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Hard coat film and front surface protective plate

A technology of hard coating and substrate film, which is applied in the direction of coating, layered products, and layered product processing, etc. Good effect with excellent surface hardness

Inactive Publication Date: 2013-07-03
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the acrylic resin film of Patent Document 1, since the rubber particles are dispersed in the methacrylic resin, appearance defects such as fish eyes (a kind of coating film defect) and mold parting are likely to occur. Quality coating film, which does not contain granular materials such as rubber particles, has excellent appearance, scratch resistance, impact resistance or surface hardness, and has high transparency

Method used

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  • Hard coat film and front surface protective plate
  • Hard coat film and front surface protective plate
  • Hard coat film and front surface protective plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] (1) Preparation of monomer raw materials for base film

[0109] In a reactor equipped with a condenser, a thermometer, and a stirrer, polytetramethylene glycol dimethacrylate (manufactured by Mitsubishi Rayon Co., Ltd., Acrylate PBOM) 10 parts, 90 parts of methyl methacrylate (manufactured by Mitsubishi Rayon Co., Ltd., acrylate M) as mono(meth)acrylate (B-1), and n-octyl sulfide as chain transfer agent 0.4 part of alcohol (manufactured by Elphatochem Japan Co., Ltd., NOM) was stirred, and heating was started.

[0110] When the temperature in the reactor reached 70°C, 2,2'-azobis(2,4-dimethylvaleronitrile) (manufactured by Wako Pure Chemical Industries, Ltd., V65) 0.026 Next, after raising the temperature in the reactor to 80° C. and maintaining it for 60 minutes, the temperature in the reactor was rapidly cooled to room temperature using a large amount of ice water to obtain a syrup (c′-1). The viscosity of the syrup (c'-1) at 25°C was 185 cps. The results are sho...

Embodiment 2～5 and comparative example 1

[0128] A syrup (c'-2) was produced in the same manner as in Example 1 except that the raw material of the syrup was changed to the conditions shown in Table 1. Using the syrup shown in Table 1, the composition of the monomer raw material for the base film and the thickness of the hard coat layer were changed to the conditions shown in Table 4. In Comparative Example 1, a hard coat layer could not be formed. Except for these conditions, it carried out similarly to Example 1, and obtained the hard coat film, respectively. Table 4 shows the evaluation results of each hard coat film.

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Abstract

Provided is a hard coat film which has good appearance as well as excellent transparency, impact resistance and scratch resistance or surface hardness. Specifically provided is a hard coat film which is obtained by laminating a hard coat layer on at least one surface of a base film that contains a polymer (C) containing a unit of a di(meth)acrylate (A) represented by formula (1) and a unit of a mono(meth)acrylate (B). In formula (1), X represents at least one diol residue that has a number average molecular weight of 500 or more and is selected from among polyalkylene glycol residues, polyester diol residues and polycarbonate diol residues; and R1 represents H or CH3.

Description

technical field [0001] The present invention relates to a hard coat film and a front protective plate. Background technique [0002] As films for various displays such as liquid crystal display panels, plasma display panels, and car navigation display panels, as well as touch screen films for mobile information terminals, etc., hard coating film. As the base film of the hard coat film, transparent films such as polyester films, polycarbonate films, polymethyl methacrylate films, triacetyl cellulose films, and polyolefin films are used. [0003] In addition, as the hard coat layer of the hard coat film, a coating excellent in scratch resistance or abrasion resistance is used. The layer cured by the radiation-curable composition. When a composition containing a polyfunctional (meth)acrylic compound is used as a raw material for forming a hard coat layer, and a polyester film, a polycarbonate film, a triacetylcellulose film, or a polyolefin film is used as a base film,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30C08F220/26C08J7/04C08J7/043C08J7/046
CPCC08J2333/06C08J2433/06C08F2/38C08F220/14C08J2333/12C09D4/06Y10T428/269Y10T428/265Y10T428/31504C08J7/0427C08J7/043C08J7/046C08F222/102C08F265/06B32B27/08B32B27/308C08F222/1006B32B2307/558B32B2307/584B32B2309/105
Inventor 锅岛泰彦庄子惠子舟见英太
Owner MITSUBISHI CHEM CORP
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