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Adhesive composition and surface protection film

A composition and adhesive technology, applied in the directions of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of floating, poor re-peelability, etc., and achieve excellent adhesion performance, high utilization value, and excellent resistance. The effect of stripping electrostatic properties

Active Publication Date: 2021-08-24
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if they are used for surface protection of plastic plates with low surface tension and smooth surfaces, there is a problem of peeling such as floating due to heating during processing or storage, or there is a problem of peeling at high speed in the field of manual work. The problem of poor re-peelability

Method used

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  • Adhesive composition and surface protection film
  • Adhesive composition and surface protection film
  • Adhesive composition and surface protection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Nitrogen gas was introduced into a reaction device having a stirrer, a thermometer, a reflux cooler, and a nitrogen gas introduction pipe, and the air in the reaction device was replaced with nitrogen gas. Then, add 90 parts by weight of 2-ethylhexyl acrylate, 10 parts by weight of methyl acrylate, 5.5 parts by weight of 8-hydroxyoctyl acrylate, 0.2 parts by weight of acrylic acid, while adding solvent (ethyl acetate). Then, 0.1 weight part of azobisisobutyronitrile was dripped as a polymerization initiator over 2 hours, and it was made to react at 65 degreeC for 6 hours, and the acrylic polymer solution used in Example 1 was obtained.

Embodiment 2～6 and comparative example 1～3

[0105] Examples 2 to 6 were obtained in the same manner as the acrylic polymer solution used in Example 1 above, except that the compositions of the monomers were as described in (A) to (C) of Table 1, respectively. And the acrylic polymer solution used in Comparative Examples 1-3.

[0106]

[0107] [Example 1]

[0108] To the acrylic polymer solution of Example 1 prepared as described above, 2.0 parts by weight of a crosslinking agent (CORONATE HX), 9 parts by weight of a crosslinking retarder (acetylacetone), and 0.1 parts by weight of a crosslinking agent (CORONATE HX) were added. Catalyst (titanium triacetylacetonate), 0.9 parts by weight of antistatic agent (methyl trioctyl ammonium tris (pentafluorobenzenesulfonyl) methide salt), 0.05 parts by weight of polyether modified siloxane compound (HLB =7) and 0.2 parts by weight of copolymer B-1 (molecular weight: 150,000) were stirred and mixed to obtain the adhesive composition of Example 1. After applying this adhesive c...

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Abstract

The present invention provides an adhesive composition that has an excellent balance of adhesive force at low and high peeling speeds, has stain resistance, excellent adhesive performance, and excellent antistatic performance that does not deteriorate over time. and surface protection film. The adhesive composition contains (A) a (meth)acrylate monomer with an alkyl group having carbon atoms of C1 to C18, (B) a copolymerizable monomer containing a hydroxyl group, and (C) a copolymerizable monomer containing a carboxyl group. An acrylic polymer of a copolymer with an acid value of 0.1 to 1.0 formed by copolymerization of monomers, in 100 parts by weight of (A) (meth)acrylate monomers with alkyl groups having carbon atoms of C1 to C18 , containing 2-ethylhexyl acrylate in a ratio of more than 70 parts by weight; the crosslinking agent is (D) an isocyanate compound with more than three functions; Ionic compounds at ~50°C.

Description

technical field [0001] The invention relates to an adhesive composition containing an antistatic agent and a surface protection film. More specifically, it is a surface protection film used to protect the surface of a polarizer by being attached to a polarizer constituting a liquid crystal display. It has excellent adhesive performance and excellent antistatic performance that does not deteriorate with time. Adhesive composition, and a surface protection film using the adhesive composition. Background technique [0002] Conventionally, in the manufacturing process of optical members, such as a polarizing plate which is a member which comprises a liquid crystal display, the surface protection film for temporarily protecting the surface of an optical member is affixed. Such a surface protection film is used only in the process of manufacturing an optical member, and when attaching an optical member to a liquid crystal display, it peels and removes this from an optical member....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/14C09J11/06C09J11/08C08F220/18C08F220/14C08F220/20C08F220/06
CPCC09J11/06C09J11/08C09J133/066C08F220/18C09J2433/00C08F220/1808C08L83/12C08K5/07C08K5/42C08F220/14C08F220/20C08F220/06C09J133/06C09J11/04C09J7/20G02B5/30C09J2301/312
Inventor 长仓毅大津贺健太郎吉田弘幸铃木史惠菱沼昌世
Owner FUJIMORI KOGYO CO LTD
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