Nippon Shokubai Co., Ltd., Seahoster KEW50, solid content concentration: 15% by mass) Polyoxygenated surfactant 0.03 mass% (solid content concentration: 100%) S i. -34 - 201102416 Example 3 Example 1 except that the coating liquid was changed as follows The operation is carried out to form an optical laminated polyester film. 3 7.2 9 mass% 3 0.0 0 mass% 2 2.0 9 mass% 1 · 04 mass. /〇 9.3 8 mass% water isopropanol polyester water dispersion (B-1)

Block polyisocyanate aqueous dispersion (C) Particle A (Ceramace S-8, manufactured by Toki Chemical Co., Ltd., solid content concentration: 8 mass%) Particle B 0.17 mass% (made by Nippon Shokubai Co., Ltd., Seahoster KEW50, solid concentration 15 mass) %) Polyoxymethylene surfactant 0.03 mass% (solid content concentration: 100%) Example 4 An optical laminated polyester film was produced as in Example 1 except that the coating liquid was changed as follows. 3 5.7 6 mass% 3 0 . 〇 〇 mass% 2 4.1 7 mass% 0.4 9 mass% 9.3 8 mass% water isopropyl alcohol polyester water dispersion (B-1)

Block polyisocyanate aqueous dispersion (C) Particle A (Ceramace S-8, manufactured by Toki Chemical Co., Ltd., solid content concentration: 8 mass%) Particle B 0 · 17% by mass (made by Nippon Shokubai Co., Ltd., Seahoster KEW50, solid content) Concentration 15% by mass) -35- 201102416 Polyoxo-based surfactant 0.03% by mass (solid content concentration: 100%) Example 5 Changed particle B to use cerium oxide particles having an average particle diameter of 230 nm (Fuso Chemical An industrial laminated polyester film was produced as in the Example except that the product was manufactured by Industrial Co., Ltd., Quartron PL-20 (solid content concentration: 24% by mass). Example 6 The operation of Example 1 was carried out to prepare an optical laminated polymer, except that the particles B were changed to propylene resin particles (GanzPerle PM-030, manufactured by Ganz Chemical Co., Ltd., solid content concentration: 41% by mass) having an average particle diameter of 300 nm. Ester film. Example 7 An optical laminate was produced as in Example 1 except that the particles B were changed to use cerium oxide particles (MP4540M, manufactured by Daicel Chemical Industries, Ltd., solid concentration: 4 〇 mass%) having an average particle diameter of 450 nm. Polyester film. Example 8 An operation was performed as in Example 1 except that the particles B were changed to use crosslinked polystyrene particles having an average particle diameter of 700 nm (Glossdell 207-S, manufactured by Mitsui Chemicals Co., Ltd., solid content concentration: 53% by mass). A laminated polyester film is used. Example 9 The particle A was changed to Zr02 (ZR-40BL, manufactured by Nissan Chemical Industries Co., Ltd., solid content concentration: 40% by mass), and the particle B was changed to use cerium oxide particles having an average particle diameter of 230 nm (Fusang). An organic laminated polyester film was produced as in Example 1 except that the Chemical Industry Co., Ltd., Quartron PL-20 (solid content concentration: 24% by mass). -36-201102416 Example 1 ο Change of particle size to Zr02 (ZR-40BL, manufactured by Nissan Chemical Industries Co., Ltd., solid content concentration: 40% by mass) and particle B to acryl resin using an average particle diameter of 30 Onm An organic laminated polyester film was produced as in Example 1 except that the particles (manufactured by Ganz Chemical Co., Ltd., Ganz Perle PM-03 0, solid content concentration: 41% by mass). Example 1 1 In addition to the change of the particle A to Zr〇2 (manufactured by Nissan Chemical Industries, Ltd., ZR-40BL, solid content concentration: 40% by mass), the particle B was changed to use an average particle diameter of 450 nm. In the same manner as in Example 1, except that the ruthenium particles (manufactured by Nissan Chemical Industries, Inc., MP4540M, solid content concentration: 40% by mass) were used, an optical laminated polyester film was produced. Example 1 2 In the same manner as in Example 1, except that the particle A was changed to Zr 〇 2 (ZR-40BL, manufactured by Seiko Chemical Co., Ltd., solid content concentration: 40% by mass) using a refractive index of 2.4, Ester film. Example 1 3 The particle A was changed to Zr〇2 (ZR-40BL, manufactured by Nissan Chemical Industries, Ltd., solid content concentration: 40% by mass), and the particle B was changed to a crosslinked polycondensation using an average particle diameter of 700 nm. The styrene particles (manufactured by Mitsui Chemicals Co., Ltd., glossdell 207-S, solid concentration: 53 mass%) were used to prepare an optical laminated polyester film as in Example 1. Example 1 4 Changed particle A to use refractive index 2.7 Tl〇2 (Ishihara Industry Co., Ltd. -37-201102416, TTO-W-5, solid concentration: 30% by mass), and particle B changed to cerium oxide particles with an average particle size of 230 rim (made by Fuso Chemical Industry Co., Ltd.) An optical laminate polyester film was produced as in Example 1 except that the Quartron PL-20 (solid content concentration: 24% by mass). Example 1 5 The particle A was changed to use TiO 2 having a refractive index of 2.7 (TTO-W-5, manufactured by Ishihara Sangyo Co., Ltd., solid content concentration: 30% by mass), and the particle B was changed to use propylene resin particles having an average particle diameter of 300 nm ( An organic laminated polyester film was produced as in Example 1 except that Ganz Chemical Co., Ltd., Ganz Perle PM-0 30, solid content concentration: 41 mass%. Example 1 6 In addition to the change of the particle A to the use of Ti 〇 2 having a refractive index of 2.7 (manufactured by Ishihara Sangyo Co., Ltd., TT0-W-5, solid content concentration: 30% by mass), the particle B was changed to use an average particle diameter of 450 nm. An optical laminated polyester film was produced as in Example 1 except that sand particles (manufactured by Nissan Chemical Industries, Ltd., MP4540M, solid content concentration: 40% by mass) were used. [Example 1 7] The particle layer A was changed to a Ti 〇 2 (TTO-W-5, solid content concentration: 30% by mass) having a refractive index of 2.7. Ester film. Example 1 8 granulation. The tampering was changed to Ti 〇 2 (Toshi-Industry Co., Ltd., TTO-W-5, solid content concentration: 30% by mass) using a refractive index of 2.7, and the particle B was changed to use an average particle diameter of 7 The crosslinked polystyrene particles of 00 nm (manufactured by Mitsui Chemicals Co., Ltd., -38-.201102416 gIossdell 207-S, solid content concentration: 53 mass%) were used to prepare an optical laminated polyester film as in Example 1. . [Example 1] An optical laminated polyester film was produced as in Example 1 except that the coating liquid (C-2) for forming a hard coat layer was used. Example 20 An optical laminated polyester film was produced as in Example 除 except that the block polyisocyanate aqueous dispersion (C) was changed to use a water-soluble resin (D) having an oxazoline group. Example 2 1 An optical laminated polyester film was produced as in Example 1 except that the block polyisocyanate aqueous dispersion (C) was changed to use the carbodiimide water-soluble resin (E). Example 22 An optical operation was carried out as in Example 1 except that the block polyisocyanate aqueous dispersion (C) was changed to use melamine resin (Beckamine M-3, manufactured by Dainippon Ink Co., Ltd., solid content concentration: 60% by mass). A laminated polyester film is used. Example 2 3 An optical laminated polyester film was produced as in Example 1 except that the aqueous polyester dispersion was changed to use B-2. Example 24 An optical laminated polyester film was produced as in Example 1 except that the aqueous polyester dispersion was changed to use B-3. Example 2 5 - 39 - • 201102416 An optical laminated polyester film was produced as in Example 1 except that the polyester aqueous dispersion was changed to use B-4. Example 2 6 An optical laminated polyester film was produced as in Example 1 except that the aqueous polyester dispersion was changed to use B-5. Example 2 7 An optical laminated polyester film was produced by the operation of Example 1 except that the aqueous polyester dispersion was changed to use B-6. Example 2 8 An optical laminated polyester film was produced as in Example 1 except that the aqueous polyester dispersion was changed to use B-7. Example 2 In addition to changing the aqueous polyester dispersion to use B Other than -8, the other laminated film of the optical film was produced as in Example 1. Example 3 An optical laminated polyester film was produced as in Example 1 except that the aqueous polyester dispersion was changed to use B-9. Example 3 1 An optical laminated polyester film was produced as in Example 1 except that the coating liquid was changed as follows. 40·16% by mass 3 0 · 〇〇% by mass 24.27% by mass 2.78% by mass Water isopropyl alcohol aqueous dispersion (B-1) Block polyisocyanate aqueous dispersion (C) -40- 201102416 Particle A 2.5 9 (% by mass) (TTO-W-5, solid content concentration: 30% by mass) Interfacial surfactant 〇, 〇3 mass% (solid content concentration: 100%) Example 3 2 An optical laminated polyester film was produced as in Example 1 except that the coating liquid was changed as follows. 40.16 mass% 3 0 · 0 0 mass% 2 4.9 7 mass% 2.8 6 mass% 1. 8 1 mass% water isopropanol polyester water dispersion (B-1)

Block polyisocyanate aqueous dispersion (C) Particle A (TTO-W-5, manufactured by Ishihara Sangyo Co., Ltd., solid content concentration: 30% by mass) Particle B 0 · 17% by mass (Seahoster KEW50, manufactured by Nippon Shokubai Co., Ltd., solid type) Partial concentration: 15% by mass) Polyoxymethylene surfactant 0.03 mass% (solid content concentration: 100%) Example 3 3 An optical laminated polyester film was produced as in Example 1 except that the coating liquid was changed as follows. Water 4 0.16% by mass Isopropanol 30.00% by mass -41- 201102416 Polyester aqueous dispersion (B-1) Block polyisocyanate aqueous dispersion (C) 2 5.9 1% by mass 2.9 6% by mass

Particle A 〇 . 7 7 mass% (made by Ishihara Sangyo Co., Ltd., TTO-W-5, solid concentration: 30% by mass)

Particle B 〇17 mass% (Seahoster KEW50, manufactured by Nippon Shokubai Co., Ltd., solid content concentration: 15% by mass) 0.0 3 mass% Polysiloxane surfactant (solid content concentration: 100%) Optical composite layer of Comparative Example 1 The ester film is a naphthalene dicarboxylic acid which does not contain an acid component in the polyester resin. Therefore, the refractive index of the coating layer is lowered, so that the effect of suppressing the iridescent color under the fluorescent lamp is insufficient. In the optical laminated polyester film of Comparative Example 2, the particles A were made of cerium oxide having a low refractive index. Therefore, the refractive index of the coating layer is lowered, so that the effect of suppressing the iridescent color under the fluorescent lamp is insufficient. The optically laminated polyester film of Comparative Example 3 does not contain particles B having an average particle diameter of 200 nm or more and 700 nm or less. Therefore, there is no light scattering effect on the interface of the hard coat layer/coating layer, so that the effect of suppressing the iridescent color under the fluorescent lamp is not good. At the same time, since the unevenness of the interface cannot be formed by the particles B, the contact area with the hard coat layer is reduced, so that the adhesiveness, moisture resistance and heat resistance are not good. The optically laminated polyester film of Comparative Example 4 does not contain particles B having an average particle diameter of 200 nm or more and 700 nm or less. Further, it was changed to use a coating liquid (C-2) for forming a hard coat layer. Since C-2 partially dissolves or swells the coating interface, it not only destroys the design of the interface of the hard coat layer/coating layer, because the interface of the hard coat layer/coating layer 42-201102416 has no light scattering effect, and also inhibits it under the fluorescent lamp. The effect of the rainbow color is not good. Further, since the interface of the particles B cannot be formed flat and the contact area with the hard coat layer is reduced, the adhesion and the resistance are also poor. The optically laminated polyester film of Comparative Example 5 contains particles having a particle diameter of 100 nm. Therefore, the boundary scattering effect of the hard coat layer/coating layer is made to suppress the iridescent color under the fluorescent lamp. At the same time, since the unevenness of the interface formed by the particles B and the contact area with the hard coat layer, the adhesiveness, moisture resistance and heat resistance of the optical laminated polyester film of Comparative Example 6 include the particle B particle diameter of 2000 nm. The particles are low in adhesion. The optically easy-to-adhere polyester film of Comparative Example 7 does not contain a long-chain dicarboxylic acid component and a long-chain glycol component in the polyester resin component. The scratch resistance of the coating layer is lowered. The optically easy-adhesive polyester film of Comparative Example 8 contains a dicarboxylic acid-forming alcohol component having η of 10 or more in the formulas 1 and 2 in the polyester resin. Therefore, the color unevenness of the effect of suppressing the interference spots when the hard coat layer is laminated does not reduce the unevenness of the average surface matte effect. For the average composition, this makes the composition and the second is not good. -43- •201102416 CN嗽1 Total see-through ratio (%) § 5^ 〇\ oo 0\ 〇〇σ\ oo σ\ oo G\ OO § Os coating layer scratch resistance ◎ ◎ ◎ ◎ ◎ ◎ <] X ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 〇〇〇X 〇 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 〇 屮 屮 ◎ ◎ XX 〇 lt ] ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 〇 B B B 平均Particle size (nm) 〇〇m 〇1 1 o rH 2000 ο κη 〇<n 〇〇Ο ΓΜ ο mo 〇o ΓΛ (N o CO Ο κ κη Ο CN Particle A Compound Sn02 Sn02 Sn02 Sn02 Sn02 Sn〇2 Sn02 Sn〇2 Sn02 1 I Sn02 1 1 Sn02 J Sn02 Sn02 Sn02 Sn〇2 Zr02 Zr02 Zr02 Zr02 Zr02 Ti〇2 refractive index (N CN fH <N oi CN oi ^Η oi <N ι—< (Ν Τ -Η <Ν τ-Η <N Τ-Ή oi <N rlc\i inch (N inch iN inch < N inch (N inch (Ν oi Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3Comparative Example 4 Comparative Example 5 Comparative Example 6 AJ-LA Comparative Example 8 Example 2 Example 3 Example 4 Example 5 1 Example 6 Example 7 Example 8 Example 9 Example 10 Example 12 Example 12 Example 13 Example 14 - inch inch - 201102416 Total see-through ratio (%) § 5: 〇\ 5: 5; 丨 coating layer scratch resistance 1_ ◎ ◎ ◎ 〇〇〇〇 ◎ 〇〇〇 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 耐 耐 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 翁 * ◎ ◎ ◎ 〇 ◎ ◎ ◎ ◎ ◎ ◎ ◎ 〇〇 ◎ ◎ ◎ ◎ 〇 Particle B Average particle size (nm) 〇Ο $ Ο ΙΟ Ο ο Ο o 〇o 〇o Ο 〇IT) o U1 o iT) Ο om om 〇m Particle A Compound Ο 占 Sn02 Sn02 Sn〇2 Sn02 Sn02 | 1 Sn02 | Sn〇2 I Sn02 1 1 Sn02 | I Sn02 I Sn02 Sn〇2 fS 9 H « Refractive index r- (Ν卜<N 卜< CS CS CS CN oi <N <N oi T-一CN CN CN TH CN <N (N CN 卜(N o <N 卜 实实Example 15 Example 16 Example π Example 18 Example 19 Example 20 Example 21 Example 22 Example 23 Example 24 Example 25 Example 26 Example 27 Example 28 Example 30 Example 31 Example 32 Example 33 201102416 Industrial Applicability The optically easy-adhesive polyester film of the present invention has good processability, and has excellent suppression of external light incorporation when a hard coat layer is laminated on the coating layer of the film. Anti-reflective properties such as glare and iridescent color, and good adhesion to hard coating and adhesion (humidity and heat resistance) under high temperature and high humidity, so it is suitable for touch screen and liquid crystal display. Forming or forming a protective film on the front surface of a display screen of a device (LCD), a television or a computer image tube (CRT), a plasma display panel (PDP), an organic electroluminescence (organic EL), etc., forming a suppression film A base film of an antireflection antireflection film such as light, glare, or iridescent color. [Simple description of the diagram] None. [Main component symbol description] None. •46- t S.}

Claims (1)

.201102416 VII. Patent Application Range: 1. An optically easy-to-adhere polyester film which is optically easy to have a coating layer containing a polyester resin and particles A and B on at least one side of the polyester film. a polyester film containing naphthalene dicarboxylic acid as an acid component, a dicarboxylic acid component represented by the following formula (1), and/or a glycol component represented by the following formula (2); The particle A is a metal oxide particle having a refractive index of 1.7 or more and 3.0 or less, and the particle B is a particle having an average particle diameter of 200 nm or more and 700 nm or less; (1) HOOC-(CH2)n-COOH (wherein η is (Integer of 10) (2) HO-(CH2)n-OH (where η is an integer of 10). 2. The optically easy-adhesive polyester film of claim 1, wherein the coating layer contains a crosslinking agent. 3. The optically easy-adhesive polyester film according to claim 2, wherein the crosslinking agent is a urea-based crosslinking agent, an epoxy crosslinking agent, a melamine crosslinking agent, and an isocyanate crosslinking agent. And an oxazoline-based crosslinking agent and a carbodiimide (a compound of at least one selected from the group consisting of 03101丨(16)-based crosslinking agents. It is laminated on the coating layer of the optically easy-to-adhere polyester film according to any one of claims 1 to 3, and is laminated by electron beam or ultraviolet curable propylene resin or siloxane. 201102416 IV. Designation of the representative figure: (1) The representative figure of the case is: No. (2) The symbol of the symbol of the representative figure is simple: 〇5. If there is a chemical formula in this case, Please reveal the chemical formula that best shows the characteristics of the invention: