Adhesive compositions and surface protection films

A composition and adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, film/sheet-like adhesives, etc., can solve the problems of difficult re-adhesion, difficult peeling, easy occurrence, etc. , to achieve the effect of improving the performance of preventing the occurrence of adhesive residues

Active Publication Date: 2016-08-03
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 compositions and surface protection films
  • Adhesive compositions and surface protection films
  • Adhesive compositions and surface protection films

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 present invention provides an adhesive composition and a surface protective film which have excellent antistatic properties, are excellent in the balance of adhesive force in low-speed peeling speeds and high-speed peeling speeds, and are durable And reworkability is also excellent. The adhesive composition is composed of (A) a (meth)acrylate monomer with an alkyl carbon number of C4-C10, and (B) a copolymerizable monomer containing a hydroxyl group, and (C) a carboxyl group-containing An acrylic polymer composed of a copolymerizable monomer and (D) a copolymer of a polyalkylene glycol mono(meth)acrylate monomer, which further contains (E) an isocyanate compound having a trifunctional or higher function, (F) Cross-linking inhibitor, (G) cross-linking catalyst, (H) antistatic agent, (I) polyether-modified siloxane compound, the acid value of the acrylic polymer is 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 Patents(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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