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Adhesive composition, adhesive and optical film

A technology of adhesive and composition, which is applied in the field of optical film, can solve problems that cannot be solved, and achieve the effect of suppressing light leakage and improving durability

Active Publication Date: 2011-05-04
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, in Patent Documents 2 to 5, there are no examples of applying various compositions containing polythiol compounds to adhesives, and the problems of Patent Document 1 described above cannot be solved.

Method used

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  • Adhesive composition, adhesive and optical film
  • Adhesive composition, adhesive and optical film
  • Adhesive composition, adhesive and optical film

Examples

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no. 1 Embodiment approach

[0074] The first embodiment of the present invention is an adhesive composition characterized by containing the following components (A), (B1) and (C) or the following components (A), (B2) and (C) Or following (A), (B1), (B2), (C) component.

[0075] (A) 100 parts by weight of a (meth)acrylate polymer having a weight average molecular weight of 200,000 to 2,500,000,

[0076] (B1) 1 to 100 parts by weight of a reactive (meth)acrylate polymer having a weight average molecular weight of 30,000 to 1,500,000 and having an ethylenic double bond in the side chain,

[0077] (B2) 1 to 50 parts by weight of a polyene compound having two or more ethylenic double bonds in one molecule,

[0078] (C) 0.01 to 50 parts by weight of a polythiol compound having two or more mercapto groups in one molecule.

[0079] that is to figure 1 Adhesive composition 1 used as an example in (a)-(e).

[0080] Hereinafter, the first embodiment of the present invention will be specifically described with r...

no. 2 Embodiment approach

[0234] The second embodiment of the present invention is an adhesive, characterized in that the adhesive is formed through the following steps (1) to (3):

[0235] (1) The preparation is characterized by containing the following (A), (B1), (C) components or the following (A), (B2), (C) components or the following (A), (B1), (B2) ), (C) the operation of the adhesive composition of composition;

[0236] (A) 100 parts by weight of a (meth)acrylate polymer having a weight average molecular weight of 200,000 to 2,500,000,

[0237] (B1) 1 to 100 parts by weight of a reactive (meth)acrylate polymer having a weight average molecular weight of 30,000 to 1,500,000 and having an ethylenic double bond in the side chain,

[0238] (B2) 1 to 50 parts by weight of a polyene compound having two or more ethylenic double bonds in one molecule,

[0239] (C) 0.01 to 50 parts by weight of a polythiol compound having two or more mercapto groups in one molecule,

[0240] (2) A process of applying ...

no. 3 Embodiment approach

[0289] A third embodiment of the present invention is an optical film comprising an adhesive layer containing the adhesive of the second embodiment on a film substrate, wherein the adhesive layer has a The thickness is a value within a range of 1 to 100 μm.

[0290] Below, refer to figure 1 A third embodiment of the present invention will be described in detail.

[0291] 1. Membrane substrate

[0292] As the film base material 101 of the optical film 100 of this invention, if it is a film base material used for an optical film, it will not specifically limit.

[0293] For example, optical films used for liquid crystal displays, such as a polarizing plate, a polarizing layer protective film, a viewing angle expansion film, an antiglare film, and a retardation plate, etc. are mentioned.

[0294] In particular, as long as it is the optical film of the present invention, even when the film base material is a polarizing plate, the occurrence of light leakage can be effectively s...

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Abstract

The present invention provides an adhesive composition, an adhesive and an optical film. An aging treatment period when the adhesive composition is prepared to the adhesive is not required, and performance change of the adhesive is prevented when the adhesive is exposed in a severe environment for a long time period. Furthermore the expansion of the substrate suitable for the adhesive can be restricted thereby preventing performance change. The adhesive composition provided by the invention can settle the problems and is characterized by comprising the components of (A), (B1) and (C); or the components of (A), (B2) and (C); or the components of (A), (B1), (B2) and (C), wherein each component is described as follows: (A) 100 by weight parts of (methyl)acrylate polymer with a weight average molecular ratio of 200 thousand to 2.5 million; (B1) 1-100 by weight parts of reactive (methyl)acrylate polymer which has a weight average molecular ratio of 30 thousand to 1.5 million and has ethylene double bonds at a side chain; (B2) 1-50 by weight parts of polyenic compound which has more than two ethylene double bonds in one module; and (C) 0.01-50 by weight parts of polythiol compound which has more than two sulfhydryl groups in one module.

Description

technical field [0001] The present invention relates to an adhesive composition cured by active energy rays, an adhesive formed from the adhesive composition, and a layer having the adhesive (hereinafter referred to as "adhesive layer") optical film. In particular, it relates to an adhesive composition which has performance equal to or higher than that of existing adhesives and which does not require the conventional aging treatment period, an adhesive formed from the adhesive composition, and an adhesive having the same properties. Mixture layer of optical film. Background technique [0002] Generally, an adhesive can be used for various purposes by applying an adhesive composition containing a polymer as a main component on various adherends or substrates, and volatilizing a diluent solvent to form an adhesive layer. [0003] However, when it is necessary to eliminate harsh conditions such as optical applications or outdoor use, it has been found that it is difficult to ...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J4/02C09J4/06C09J7/02G02B5/30
CPCC09J4/00C09J7/22C09J7/385C09J133/04C09J2203/00C09J2301/302C09J2301/312C09J2301/40C09J2301/416G02B5/3025G02B5/305
Inventor 荒井隆行又野仁所司悟
Owner LINTEC CORP
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