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Adhesive composition and surface-protective adhesive film

A technology of adhesives and compositions, applied in the direction of adhesive types, ester copolymer adhesives, film/sheet adhesives, etc., can solve the difficulty of re-attachment, difficulty of peeling, and easy reduction of rework and other problems, to achieve the effect of improving the performance of preventing adhesive residue

Active Publication Date: 2013-09-18
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] In general, if the adhesive layer is made flexible, adhesive residue tends to occur and reworkability tends to decrease
That is, it is difficult to peel off and reattach when it is easy to attach by mistake

Method used

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  • Adhesive composition and surface-protective adhesive film
  • Adhesive composition and surface-protective adhesive film
  • Adhesive composition and surface-protective adhesive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Nitrogen was introduced into a reaction apparatus equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen introduction tube, and the air in the reaction apparatus was replaced with nitrogen. Then, add 100 parts by weight of 2-ethylhexyl acrylate, 0.9 parts by weight of 8-hydroxyoctyl acrylate, 0.5 parts by weight of acrylic acid, 3 parts by weight of polyethylene glycol monoacrylate and solvent (ethyl acetate ester) 60 parts by weight. Then, 0.1 part by weight of azobisisobutyronitrile as a polymerization initiator was dropped over 2 hours, and reacted at 65° C. for 6 hours to obtain the acrylic copolymer solution used in Example 1 with a weight average molecular weight of 500,000. 1. A part of the acrylic copolymer was extracted and used as a sample for the following acid value measurement.

Embodiment 2～9 and comparative example 1～9

[0107] The composition of the monomers was set as described in (A) to (D) and (H2) of Table 1, except that it was the same as the acrylic copolymer solution 1 used in the above-mentioned Example 1, The acrylic copolymer solutions used in Examples 2-9 and Comparative Examples 1-9 were obtained.

[0108]

[0109] [Example 1]

[0110] As mentioned above, for the prepared acrylic copolymer solution 1 (wherein the acrylic copolymer is 100 parts by weight), add 1.5 parts by weight of 1-octylpyridinium hexafluorophosphate, KF-351A (of HLB=12 Polyether-modified siloxane compound) 0.1 parts by weight, acetylacetone 2.5 parts by weight and stirred, then add Coronet HX (isocyanurate body of hexamethylene diisocyanate compound) 1.5 parts by weight, dilauric acid di After adding 0.02 parts by weight of octyltin, it was stirred and mixed to obtain the adhesive composition of Example 1. After applying this adhesive composition on a release film made of a silicone resin-coated polyethylen...

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Abstract

The invention provides an adhesive composition and a surface-protective adhesive film, which have excellent electrical resistance and excellent adhesive balance, durability and rework performance during peeling in high speed and low speed. The adhesive composition contains (A) acrylate monomer (methyl) containing alkyl carbons of C4-C10, (B) comonomer containing hydroxyl, (C) comonomer containing carboxyl and (D) acrylic polymer of copolymer of poly alkylene glycol single (meth) acrylate monomer. The adhesive composition further contains (E) over three-functional isocyanate compound, (F) crosslinking inhibitor, (G) Crosslinking catalyst, (H) antistatic agent and (I) polyether modified siloxane compound, wherein the acid value of the acrylic polymer ranges from 0.01-8.0.

Description

technical field [0001] This invention relates to the surface protection film used in the manufacturing process of a liquid crystal display. More specifically, the present invention relates to an adhesive combination for a surface protection film that is bonded to the surface of an optical member such as a polarizing plate or a retardation plate constituting a liquid crystal display, and protects the surface of an optical member such as a polarizing plate or a retardation film. objects, and the surface protection film using it. Background technique [0002] Conventionally, in the manufacturing process of optical components such as polarizing plates and retardation plates constituting a liquid crystal display, a surface protection film is temporarily bonded to the surface of the optical component. When assembling an optical member into a liquid crystal display, the surface protection film is peeled and removed from an optical member. Surface protection films are used only in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/00C09J133/08C09J7/02
CPCC09J7/22C09J7/38C09J7/385C09J7/40C09J133/04C09J2203/318C09J2301/302C09J2301/312C09J2301/408G02B5/3025G02B5/305
Inventor 长仓毅岛口龙介
Owner FUJIMORI KOGYO CO LTD
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