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Hardcoat laminate

a technology of hardcoat and laminate, applied in the field of hardcoat laminate, can solve the problems altering the film by the organic solvent, etc., and achieve the effect of partially decreasing the transparency of the film

Inactive Publication Date: 2009-05-21
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a hardcoat laminate that can maintain high transparency and surface hardness even in various environmental changes. The hardcoat layer is formed on a support made from a thermoplastic composition containing a polymer having a lactone ring unit or a glutaric anhydride unit, and the hardcoat layer forming coating composition contains at least a component (a), a component (b) and a component (c) and contains substantially no organic solvent. The components (a) and (b) are a curable compound having three or more polymerizable groups within one molecule and a polymerization initiator, while the component (c) is a diluent having from one to three polymerizable groups within one molecule. The polymer can have a lactone ring unit or a glutaric anhydride unit. The hardcoat laminate can be used in various applications such as optical components, electronic components, and automotive components.

Problems solved by technology

However, when a coating solution having a generally employed hardcoat layer-forming composition obtained by diluting a reactive monomer with an organic solvent is coated on such a film and cured, it is found that the film is altered by the organic solvent and the transparency of the film is partially decreased.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

synthesis example 1

Production of Lactone Ring-Containing Polymer Pellet (P-1)

[0208]Into a 30 L-volume reaction kettle equipped with a stirring unit, a temperature sensor, a condenser and a nitrogen inlet tube, 8,000 g of methyl methacrylate (MMA), 2,000 g of methyl 2-(hydroxymethyl)acrylate (MHMA), 10,000 g of 4-methyl-2-pentanone (methyl isobutyl ketone, MIBK) and 5 g of n-dodecyl mercaptan are charged. While flowing nitrogen thereto, the temperature is raised to 105° C. and when the system started refluxing, 5.0 g of tert-butylperoxyisopropyl carbonate (“Kayacarbon Bic-75” (trade name), produced by Kayaku Akzo Corp.) is added as an initiator and as the same time, a solution containing 10.0 g of tert-butylperoxyisopropyl carbonate and 230 g of MIBK is added dropwise over 2 hours, thereby effecting solution polymerization under reflex (from about 105 to 120° C.). Furthermore, ripening is performed over 4 hours.

[0209]To the obtained polymer solution, 30 g of a stearyl phosphate / distearyl phosphate mix...

synthesis example 2

Production of Glutaric Anhydride Unit-Containing Acrylic Thermoplastic Copolymer Pellet (P-2)

[0211]20 Parts by mass of methyl methacrylate, 80 parts by mass of acrylamide, 0.3 parts by mass of potassium persulfate and 1,500 parts by mass of ion exchanged water are charged into a reaction vessel, and the system is kept at 70° C. while displacing the inside of the reaction vessel with a nitrogen gas until the monomers are completely converted into a polymer, whereby an aqueous methyl methacrylate / acrylamide copolymer-based suspension agent solution is produced.

[0212]A solution obtained by further dissolving 0.05 parts of the obtained aqueous methyl methacrylate / acrylamide copolymer-based suspension agent solution in 165 parts of ion exchanged water is fed to a stainless steel-made autoclave and stirred, and the inside of the system is displaced with a nitrogen gas. Thereafter, the following monomer mixture is added while stirring the reaction system, and the temperature is raised to ...

production example 1

Production of Support (SP-1)

[0216]Pellet (P-1) and an acrylonitrile-styrene (AS) resin (TOYO AS AS20″ (trade name), produced by Toyo Styrene Co., Ltd.) are kneaded using a single-screw extruder (φ=30 mm) in a mass ratio of P-1 / AS resin=90 / 10 to obtain a transparent pellet. The glass transition temperature of the obtained pellet is 127° C. This pellet is dissolved in methyl ethyl ketone (MEK), and Film (SP-1) of 60 μm is produced by a solution casting method.

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Abstract

A hardcoat laminate including: a support formed from a thermoplastic resin composition; and a hardcoat layer formed from a hardcoat layer forming coating composition, wherein the thermoplastic resin composition contains a polymer having a lactone ring unit or a glutaric anhydride unit, and the hardcoat layer forming coating composition contains at least a component (a), a component (b) and a component (c) and contains substantially no organic solvent: (a) a curable compound having three or more polymerizable groups within one molecule, (b) a polymerization initiator, and (c) a diluent having from one to three polymerizable groups within one molecule.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a hardcoat laminate in which a hardcoat layer formed from a hardcoat layer-forming coating composition mainly comprising a polymerizable compound, a polymerization initiator and a diluent is stacked on a support formed from a thermoplastic resin composition containing a lactone ring unit or a glutaric anhydride unit.[0003]2. Description of the Related Art[0004]In recent years, a flat panel display as typified by liquid crystal display, PDP, organic EL and the like comes into widespread use in place of a Braun tube, and this is accompanied by diversification of the environment in which the display is installed. Also, in the case of a display used for a mobile device such as cellular phone or Palm, the use environment is becoming severer.[0005]A triacetyl cellulose film is easy of processing as a protective film for a polarizing plate and therefore, being widely used as an optical film for...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B27/36
CPCC08J7/18C08J2433/06C08J2333/06Y10T428/31909Y10T428/31786
Inventor KONDO, SHUNICHIYONEYAMA, HIROYUKI
Owner FUJIFILM CORP
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