Acrylic resin composition

Inactive Publication Date: 2005-11-03
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] An object of the present invention is to provide an acrylic resin composition capable of producing an opti

Problems solved by technology

Such an optical laminated film tends to generate curl and the like due to large dimension change by expansion and shrinkage under heating or moistening and heating conditions, consequently, there are problems such as occurrence of foaming in an adhesive layer of the resulted optical laminate, generation of peeling between an adhesive layer and a glass base material, and the like.
Under heating or moistening and heating conditions, distribution of remaining stress acting on an optical laminated film becomes non-uni

Method used

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  • Acrylic resin composition
  • Acrylic resin composition
  • Acrylic resin composition

Examples

Experimental program
Comparison scheme
Effect test

Example

Polymerization Example 1-5

[0138] The reaction was completed in the same manner as in Polymerization Example 1-1 except that 183 parts of ethyl acetate, and 60.0 parts of n-butyl acrylate and 8.9 parts of n-butyl methacrylate as a monomer (a), 6.9 parts of N-vinylpyrrolidone as a monomer (b), 6.4 parts of isobornyl acrylate as a monomer (d), and 0.49 parts of AIBN were used. The content of non-volatile components in the resulted acrylic resin solution was regulated to 30%, to find a viscosity of 30 mPa.s. The weight-average molecular weight based on polystyrene calibration standard by GPC was approximately 84,800.

Polymerization Example 1-6

[0139] The reaction was completed in the same manner as in Polymerization Example 1-1 except that 159 parts of ethyl acetate, and 45.0 parts of n-butyl acrylate and 23.4 parts of n-butyl methacrylate as a monomer (a), 3.0 parts of N-vinylpyrrolidone as a monomer (b), 0.4 parts of acrylic acid as a monomer (c), and 0.43 parts of AIBN were used. Th...

Example

Examples 2 to 14 and Comparative Examples 1 to 7

[0174] An acrylic resin composition, adhesive, optical laminated film and optical laminate were produced according to Example 1 using the acrylic resins (1) and (2) at weight ratios shown in Tables 1-3. Evaluation of the resulted optical laminate was conducted in the same manner as in Example 1, and the results are shown in Tables 1-3 together with that of Example 1. TABLE 1Example1234567AcrylicPolymerization example1-11-21-31-41-51-61-7resin (1)Non-volatile component30303030303030content (part by weight)(a)*191.089.095.586.483.895.291.2(part by weight)(b)*19.011.04.513.68.44.28.8(part by weight)(c)*1000000.60(part by weight)(d)*100007.800(part by weight)Molecular weight (×103)12688.39396.984.870.137.3AcrylicPolymerization example2-32-32-32-32-32-32-3resinNon-volatile component70707070707070(2)*3content (part by weight)(a)*299.499.499.499.499.499.499.4(part by weight)(b)*10000000(part by weight)(c)*10.60.60.60.60.60.60.6(part by weig...

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Abstract

An acrylic resin composition comprising the following acrylic resins (1) and (2): acrylic resin (1): an acrylic resin containing a structural unit derived from a monomer (a) (structural unit (a)) and a structural unit derived from a monomer (b) (structural unit (b)); acrylic resin (2): an acrylic resin having a molecular weight of 1,100,000 to 1,500,000, and containing the structural unit (a) as the main component and a structural unit derived from a monomer (c) (structural unit (c)) and substantially not containing the structural unit (b);
(a): a (meth)acrylate of the formula (A)
(wherein, R1 represents a hydrogen atom or methyl group, R2 represents an alkyl group having 1 to 14 carbon atoms or an aralkyl group having 1 to 14 carbon atoms, and a hydrogen atom in the alkyl group R2 or a hydrogen atom in the aralkyl group R2 may be substituted with an alkoxy group having 1 to 10 carbon atoms.),
(b): a monomer containing an olefinic double bond in the molecule and at least one 5- or more-membered heterocyclic group in the molecule, (c): a monomer not containing 5- or more-membered heterocyclic group and containing one olefinic double bond and at least one polar functional group selected from the group consisting of a carboxyl group, hydroxyl group, amide group, amino group, epoxy group, oxetanyl group, aldehyde group and isocyanate group in the molecule.

Description

TECHNICAL FIELD OF THE INVENTION [0001] The present invention relates to an acrylic resin composition. BACKGROUND OF THE INVENTION [0002] Liquid crystal cells generally used in liquid crystal displays such as a TN liquid crystal cell (TFT), a STN liquid crystal cell (STN) and the like, have a structure in which a liquid crystal component is sandwiched between two glass base materials. On the surface of the glass base material, an optical film such as a polarizing film, phase retardation film and the like is laminated via an adhesive composed mainly of an acrylic resin. An optical laminate composed of a glass base material, adhesive and optical film laminated in this order is in general produced by a method in which first an optical laminated film having an adhesive layer composed of an adhesive laminated on an optical film is obtained, and then, a glass base material is laminated on the surface of the adhesive layer. [0003] Such an optical laminated film tends to generate curl and t...

Claims

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Application Information

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IPC IPC(8): G02B5/30B32B7/06B32B7/12B32B17/10B32B27/30C08F8/00C08L33/04C09J7/02C09J133/00
CPCB32B7/06B32B7/12B32B17/10018Y10T428/1476G02F2202/28Y10T428/2848Y10T428/2887B32B27/30Y10T428/31645Y10T428/31649Y10T428/3188Y10T428/31935C08F20/06C08J5/18B32B27/308B32B2307/40B32B2551/00
Inventor KAWAMURA, AKIRATAKEKO, RYUIWATA, TOMO
Owner SUMITOMO CHEM CO LTD
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