JP5605111B2 - Antistatic laminate - Google Patents

Description

  The present invention relates to an antistatic laminate comprising a cured layer formed from a liquid curable composition.

  In recent years, with the development of information and communication equipment, the surface of the information and communication equipment is made of a curable composition and has a scratch-resistant and adhesive coating (hard coat) and a coating having an antistatic function (antistatic). Forming a film).

  In particular, optical articles are required to prevent the adhesion of dust due to static electricity and to improve the reduction in transmittance due to reflection. Also, in the display panel, the adhesion of dust due to static electricity and the reflection on the screen are required. The prevention of confusion has been demanded.

In response to these requirements, various curable materials that have high productivity and can be cured at room temperature have been proposed.
When producing a laminate for antistatic, conductive particles as an antistatic agent, for example, metal powder, tin oxide doped with antimony, tin oxide doped with phosphorus, antimony oxide, zinc antimonate, There are methods using inorganic particles such as titanium oxide and ITO (indium tin oxide).

  However, although the method of mixing the conductive particles with the resin can provide antistatic properties, for example, in a triacetyl cellulose (TAC) base material or the like, strong interference unevenness occurs due to the high refractive index of the conductive particles. There was a problem. In addition, the transparency of the coating film and the stability of the liquid are reduced, and the antistatic agent bleeds out to the film surface, resulting in a decrease in suitability for various coating processes on the film surface and blocking between the films. Moreover, since electroconductive particle is expensive, there also existed a problem that it was difficult to manufacture a composition cheaply.

In order to improve the antistatic performance, a method of applying an antistatic agent such as a composition using an ion conductive surfactant or polymer to the surface of the laminate has been performed.
This method of applying an antistatic agent to the surface of the laminate is widely adopted as an effective method because it can not only reliably give the desired antistatic performance but also can easily control its performance level.

  However, even in this method, problems arise in transparency of the coating film and resistance to wet heat of the coating film after the antireflection layer is laminated by bleeding out of the antistatic agent itself. Moreover, there existed a problem that the adhesiveness fall and blocking with an antistatic agent film | membrane and an adhesive agent generate | occur | produce easily. Furthermore, there is a problem in the durability of the antistatic agent film provided on the surface of the laminate, and the antistatic agent falls off due to repeated friction and washing with water, and the antistatic agent is set off and blocked. .

In order to solve such problems, various methods have been studied.
For example, Patent Document 1 describes a composition containing a sulfonic acid and a phosphoric acid monomer as an ion conductive component. However, although the invention described in Patent Document 1 uses an ion conductive substance, there is a problem that the antistatic performance is not sufficient and the performance varies due to drying.

  Patent Document 2 describes a composition containing a chain-like metal powder. However, there is a problem that transparency is lowered because a chain-like metal powder having a large particle diameter is dispersed.

  Patent Document 3 describes a composition mainly composed of tin oxide particles, a polyfunctional acrylate, and a copolymer of methyl methacrylate and polyether acrylate. However, since a large amount of non-curable dispersant is contained, there is a problem that the strength of the cured film is low.

  Patent Document 4 describes an optical disk material containing a trifunctional acrylic ester, a monofunctional ethylenically unsaturated group-containing compound, a photopolymerization initiator, and a conductive powder. However, since a high concentration of chargeable inorganic particles is blended, there is a problem that transparency is low.

  Patent Document 5 describes a conductive paint containing a hydrolyzate of antimony-doped tin oxide particles dispersed in a silane coupler and tetraalkoxysilane, a photosensitizer, and an organic solvent. However, there is a problem that long-term storage stability is not sufficient.

  Patent Document 6 discloses a liquid curable resin composition containing a reaction product of an alkoxysilane containing a polymerizable unsaturated group in its molecule and metal oxide particles, a trifunctional acrylic compound, and a radiation polymerization initiator. Is described. However, there is no suggestion or description about a method for producing a composition having antistatic performance.

  Patent Document 7 includes a conductive oxide fine powder having a primary particle size of 100 nm or less, an easily dispersible low boiling solvent of the conductive oxide fine powder, a hardly dispersible low boiling solvent of the conductive oxide fine powder, And a coating material for forming a transparent conductive film containing a binder resin. However, when a transparent conductive film is formed by applying and drying the described paint, there is a problem in that the organic matrix composed of the binder composition does not have a cross-linked structure, so that the organic solvent resistance is not sufficient. It was.

JP 47-34539 A JP 55-78070 A Japanese Patent Laid-Open No. 60-60166 JP-A-4-172634 Japanese Unexamined Patent Publication No. Hei 6-264209 JP 2000-143924 A JP 2001-131485 A

  The present invention has been made in view of the above-mentioned problems, and has an antistatic laminate comprising a cured layer formed from a liquid curable composition that has excellent strength and transparency after curing and exhibits excellent antistatic performance. The purpose is to provide a body.

  As a result of earnest research to solve the above-mentioned problems, the present inventors have found a cured layer formed from a liquid curable composition containing a conductive polymer having a π-conjugated structure and a (meth) acrylate having a π-conjugated structure. It has been found that the antistatic laminate provided has excellent strength and transparency and exhibits excellent antistatic performance, and the present invention has been completed.

An antistatic laminate according to the present invention includes a base film and a cured layer formed directly or via another layer on the base film, and the cured layer has at least a π-conjugated structure. a conductive polymer having, formed from a liquid curable composition containing a (meth) acrylate having a π-conjugated structure, and a surface resistance of at 1 × ¹⁰ 10 Ω / □ or less. Thus, by forming a hardened layer from a liquid curable composition containing at least a conductive polymer having a π-conjugated structure and a (meth) acrylate having a π-conjugated structure, the flow of electrons is improved. The conductivity is improved. Therefore, excellent antistatic performance is exhibited.

  In the antistatic laminate according to the present invention, it is preferable that a urethane bond is directly connected to the π-conjugated structure of the (meth) acrylate having the π-conjugated structure. With such a configuration, the conductivity is dramatically improved.

  In the antistatic laminate according to the present invention, the difference in refractive index between the base film and the cured layer at a wavelength of 589 nm is preferably 0.1 or less. Such a configuration reduces interference unevenness.

  In the antistatic laminate according to the present invention, the liquid curable composition preferably further contains (meth) acrylate having a liquid refractive index of 1.49 or less. With such a configuration, it becomes possible to adjust the refractive index of the cured layer to reduce uneven interference on the base film.

  In the antistatic laminate according to the present invention, the liquid curable composition preferably further contains (meth) acrylate having a liquid refractive index of 1.47 or less. With such a configuration, it becomes possible to more reliably reduce interference unevenness on the base film by adjusting the refractive index of the cured layer.

  The antistatic laminate according to the present invention preferably includes a low refractive index layer having a refractive index of 1.47 or less on the cured layer. With such a configuration, an antireflection film is formed, and an antireflection function is realized.

  In the antistatic laminate according to the present invention, the low refractive index layer preferably has a thickness of 70 to 150 nm. With such a configuration, the green reflection can be effectively suppressed, and the luminous reflectance can be reduced.

  The liquid curable composition according to the present invention contains a conductive polymer having a π-conjugated structure and (meth) acrylate having a π-conjugated structure. With such a configuration, the flow of electrons is improved and the conductivity is improved. Therefore, excellent antistatic performance is exhibited.

  In the liquid curable composition according to the present invention, it is preferable that a urethane bond is directly connected to the π-conjugated structure of the (meth) acrylate having the π-conjugated structure. With such a configuration, the conductivity is dramatically improved.

  The liquid curable composition according to the present invention preferably further contains a (meth) acrylate having a liquid refractive index of 1.49 or less. With such a configuration, it is possible to reduce the interference unevenness by adjusting the refractive index.

  The liquid curable composition according to the present invention preferably further contains a (meth) acrylate having a liquid refractive index of 1.47 or less. Such a configuration ensures that the interference unevenness is reduced by adjusting the refractive index.

  ADVANTAGE OF THE INVENTION According to this invention, while having the intensity | strength and transparency which were excellent after hardening, the laminated body for antistatic provided with the cured layer formed from the liquid curable composition which exhibits the outstanding antistatic performance can be provided.

Hereinafter, preferred embodiments of the present invention will be described.
An antistatic laminate according to an embodiment of the present invention is an antistatic laminate in which a cured layer is formed on a base film directly or via another layer, and the cured layer has at least a π-conjugated structure Formed from a liquid curable composition containing a conductive polymer having π, a (meth) acrylate having a π-conjugated structure, and a (meth) acrylate having a liquid refractive index of 1.49 or less, and the surface resistance value of the cured layer is The present invention relates to an antistatic laminate that is 1 × 10 ¹⁰ Ω / □ or less. That is, the antistatic laminate according to the embodiment of the present invention has a configuration in which a base film, a cured layer (hard coat layer), or a low refractive index layer (antireflection film) is further formed on the cured layer. Have. In the present invention, the refractive index means a refractive index having a wavelength of 589 nm at 25 ° C.

  Hereinafter, each layer of the antistatic laminate according to the embodiment of the present invention will be described in detail.

<Hardened layer>
The cured layer in the antistatic laminate according to the embodiment of the present invention will be described.
The cured layer according to the embodiment of the present invention can be obtained by applying and drying a liquid curable composition to be described later, and then irradiating with radiation to cure the composition. The cured layer is useful as a hard coat because it has excellent scratch resistance and adhesion. Moreover, a hardened layer is formed on a base film directly or through another layer.

The surface resistance of the hardened layer is 1 × 10 ¹⁰ Ω / □ or less, preferably 1 × 10 ⁹ Ω / □ or less. When the surface resistance exceeds 1 × 10 ¹⁰ Ω / □, the antistatic performance is not sufficient, and dust is likely to adhere, and the attached dust cannot be easily removed.
The difference in refractive index at a wavelength of 589 nm between the base film and the cured layer in the antistatic laminate according to the embodiment of the present invention is 0.1 or less. When the difference in refractive index exceeds 0.1, reflection occurs at the interface between the base film and the cured layer, which causes rainbow-colored interference unevenness.

  Although there is no restriction | limiting in particular as a coating method of a liquid curable composition, For example, well-known methods, such as roll coating, spray coating, flow coating, dipping, screen printing, and inkjet printing, are applicable.

  The radiation source used for curing the liquid curable composition is not particularly limited as long as it is cured in a short time after the composition is applied.

  Examples of visible ray sources include direct sunlight, lamps, fluorescent lamps, and lasers. Examples of ultraviolet ray sources include mercury lamps, halide lamps, and lasers, and electron beam sources. For example, a method using thermoelectrons generated from a commercially available tungsten filament, a cold cathode method in which a metal is generated through a high voltage pulse, and a secondary generated by collision between ionized gaseous molecules and a metal electrode. A secondary electron system using electrons can be used.

Examples of the source of α-rays, β-rays, and γ-rays include fission materials such as ⁶⁰ Co. For the γ-rays, a vacuum tube or the like that causes accelerated electrons to collide with the anode can be used. These radiations may be irradiated alone or in combination of two or more, or one or more kinds of radiation may be irradiated after a certain period of time.

  The thickness of the cured layer is preferably 0.1 to 20 μm, more preferably 0.5 to 15 μm or less. When the film thickness of the cured layer is 0.1 to 20 μm, it is preferable in that both hardness and low warpage can be achieved. When used for an application that places importance on scratch resistance on the outermost surface such as a touch panel and CRT, the thickness is relatively thick, preferably 2 to 20 μm. On the other hand, when used as an antistatic film of an optical film, the thickness is preferably 0.1 to 10 μm.

  For the measurement of the thickness of the hardened layer, an upright dial gauge (manufactured by Ozaki Manufacturing Co., Ltd .: R1-A), a digimatic indicator (manufactured by Mitutoyo Co., Ltd .: ID-C), or the like can be used.

  The hardened layer which concerns on embodiment of this invention is comprised with the liquid curable composition containing the following compositions. Here, (A) and (B) are essential components.

(Method for preparing liquid curable composition)
The liquid curable composition includes (A) a conductive polymer, (B) a (meth) acrylate having a π-conjugated structure, (C) a (meth) acrylate having a liquid refractive index of 1.49 or less, and (D) photopolymerization initiation. It can be prepared by adding an agent, (E) solvent, and, if necessary, non-conductive particles, additives, etc., and mixing at room temperature or under heating conditions. Specifically, it can be prepared using a mixer such as a mixer, a kneader, a ball mill, or a three roll.
A liquid curable composition having such a component is excellent in conductivity as compared with a liquid curable composition obtained by blending an acrylate having no π-conjugated structure. Furthermore, the interference nonuniformity on a base film can be reduced by adjusting the refractive index of a hardened layer (hard coat).
Hereinafter, each component will be described in detail.

(1) Conductive polymer: Component (A)
The conductive polymer according to the embodiment of the present invention has a π-conjugated structure. Specifically, polythiophene, poly (3,4-ethylenedioxythiophene), polyacetylene, poly (p-phenylene), poly (p-phenylenevinylene), polyaniline, polypyrrole, poly (3-hexylthiophene), poly ( 9,9-dioctylfluorene, poly (2-methoxy-5- (2′-ethylhexyloxy) -1,4-phenylene vinylene), poly (1-but-2-phenylacetylene), poly (1-phenyl- 2- (4′-tert-butylphenyl) acetylene or the like is used, but polythiophene is preferable, and the conductive polymer may be blended singly or in combination of two or more. Also good.
The compounding quantity of the conductive polymer: component (A) contained in the liquid curable composition which concerns on embodiment of this invention is 0.1-0.1 with respect to 100 weight part of component whole quantity except the solvent in a composition. 30 parts by weight, preferably 0.5 to 20 parts by weight, more preferably 1 to 10 parts by weight. When the component (A) is 0.1 to 30% by weight, sufficient antistatic performance can be obtained.

(2) (Meth) acrylate having π-conjugated structure: Component (B)
Examples of the π-conjugated structure include a benzene ring and a fluorene skeleton. Here, π conjugation refers to a relationship in which double bonds are adjacent to each other across a single bond. The electrons are not localized on the double bond, but are spread and delocalized on the adjacent single bond, thereby stabilizing the conjugated double bond.

  Examples of (meth) acrylate having a π-conjugated structure include 2-hydroxy-3-phenoxypropyl acrylate, nonylphenol EO-modified acrylate, p-cumylphenol EO-modified acrylate, 2-phenoxyethyl acrylate, phenoxytetraethylene glycol acrylate, 2- Hydroxy-3- (o-phenylphenoxy) propyl acrylate, benzyl acrylate, bisphenol vinyl ester, 2,2-bis [4- (acryloxydiethoxy) phenylpropane, 2,4-tolylene diisocyanate and pentaerythritol triacryl Reaction product of lath, 9,9-bis [4- (2-acryloyloxyethoxy) phenyl) fluorene, aromatic diisocyanate, diol compound and (meth) acrylate having hydroxyl group Reaction products of over bets are mentioned. It is not particularly limited as long as it is a (meth) acrylate having one or more benzene rings. These may be blended singly or in combination of two or more. By using (meth) acrylate having a π-conjugated structure, the conductivity is improved as compared with the case of using (meth) acrylate having no π-conjugated structure.

  Among these, (meth) acrylates in which a urethane bond is directly connected to a π-conjugated structure are preferable. By directly connecting the urethane bond to the π-conjugated structure, the conductivity is more effectively improved. Moreover, in order to improve the hardness of hardened | cured material, it is more preferable that it is (meth) acrylate which has a 2 or more functional group.

  The conductive polymer contained in the liquid curable composition: The amount of the component (B) is 40 to 95 parts by weight, preferably 50 to 90 parts by weight, based on 100 parts by weight of all components excluding the solvent in the composition. Parts, more preferably 60 to 80 parts by weight. When the compounding amount of the component (B) is in the range of 40 to 95 parts by weight, the conductive performance is improved.

(3) (Meth) acrylate having a liquid refractive index of 1.49 or less: Component (C)
(Meth) acrylate having a liquid refractive index of 1.49 or less includes 2-hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, N-vinylformamide, glycidyl methacrylate, tetrahydrofurfuryl acrylate, 4-hydroxybutyl acrylate , Lauryl acrylate, isobornyl acrylate, 2-ethylhexyl acrylate, isobutyl acrylate, t-butyl acrylate, 2-methoxyethyl acrylate, 2-ethoxyethyl acrylate, ethyl carbitol acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, 1, 6-hexanediol diacrylate, neopentyl glycol di (meth) acrylate, tripropylene glycol diac Rate, PEG200 diacrylate, hydroxypivalate neopentyl glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, trisacryloyloxyethyl phosphate, trimethylolpropane EO modified triacrylate, ethoxylated trimethylolpropane triacrylate, penta Examples include erythritol tetraacrylate, ditrimethylolpropane triacrylate, dipentaerythritol pentaacrylate, and silicone urethane acrylate. Among these, 2-hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, N-vinylformamide, glycidyl methacrylate, tetrahydrofurfuryl acrylate, 4-hydroxybutyl acrylate, lauryl acrylate, isobornyl acrylate, 2-ethylhexyl acrylate, Isobutyl acrylate, t-butyl acrylate, 2-methoxyethyl acrylate, 2-ethoxyethyl acrylate, ethyl carbitol acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, 1,6-hexanediol diacrylate, neopentyl glycol di (meth) Acrylate, tripropylene glycol diacrylate, PEG200 diacrylate, silico Down urethane acrylate, and the like are preferable. These may be blended singly or in combination of two or more.

  By using a (meth) acrylate having a liquid refractive index of 1.49 or less, preferably 1.47 or less, in the liquid curable composition, the refractive index of the hard coat is adjusted to prevent interference unevenness on the base film. It becomes possible to reduce. In other words, by adding the component (C), a base film having a predetermined refractive index and a (meth) acrylate having a refractive index comparable to that of the base film (meth) acrylate (component (B) ) Is adjusted to be low, thereby reducing interference unevenness and the like, and exhibiting an antireflection effect.

  (Meth) acrylate having a liquid refractive index of 1.49 or less contained in the liquid curable composition: The compounding amount of the component (C) is 1 to 100 parts by weight of the total amount of the components excluding the solvent in the composition. 50 parts by weight, preferably 5 to 40 parts by weight, more preferably 10 to 30 parts by weight. When the blending amount of component (C) is in the range of 1 to 50 parts by weight, the high refractive index of (meth) acrylate having a π-conjugated structure is adjusted by using (meth) acrylate having a lower refractive index. Is possible.

(4) Photopolymerization initiator: component (D)
Examples of the polymerization initiator according to the embodiment of the present invention include a compound (radiation (light) polymerization initiator) that generates active radical species by radiation (light) irradiation.

  The radiation (photo) polymerization initiator is not particularly limited as long as it is decomposed by light irradiation to generate radicals to initiate polymerization. For example, acetophenone, acetophenone benzyl ketal, 1-hydroxycyclohexyl phenyl ketone, 2 , 2-dimethoxy-1,2-diphenylethane-1-one, xanthone, fluorenone, benzaldehyde, fluorene, anthraquinone, triphenylamine, carbazole, 3-methylacetophenone, 4-chlorobenzophenone, 4,4'-dimethoxybenzophenone, 4,4'-diaminobenzophenone, benzoinpropyl ether, benzoin ethyl ether, benzyldimethyl ketal, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 2-hydride Xyl-2-methyl-1-phenylpropan-1-one, thioxanthone, diethylthioxanthone, 2-isopropylthioxanthone, 2-chlorothioxanthone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholino-propane -1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1,4- (2-hydroxyethoxy) phenyl- (2-hydroxy-2-propyl) ketone, 2, 4,6-trimethylbenzoyldiphenylphosphine oxide, bis- (2,6-dimethoxybenzoyl) -2,4,4-trimethylpentylphosphine oxide, oligo (2-hydroxy-2-methyl-1- (4- (1- Methyl vinyl) phenyl) propanone) and the like.

The liquid curable composition is cured only by irradiation with radiation, but the component (C) can further increase the curing rate in addition to the above functions.
In the present specification, radiation means visible light, ultraviolet light, far ultraviolet light, X-rays, electron beams, α rays, β rays, γ rays, and the like.

  Examples of commercially available radiation (photo) polymerization initiators include Irgacure 184, 369, 651, 500, 819, 907, 784, 2959, CGI 1700, CGI 1750, CGI 1850, CG 24-61, Darocur, manufactured by Ciba Specialty Chemicals Co., Ltd. 1116, 1173, BASF's Lucillin TPO, 8893UCB's Ubekrill P36, Fratelli Lamberti's Ezacure KIP150, KIP65LT, KIP100F, KT37, KT55, KTO46, KIP75 / B, and the like. These may be blended singly or in combination of two or more.

  The amount of the component (D) in the liquid curable composition according to the embodiment of the present invention is preferably 0.5 to 30 parts by weight with respect to 100 parts by weight of the total amount of the components excluding the solvent in the composition. More preferably, it is 1-20 weight part. A liquid curable composition can be appropriately hardened as the compounding quantity of a component (D) is 0.5-30 weight part. A component (D) can be used individually by 1 type or in combination of 2 or more types.

(5) Solvent: Component (E)
The solvent used in the embodiment of the present invention is not particularly limited, but usually a solvent having a boiling point of 200 ° C. or less at normal pressure is preferable. Specifically, water, alcohols, ketones, ethers, esters, hydrocarbons, amides and the like are used. These can be used alone or in combination of two or more.

  Examples of alcohols include methanol, ethanol, isopropyl alcohol, isobutanol, n-butanol, tert-butanol, ethoxyethanol, butoxyethanol, diethylene glycol monoethyl ether, benzyl alcohol, and phenethyl alcohol. Examples of ketones include acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone. Examples of ethers include dibutyl ether and propylene glycol monoethyl ether acetate. Examples of the esters include ethyl acetate, butyl acetate, ethyl lactate, methyl acetoacetate, and ethyl acetoacetate. Examples of hydrocarbons include toluene and xylene. Examples of amides include N, N-dimethylformamide, N, N-dimethylacetamide, N-methylpyrrolidone and the like.

  More specifically, examples include propylene glycol monomethyl ether (PGME), cyclohexanone, methyl ethyl ketone, methyl isobutyl ketone, methanol, and the like, and propylene glycol monomethyl ether (PGME), cyclohexanone, and methyl ethyl ketone are preferable.

  In addition, when using the dispersion liquid which disperse | distributed the electroconductive complex in the solvent, although the solvent which is this dispersion medium mixes in a composition, you may use the solvent of this dispersion as (E) component. However, different solvents may be added.

The compounding quantity of the component (E) solvent in a liquid curable composition is 50-5000 weight part with respect to 100 weight part of total components except the solvent in a composition, Preferably it is 100-1000 weight part. A liquid curable composition can be appropriately hardened as the compounding quantity of a component (E) is 50-5000 weight part.
The solvent according to the embodiment of the present invention functions as a diluent for the liquid curable composition.

  Incidentally, the liquid curable composition usually contains water used as a reaction solvent when the antistatic laminate is produced.

(6) Other components In the embodiment of the present invention, the non-conductive particles, or the non-conductive particles and the alkoxysilane compound are combined with each other as long as the liquid curable composition does not cause problems such as separation and gelation. You may use together the particle | grains obtained by making it react in a solvent.

By using non-conductive particles in combination with a conductive composite, the anti-static function, that is, the scratch resistance is maintained while maintaining a surface resistance of 10 ¹⁰ Ω / □ or less as the anti-static laminate. Further improvement can be achieved.

  Such non-conductive particles are not particularly limited, but are preferably oxide particles or metal particles. Specifically, an oxide particle containing two or more elements selected from the group consisting of oxide particles such as silicon oxide, aluminum oxide, zirconium oxide, titanium oxide, and cerium oxide, or silicon, aluminum, zirconium, titanium, and cerium. There may be mentioned physical particles.

  The primary particle diameter of the non-conductive particles is preferably 0.1 μm or less, more preferably 0.001 to 0.05 μm, as a value determined by a transmission electron microscope. When it is in the range of 0.001 to 0.05 μm, precipitation does not occur in the composition, and the smoothness of the coating film does not decrease.

  When mix | blending nonelectroconductive particle | grains with a liquid curable composition, you may mix, after hydrolyzing a nonelectroconductive particle and an alkoxysilane compound in an organic solvent. This treatment improves the dispersion stability of the non-conductive particles.

  As a commercial product of non-conductive particles, for example, as silicon oxide particles (for example, silica particles), colloidal silica, manufactured by Nissan Chemical Industries, Ltd. Trade names: methanol silica sol, IPA-ST, MEK-ST, NBA -ST, XBA-ST, DMAC-ST, ST-UP, ST-OUP, ST-20, ST-40, ST-C, ST-N, ST-O, ST-50, ST-OL, etc. Can do. Moreover, as powder silica, Nippon Aerosil Co., Ltd. product name: Aerosil 130, Aerosil 300, Aerosil 380, Aerosil TT600, Aerosil OX50, Asahi Glass Co., Ltd. Product name: Sildex H31, H32, H51, H52, H121, H122, Nihon Silica Kogyo Co., Ltd. trade name: E220A, E220, Fuji Silysia Co., Ltd. trade name: SYLYSIA470, Nihon Sheet Glass Co., Ltd. trade name: SG Flakes, etc.

  Moreover, as an aqueous dispersion of aluminum oxide (alumina), product name: Alumina Sol-100, -200, -520 manufactured by Nissan Chemical Industries, Ltd .; As a dispersion of zirconium oxide, manufactured by Sumitomo Osaka Cement Co., Ltd. ( (Toluene, methyl ethyl ketone-dispersed zirconia sol); As a cerium oxide aqueous dispersion, manufactured by Taki Chemical Co., Ltd. Product name: Niedal; As a powder and solvent dispersion of alumina, zirconium oxide, titanium oxide, etc. Product name: Nanotech etc. can be mentioned.

(7) Other additives In liquid curable compositions, as other additives, antioxidants, UV absorbers, light stabilizers, thermal polymerization inhibitors, leveling agents, surfactants, lubricants, scale control An agent etc. can be mix | blended as needed. As antioxidant, Ciba Specialty Chemicals Co., Ltd. brand name: Irganox 1010, 1035, 1076, 1222 etc. can be mentioned. Moreover, as an ultraviolet absorber, Ciba Specialty Chemicals Co., Ltd. product name: Tinuvin P234, 320, 326, 327, 328, 213, 329, Sipro Kasei Co., Ltd. product name: Seasorb 102, 103, 501, 202 712, and the like. Furthermore, as a light stabilizer, Ciba Specialty Chemicals Co., Ltd. trade name: Tinuvin 292, 144, 622LD, Sankyo Co., Ltd. trade name: Sanol LS770, LS440, Sumitomo Chemical Co., Ltd. trade name: Sumisorb TM-061, etc., scale control agents manufactured by Toa Gosei Co., Ltd. Trade name: 2-acrylamido-2-methylpropanesulfonic acid (ATBS), Asahi Kasei Finechem Co., Ltd .: vinyl allylsulfonic acid, etc. it can.

<Low refractive index layer (antireflection film)>
When the antistatic laminate according to the embodiment of the present invention is used as an optical film or the like, it is preferable to provide a low refractive index layer on the cured layer. That is, it is preferable to form a low refractive index layer having a refractive index of 1.47 or less, preferably a refractive index of 1.45 or less. Specifically, a curable composition containing hollow silica particles, a fluorine-containing compound containing a (meth) acryloyl group, or the like is used.

  The film thickness of the low refractive index layer is 50 to 200 nm, preferably 70 to 150 nm. Here, if it is less than 50 nm, the antireflection effect may not be sufficiently obtained, and if it exceeds 200 nm, optical interference may occur and the antireflection effect may be lowered, which is not preferable.

<Base film>
The base film according to the embodiment of the present invention is not particularly limited, such as plastic such as triacetyl cellulose (TAC) and polyethylene terephthalate (PET), metal, ceramics, glass, wood, slate, etc. Triacetyl cellulose (TAC) is preferably applied in terms of easy adhesion with a polarizer produced from polyvinyl alcohol. Here, the refractive index of TAC is 1.49 to 1.50.

  Examples of plastic materials other than TAC and PET include polycarbonate, polymethyl methacrylate, polystyrene / polymethyl methacrylate copolymer, polystyrene, polyester such as polyethylene terephthalate, polyolefin, triacetyl cellulose resin, and diallyl carbonate (CR-39) of diethylene glycol. ), ABS resin, AS resin, polyamide, epoxy resin, melamine resin, cyclized polyolefin resin (for example, norbornene resin), and the like.

<Other layers>
When a hardened layer is formed on the base film according to the embodiment of the present invention, other layers may be interposed. Specifically, a high refractive index layer can be laminated.

  The antistatic laminate according to the embodiment of the present invention can be used for, for example, a high-design container such as a touch panel, a transfer foil, an optical disk hard coat, an automobile window film, and a cosmetic container.

Also applied to anti-reflection films used for the purpose of protecting the surface of display devices such as word processors, computers, televisions, for example, plasma display devices, CRT display devices, liquid crystal display devices, projection display devices, EL display devices. In this case, the surface resistance is 1.0 × 10 ⁹ Ω / □ or less.

  Hereinafter, the embodiments of the present invention will be specifically described by way of examples. However, the embodiments of the present invention are not limited thereto.

Synthesis example 1
(Synthesis of fluorine-containing polymer containing ethylenically unsaturated groups)
A stainless steel autoclave with an internal volume of 1.0 liter with a magnetic stirrer was sufficiently replaced with nitrogen gas, and then 600 g of ethyl acetate, 138.5 g of perfluoro (propyl vinyl ether), 37.5 g of ethyl vinyl ether, 45.9 g of hydroxyethyl vinyl ether, Lauroyl oxide 1.5 g, azo group-containing polydimethylsiloxane (VPS1001 (trade name), manufactured by Wako Pure Chemical Industries, Ltd.) 9.0 g and nonionic reactive emulsifier (ER-30 (trade name), Asahi Denka Kogyo ( Co., Ltd.) 45 g was charged and cooled to −50 ° C. with dry ice-methanol, and then oxygen in the system was removed again with nitrogen gas.

Next, 85.9 g of hexafluoropropylene was charged and the temperature increase was started. The pressure when the temperature in the autoclave reached 55 ° C. was 4.1 × 10 ⁵ Pa. Thereafter, the reaction was continued with stirring at 70 ° C. for 20 hours. When the pressure dropped to 2.0 × 10 ⁵ Pa, the autoclave was cooled with water to stop the reaction. After reaching room temperature, unreacted monomers were released and the autoclave was opened to obtain a polymer solution having a solid content concentration of 30.0%. The obtained polymer solution was put into methanol to precipitate a polymer, washed with methanol, and vacuum dried at 50 ° C. to obtain 250 g of a hydroxyl group-containing fluoropolymer.

  In a 1-liter separable flask equipped with a magnetic stirrer, a glass condenser and a thermometer, 50.0 g of the hydroxyl group-containing fluoropolymer obtained above and 2,6-di-t- 0.01 g of butylmethylphenol and 359 g of methyl isobutyl ketone (MIBK) were charged and stirred at 20 ° C. until the hydroxyl group-containing fluoropolymer 1 was dissolved in MIBK and the solution became transparent and uniform.

Next, 13.4 g of 2-methacryloyloxyethyl isocyanate was added to this system and stirred until the solution became homogeneous, then 0.1 g of dibutyltin dilaurate was added to start the reaction, and the temperature of the system was changed to 55 to 55. A MIBK solution of an ethylenically unsaturated group-containing fluoropolymer was obtained by maintaining the temperature at 65 ° C. and continuing stirring for 5 hours.
2 g of this solution was weighed in an aluminum dish, dried on a hot plate at 150 ° C. for 5 minutes, and weighed to determine the solid content, which was 15.0% by mass.

Synthesis example 2
(Synthesis of benzene ring-containing urethane acrylate)
In a three-necked flask equipped with a stirrer, 0.072 g of 2,6-di-t-butyl-p-cresol (Yoshitomi Fine Chemical, Yoshinox BHT), tetramethylolmethane triacrylate (manufactured by Shin-Nakamura Chemical Co., Ltd., NK Ester A -TMM-3LM-N) was charged with 67.16 g and 2,4-tolylene diisocyanate (Mitsui Chemical Polyurethane Co., Ltd., TOLDY-100) 22.74 g, and cooled in an ice bath. Thereto, 0.206 g of dioctyltin dilaurate (manufactured by Kyodo Yakuhin Co., Ltd., KS-1200-A) was added, followed by stirring at 30 ° C. or lower for 2 hours. Next, 9.81 g of 3,6-dioxa-1,8-octanediol (Wako Pure Chemical Industries, Ltd., Wako First Grade Reagent) was added. Then, it heated up to 60 degreeC and heated for 2 hours. Thus, a benzene ring-containing urethane acrylate (PETA-TDI-TEG-TDI-PETA) represented by the following chemical structural formula was obtained.

Synthesis example 3
(Synthesis of urethane acrylate containing no benzene ring)
To a solution consisting of 18.8 parts of isophorone diisocyanate and 0.2 part of dibutyltin dilaurate in a container equipped with a stirrer, 93 parts of NK ester A-TMM-3LM-N manufactured by Shin-Nakamura Chemical Co., Ltd., 10 ° C., 1 hour Then, the mixture was stirred at 60 ° C. for 6 hours to obtain urethane acrylate (PETA-IPDI-PETA) containing no benzene ring.

Example 1
<Manufacture of hardened layer>
(Preparation of liquid curable composition)
In a container shielded from ultraviolet rays, urethane acrylate oligomer (PETA-TDI-PETA) (Sartomer Japan, Inc .: CN997) 69.44 parts by weight, tetrahydrofurfuryl acrylate (Osaka Organic Chemical Industries, Ltd .: Biscote # 150) ) 23.15 parts by weight, 4.63 parts by weight of hydroxycyclohexyl phenyl ketone (manufactured by Ciba Japan KK: Irgacure 184), 55.56 parts by weight of conductive polymer solution (manufactured by Shin-Etsu Polymer Co., Ltd .: Sepulzida SAS-PE-S03) Parts (solid content 2.78 parts by weight), ethylene glycol (Wako Pure Chemical Industries, Ltd., Wako first grade reagent) 2.50 parts by weight and n-butyl acetate (Kyowa Hakko Chemical Co., Ltd .: butyl acetate-S) Stir 130.44 parts by weight at room temperature for 1 hour. In to obtain a homogeneous liquid curable composition.
2 g of this composition was weighed in an aluminum dish, dried on a hot plate at 80 ° C. for 5 minutes, and weighed to determine the solid content, which was 35.0% by weight.

(Production of cured layer)
The curable composition prepared above was applied on a TAC film substrate having a thickness of 80 μm to a film thickness of 4 μm using a wire bar coater (12 mil). After drying at 80 ° C. for 2 minutes, a cured layer was produced by irradiating with ultraviolet rays at a dose of 0.3 J / cm ² in air using a high-pressure mercury lamp.

<Manufacture of antireflection film>
(Production method of antireflection film material)
56.0 parts by weight (8.4 parts by weight as a solid content) of MIBK solution of the ethylenically unsaturated group-containing fluoropolymer prepared in Synthesis Example 1 and MIBK sol of hollow silica particles (manufactured by JGC Catalysts & Chemicals, Inc .: ELCOM JX1009SIV) 226.24 parts by weight (50.0 parts by weight as solids), pentaerythritol triacrylate (Nippon Kayaku Co., Ltd .: PET-30) 21.0 parts by weight, acryloylmorpholine (manufactured by Kojin Co., Ltd .: ACMO) 5.6 parts by weight, 2-hydroxy-1- {4- [4- (2-hydroxy-2-methyl-propionyl) -benzyl] -phenyl} -2-methyl-propan-1-one (Ciba Japan Co., Ltd .: Irgacure 127) 3.0 parts by weight, polydimethylsiloxane (Wako Pure Chemical Industries, Ltd .: VPS1001) 3.0 parts by weight Perfluoroalkylethylene oxide adduct (Dainippon Ink Chemical Co., Ltd .: F-444) 0.5 part by weight and MIBK2082.67 part by weight are charged into a glass separable flask equipped with a stirrer, at room temperature for 1 hour. A uniform curable resin composition was obtained by stirring. 2 g of this solution was weighed in an aluminum dish, dried on a hot plate at 150 ° C. for 5 minutes, and weighed to determine the solid content, which was 4.0% by weight.

(Preparation of antireflection film)
Each curable composition obtained above is formed to have a film thickness of 0.1 μm on the cured layer (hard coat) of the base film for curable composition coating obtained above using a wire bar coater. And dried at 80 ° C. for 1 minute to form a coating film. Next, ultraviolet rays were irradiated under a light irradiation condition of 600 mJ / cm ² using a high-pressure mercury lamp under a nitrogen stream to produce an antireflection film. The refractive index of the antireflection film was 1.37.

From Table 1, polythiophene which is a π-conjugated conductive polymer, PETA-TDI-PETA which is a π-conjugated structure (meth) acrylate in which urethane bonds are directly connected, and (meth) acrylate having a liquid refractive index of 1.47 The surface resistance was 2.0 × 10 ⁹ Ω / □ by containing tetrahydrofurfuryl acrylate. From this result, it is clear that the conductivity is improved and the antistatic function is exhibited. In addition to hard coat properties such as scratch resistance and wet heat resistance, it is also excellent in transparency and interference unevenness.

(Example 2)
Example 1 except that 69.44 parts by weight of the urethane acrylate oligomer in Example 1 (manufactured by Sartomer Japan KK: CN997) was changed to 69.44 parts by weight of the benzene ring-containing urethane acrylate obtained in Synthesis Example 2. A liquid curable composition was produced in the same manner as described above.
Using the liquid curable composition produced above, a laminate was produced in the same manner as in Example 1.

From Table 1, polythiophene which is a π-conjugated conductive polymer, PETA-TDI-TEG-TDI-PETA which is a π-conjugated structure (meth) acrylate in which urethane bonds are directly connected, and a liquid refractive index of 1.45. By containing silicone urethane acrylate which is (meth) acrylate, the surface resistance was 3.0 × 10 ⁹ Ω / □. From this result, it is clear that the conductivity is improved and the antistatic function is exhibited. In addition to hard coat properties such as scratch resistance and wet heat resistance, it is also excellent in transparency and interference unevenness.

(Example 3)
23.15 parts by weight of tetrahydrofurfuryl acrylate (Osaka Organic Chemical Co., Ltd .: Biscoat # 150) in Example 1 was added to 23.15 parts by weight of silicone urethane acrylate (Miwon Specialty Chemical Co., Ltd .: MIRAMER SIU2400). A liquid curable composition was produced in the same manner as in Example 1 except for the change.
Using the liquid curable composition produced above, a laminate was produced in the same manner as in Example 1.

From Table 1, polythiophene, which is a π-conjugated conductive polymer, PETA-TDI-PETA, which is a π-conjugated structure (meth) acrylate in which urethane bonds are directly connected, and (meth) acrylate having a liquid refractive index of 1.45 The surface resistance was 5.0 × 10 ⁹ Ω / □ by containing the silicone urethane acrylate. From this result, it is clear that the conductivity is improved and the antistatic function is exhibited. In addition to hard coat properties such as scratch resistance and wet heat resistance, it is also excellent in transparency and interference unevenness.

(Comparative Example 1)
The same as Example 1 except that 69.44 parts by weight of the urethane acrylate oligomer (Sartomer Japan Co., Ltd .: CN997) in Example 1 was changed to 69.44 parts by weight of PETA-IPDI-PETA obtained in Synthesis Example 3. A liquid curable composition was produced.
Using the liquid curable composition produced above, a laminate was produced in the same manner as in Example 1.

From Table 1, polythiophene which is a π-conjugated conductive polymer, bisphenol vinyl ester which is a (meth) acrylate having no π-conjugated structure, and tetrahydrofurfuryl which is a (meth) acrylate having a liquid refractive index of 1.47. By containing acrylate, the surface resistance was a high value of 8.0 × 10 ¹² Ω / □. As a result, the conductivity becomes low, and a sufficient antistatic function cannot be obtained.

(Comparative Example 2)
Except for changing 69.44 parts by weight of the urethane acrylate oligomer (Sartomer Japan Co., Ltd .: CN997) in Example 1 to 69.44 parts by weight of bisphenol vinyl ester (Showa Denko Co., Ltd .: Lipoxy VR-77), A liquid curable composition was produced in the same manner as in Example 1.
Using the liquid curable composition produced above, a laminate was produced in the same manner as in Example 1.

From Table 1, polythiophene which is a π-conjugated conductive polymer, bisphenol vinyl ester which is a (meth) acrylate having a π-conjugated structure but no urethane bond, and a (meth) acrylate having a liquid refractive index of 1.47 The surface resistance was as high as 5.0 × 10 ¹³ Ω / □ by containing tetrahydrofurfuryl acrylate. As a result, the conductivity becomes low, and a sufficient antistatic function cannot be obtained.

(Comparative Example 3)
69.44 parts by weight of the urethane acrylate oligomer in Example 1 (manufactured by Sartomer Japan, Inc .: CN997) was added to 9.9-bis [4- (2-acryloyloxyethoxy) phenyl] fluorene (Shin-Nakamura Chemical Co., Ltd .: (NK ester A-BPEF) A liquid curable composition was produced in the same manner as in Example 1 except that the amount was changed to 69.44 parts by weight.
Using the liquid curable composition produced above, a laminate was produced in the same manner as in Example 1.

From Table 1, polythiophene which is a π-conjugated conductive polymer, 9,9-bis [4- (2-acryloyloxyethoxy) phenyl] fluorene which is a (meth) acrylate having a π-conjugated structure but no urethane bond, And by containing tetrahydrofurfuryl acrylate which is a (meth) acrylate having a liquid refractive index of 1.47, the surface resistance was a high value of 4.0 × 10 ¹⁰ Ω / □. As a result, the conductivity becomes low, and a sufficient antistatic function cannot be obtained.

(Comparative Example 4)
Except for changing 69.44 parts by weight of the urethane acrylate oligomer (Sartomer Japan Co., Ltd .: CN997) in Example 1 to 69.44 parts by weight of dipentaerythritol hexaacrylate (Nippon Kayaku Co., Ltd .: KAYARAD DPHA), A liquid curable composition was produced in the same manner as in Example 1.
Using the liquid curable composition produced above, a laminate was produced in the same manner as in Example 1.

From Table 1, polythiophene which is a π-conjugated conductive polymer, dipentaerythritol hexaacrylate which is a (meth) acrylate having neither a π-conjugated structure nor a urethane structure, and a (meth) acrylate having a liquid refractive index of 1.47. By containing a certain tetrahydrofurfuryl acrylate, the surface resistance was a high value of 9.0 × 10 ¹² Ω / □. As a result, the conductivity becomes low, and a sufficient antistatic function cannot be obtained.

Example 4
69.44 parts by weight of urethane acrylate oligomer (Sartomer Japan, Inc .: CN997) in Example 1 was 92.59 parts by weight, and tetrahydrofurfuryl acrylate (Osaka Organic Chemical Co., Ltd .: Biscoat # 150) 23.15. A liquid curable composition was produced in the same manner as in Example 1 except that the parts by weight were omitted.
Using the liquid curable composition produced above, a laminate was produced in the same manner as in Example 1.

From Table 1, by including only polythiophene, which is a π-conjugated conductive polymer, and PETA-TDI-PETA, which is a (meth) acrylate having a π-conjugated structure in which urethane bonds are directly bonded, the surface resistance is 5.0. The value was as low as × 10 ⁹ Ω / □. As a result, the conductivity is improved and the antistatic function is exhibited.

(Example 5)
Π-conjugated system conductive polymer Shin-Etsu Polymer Co., Ltd. Sepuljida SAS-PE-S03 2.78 parts by weight in Example 1 was changed to Shin-Etsu Polymer Co., Ltd .: Sepulgida SAS-PE-J01 2.78 parts by weight. A liquid curable composition was produced in the same manner as in Example 1.
Using the liquid curable composition produced above, a laminate was produced in the same manner as in Example 1.

From Table 1, by including only polythiophene which is a π-conjugated conductive polymer and PETA-TDI-PETA which is a (meth) acrylate having a π-conjugated structure in which urethane bonds are directly connected, the surface resistance is 2.0. The value was as low as × 10 ⁹ Ω / □. As a result, the conductivity is improved and the antistatic function is exhibited.

<Characteristic evaluation of laminate>
On the base film (TAC), an antistatic laminate comprising a cured layer (hard coat layer) using the liquid curable compositions obtained in Examples and Comparative Examples described later was obtained. Further, a low refractive index layer (antireflection film) was formed on the cured layer as necessary.
The antistatic laminate was measured for surface resistance, haze, total light transmittance, interference unevenness, scratch resistance, and thermal resistance. The obtained results are shown in Table 1.

(1) Surface resistance (Ω / □)
Anti-static laminate (hard coat layer / TAC laminate, and low refractive index layer / hard coat layer / TAC laminate) high resistance meter (Agilent Technology Co., Ltd. Agilent 4339B), and resiliency cell The measurement was performed under the condition of an applied voltage of 100 V using 16008B (manufactured by Agilent Technologies). The obtained results are shown in Table 1.

(2) Haze The haze (%) of the antistatic laminate (hard coat layer / TAC laminate, and low refractive index layer / hard coat layer / TAC laminate) was changed to a color haze meter (manufactured by Suga Test Instruments Co., Ltd.). ) In accordance with JIS K7105. The obtained results are shown in Table 1.

(3) Total light transmittance The total light transmittance (%) of the antistatic laminate (hard coat layer / TAC laminate, and low refractive index layer / hard coat layer / TAC laminate) was measured using a color haze meter (Suga Measured according to JIS K7105 using a tester (manufactured by Tester Co., Ltd.). The obtained results are shown in Table 1.

(4) Interference unevenness A black tape is attached to the back surface (reverse side of the TAC hard coat layer / low refractive index layer) of the antistatic laminate (refractive index layer / hard coat layer / TAC laminate), and under the fluorescent lamp. And visually evaluated according to the following evaluation criteria. The obtained results are shown in Table 1.
○: No interference unevenness ×: Interference unevenness

(5) Scratch resistance test (steel wool resistance test)
Antistatic laminate (low refractive index layer / hard coat layer / TAC laminate), steel wool (Bonster No. 0000, manufactured by Nippon Steel Wool Co., Ltd.), Gakushin type friction fastness tester (AB-301) , Manufactured by Tester Sangyo Co., Ltd.) and repeatedly rubbing the surface of the antistatic laminate 10 times under the condition of a load of 500 g, and visually confirming whether the surface of the antistatic laminate is scratched. Evaluation was made according to the following evaluation criteria. The obtained results are shown in Table 1.
○: No damage ×;

(6) Moist heat resistance The antistatic laminate (low refractive index layer / hard coat layer / TAC laminate) is stored in a 60 ° C./90% RH environment for 500 hours, and the haze and surface after conditioning for 24 hours Resistance was measured. The obtained results are shown in Table 1.
○: No change in initial physical properties of both haze and surface resistance ×: Either haze, surface resistance or both increase (deteriorate)

The components in Table 1 are as follows.
SAS-PE-S03: Sepulgeda SAS-PE-S03 manufactured by Shin-Etsu Polymer Co., Ltd.
SAS-PE-J01: Sepulzida SAS-PE-J01 manufactured by Shin-Etsu Polymer Co., Ltd.
PETA-TDI-PETA: CN997 manufactured by Sartomer Japan, Inc. (reaction product of tolylene diisocyanate and pentaerythritol triacrylate)
PETA-TDI-TEG-TDI-PETA: Urethane acrylate PETA-IPDI-PETA produced in Synthesis Example 2 Urethane acrylate bisphenol vinyl ester produced in Synthesis Example 3: Lipoxy VR-77 (Bisphenol A, Showa Polymer Co., Ltd.) Epoxy diacrylate)
Silicone urethane acrylate: MIRAMER SIU2400 manufactured by Miwon
Irg. 184: Irgacure 184 (1-hydroxycyclohexyl phenyl ketone) manufactured by BASF

Claims (10)

A base film;
A cured layer formed directly or via another layer on the base film,
The cured layer is
Formed from a liquid curable composition containing at least a conductive polymer having a π-conjugated structure and a (meth) acrylate having a π-conjugated structure, and
Surface resistance value is 1 × ^{10 10} Ω / □ Ri der below,
The (meth) acrylate having the π-conjugated structure is an antistatic laminate including a structure in which a urethane bond is directly connected to the π-conjugated structure . The antistatic laminate according to claim 1 , wherein a difference in refractive index between the base film and the cured layer at a wavelength of 589 nm is 0.1 or less. The antistatic laminate according to claim 1 or 2 , wherein the liquid curable composition further contains (meth) acrylate having a liquid refractive index of 1.49 or less. The antistatic laminate according to claim 1 or 2 , wherein the liquid curable composition further contains (meth) acrylate having a liquid refractive index of 1.47 or less. Wherein the cured layer, a refractive index of 1.47 or less of the low refractive index layer, antistatic laminate according to any one of claims 1 to 4, further comprising. 6. The antistatic laminate according to claim 5 , wherein the low refractive index layer has a thickness of 70 to 150 nm. The laminate for antistatic according to any one of claims 1 to 6 , wherein the substrate film is a triacetyl cellulose (TAC) substrate. a conductive polymer having a π-conjugated structure;
(meth) acrylate having a π-conjugated structure ,
The (meth) acrylate having the π-conjugated structure is a liquid curable composition containing a structure in which a urethane bond is directly connected to the π-conjugated structure . The liquid curable composition according to claim 8 , further comprising (meth) acrylate having a liquid refractive index of 1.49 or less. The liquid curable composition according to claim 8 or 9 , further comprising (meth) acrylate having a liquid refractive index of 1.47 or less.