Acrylic resin

An acrylic resin and alicyclic technology, applied in the direction of synthetic resin layered products, adhesive types, film/sheet adhesives, etc., can solve problems such as light leakage, curling and peeling of optical lamination films

Inactive Publication Date: 2005-11-02
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Such optical laminate films tend to curl due to large dimensional changes caused by expansion and contraction under heating or humidification and heating conditions, and thus there are problems such as the following: In the adhesive layer of the obtained optical laminate Foaming occurs in the middle, peeling occurs between the adhesive layer and the glass matrix material, etc.
[0004] However, there is a problem that when a liquid crystal cell prepared using an optical laminate having an adhesive layer is kept under humidified and heated conditions, the adhesive layer is made of an adhesive that The adhesive is mainly composed of acrylic resin with a structural unit derived from N-vinylpyrrolidone, there will be a problem of light leakage, and the durability will be poor

Method used

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  • Acrylic resin
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0154]

[0155] The acrylic resin solution prepared in Polymerization Example 1 was used as the solution of the acrylic resin (1). 150 parts of ethyl acetate were added to 100 parts of non-volatile components in the acrylic resin (1) to prepare an ethyl acetate solution of an acrylic resin composition having a non-volatile component content of 19.5%. In 100 parts of nonvolatile components in the resulting solution, 0.8 parts of a polyisocyanate-based compound (trade name: Takenate D-160N, manufactured by Mitsui-Takeda Chemical Inc.) and 0.4 parts of a silane-based compound (trade name Name: KBM-403, manufactured by Shin-Etsu Silicone) was used as a crosslinking agent to prepare the adhesive of the present invention.

[0156]

[0157]Using an applicator, the adhesive thus prepared was coated on the surface of a release-treated polyethylene terephthalate film (manufactured by LINTEC Corporation, trade name: PET3811), which had been subjected to a release treatment. , so the...

Embodiment 2 to 8 and comparative Embodiment 1 to 3

[0178] According to Example 1, using the acrylic resins (1) and (2) in the weights shown in Table 2, acrylic resin compositions, adhesives, optical laminate films and optical laminates were prepared. The obtained optical laminate was evaluated in the same manner as in Example 1, and the results are shown in Table 2 together with the results of Example 1.

[0179] In Comparative Examples 1 and 2, an adhesive composed only of the acrylic resin (2), that is, an adhesive composed of an acrylic resin not containing the structural unit (b) was used, and in Comparative Example 3, An adhesive composed of an acrylic resin (2) composition was used.

[0180] Example

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PUM

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Abstract

An acrylic resin (1) comprising a structural unit (structural unit (a)) derived from the following monomer (a) and a structural unit (structural unit (b)) derived from the following monomer (b): (a ): (meth)acrylic acid ester of general formula (A): (wherein R1 represents a hydrogen atom or a methyl group, R2 represents an alkyl group of 1 to 14 carbon atoms or an aralkyl group of 1 to 14 carbon atoms group, and the hydrogen atom in the alkyl group R2 or the hydrogen atom in the aralkyl group R2 may be replaced by an alkoxy group of 1 to 10 carbon atoms), and (b): in the molecule (The ethylenic double bond contained in (b) may be contained in the alicyclic structure).

Description

technical field [0001] This invention relates to acrylic resins and acrylic resin compositions. Background technique [0002] A liquid crystal cell generally used for a liquid crystal display, such as a TN liquid crystal cell (TFT), an STN liquid crystal cell (STN), etc., has 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, a phase retardation film, and the like is laminated by means of an adhesive mainly composed of an acrylic resin. An optical laminate consisting of a glass base material, an adhesive, and an optical film, which are laminated in this order, is generally produced by a method in which an adhesive composed of an optical film laminated on an optical film is first produced A first optical lamination film having an adhesive layer, and then laminating a glass matrix material on the surface of the adhesive layer. [0003] Such optic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/02B32B27/00C08F8/00C08F220/10C08F220/18C09J7/02C09J133/08C09J133/10C09J175/04
CPCC08F220/18C08F220/06C08F220/1804A41D1/04A41D13/015A41D13/0512A41D27/26A41D2600/20
Inventor 竹厚流河村晃岩田智
Owner SUMITOMO CHEM CO LTD
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