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Layered product, and molded object and production method therefor

A laminated body and molded body technology, applied in the direction of chemical instruments and methods, coatings, layered products, etc., can solve the problems that the scratch resistance is not used, does not have scratch resistance, etc., to improve transparency, The effect of suppressing the occurrence of cracks

Active Publication Date: 2020-09-04
DAICEL CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the post-curing method, the pencil hardness can only be increased to about F, and it does not have scratch resistance, so it is not used in fields requiring scratch resistance

Method used

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  • Layered product, and molded object and production method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0137] 40 parts by weight of urethane acrylate, 60 parts by weight of EO modified dipentaerythritol hexaacrylate, 0.9 parts by weight of cellulose acetate propionate, 1.3 parts by weight of fluorine-containing acrylate A, 1 part by weight of photopolymerization initiator A, 2 parts by weight of photopolymerization initiator B were dissolved in a mixed solvent of 135 parts by weight of methyl ethyl ketone, 29 parts by weight of 1-butanol, and 29 parts by weight of 1-methoxy-2-propanol propylene glycol monomethyl ether. This solution was cast onto a PET film using a wire bar #10, and then left in an oven at 100° C. for 1 minute to evaporate the solvent and form a coating layer with a thickness of about 5 μm. Then, the coating was irradiated with ultraviolet rays from a high-pressure mercury lamp (manufactured by EYEGRAPHICS Co., Ltd.) for about 5 seconds (ultraviolet irradiation amount: 120mJ / cm 2 ), and a hard coat film (laminate) was produced.

Embodiment 2

[0139] A hard coat film was produced by the method similar to Example 1 except having changed urethane acrylate into 80 weight part, and EO modified dipentaerythritol hexaacrylate into 20 weight part.

Embodiment 3

[0141] A hard coat film was produced by the method similar to Example 1 except having changed urethane acrylate into 30 weight part, and EO modified dipentaerythritol hexaacrylate into 70 weight part.

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Abstract

A layered product which comprises a base layer and a hardcoat layer superposed on at least one surface of the base layer, and which has a tensile elongation, as measured in accordance with JIS K6251,of 5% or higher and suffers no scratches even when steel wool #0000 is reciprocatingly slid 1,000 times on the hardcoat layer surface under a load of 1 kg / cm<2>. The hardcoat layer may have a pencil hardness of F or higher. The layered product may have a haze of 2% or less. The layered product may have a total light transmittance of 85% or higher. The hardcoat layer may be a cured layer formed from a curable composition comprising a polyfunctional (meth)acrylate and a fluorinated vinyl compound. The polyfunctional (meth)acrylate may comprise a urethane (meth)acrylate and a (meth)acrylic acid ester of a polyhydric alcohol / alkylene oxide adduct. The layered product can combine scratch resistance with extensibility.

Description

technical field [0001] The present invention relates to an extensible hard coat film (laminated body) capable of suppressing the occurrence of cracks even when used in molding requiring flexibility such as in-mold molding, a molded body including the film, and a method for producing the same. Background technique [0002] Molded articles made of thermoplastic resins such as polyester are used in various applications because of their excellent moldability and mechanical properties. However, compared with inorganic materials such as glass, its surface hardness is low and it is easily damaged. Depending on the application, a curable resin such as a photocurable resin is applied to the surface and cured to form a hard coat layer with high hardness. Such a hard coat layer has been used in the field of molded articles made of thermoplastic resins, such as molded articles for various purposes such as optical equipment, precision equipment, electrical / electronic equipment, and daily...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/046C09D4/02C09D4/06C09D175/14C09D171/02C09D7/61C08L67/02C08J7/043
CPCC08F20/10C08J2367/02C08J2433/04C08J2433/14C08J7/0427C08J7/046C09D4/00C08F222/1065C08G18/8175C09D175/16C08J7/043C08F220/22C08F222/1006B32B7/022B29C45/14B32B27/08C08G18/672
Inventor 宇佐大辅高桥启司
Owner DAICEL CHEM IND LTD