Adhesive composition and surface protection film

A composition and adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, graft polymer adhesives, etc., can solve the problems of difficulty in re-adhesion, difficulty in peeling, and easy occurrence, etc. Achieving the effect of improving the performance of preventing the occurrence of adhesive residues

Active Publication Date: 2015-10-14
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 protection film
  • Adhesive composition and surface protection film
  • Adhesive composition and surface protection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111]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, 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, N-vinyl 5 parts by weight of pyrrolidone and 60 parts by weight of solvent (ethyl acetate). 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

[0113] The composition of the monomers was set as described in (A) to (E) and (I-2) of Table 1. Other than that, it was the same as the acrylic copolymer solution 1 used in the above-mentioned Example 1. Accordingly, the acrylic copolymer solutions used in Examples 2-9 and Comparative Examples 1-9 were obtained.

[0114] [Table 1]

[0115]

[0116]

[0117]

[0118] [Example 1]

[0119] For the acrylic copolymer solution 1 of Example 1 prepared as described above, 1.5 parts by weight of 1-octylpyridinium hexafluorophosphate, a polyether-modified siloxane compound of KF-351A (HLB=12) were added ) 0.2 parts by weight, 2.5 parts by weight of acetylacetone and stirred, then added 1.5 parts by weight of Coronet HX (isocyanurate body of hexamethylene diisocyanate compound), 0.02 parts by weight of dioctyltin dilaurate, and 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-...

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Abstract

The invention provides an adhesive composition and surface-protective film. The adhesive composition has excellent antistatic performance, the balance of adhesive force is excellent in low-speed stripping and high-speed stripping, and the durability and the reworkability are excellent. The invention provides an adhesive composition, which consists of (A) (methyl) acrylate monomers containing C4 to C10 of alkyl group carbon atoms, (B) hydroxyl group-containing copolymerizable monomers, (C) carboxyl group-containing copolymerizable monomers, (D) poly- alkylene glycol mono(methyl) acrylate monomers, and (E) an acrylic acid polymer of a copolymer of hydroxyl group-free nitrogen-containing vinyl monomers or alkoxy-containing (methyl) acrylic acid alkyl ester monomers, and further contains (F) a tri- or higher functional isocyanate compound, (G) a crosslinked inhibitor, (H) a crosslinked catalyzer, (I) an antistatic agent, and (J) a polyether-modified siloxane compound, wherein the acid value of the abovementioned acrylic acid polymer is 0.01 to 8.0.

Description

technical field [0001] This invention relates to the surface protection film used for 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 that constitute components of liquid crystal displays, 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. A surface protection fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J151/08C09J7/02C08F290/06
CPCC09J7/22C09J7/38C09J7/385C09J133/04C09J175/04C09J2203/318C09J2301/302C09J2301/312C09J2301/408G02B5/3025G02B5/305
Inventor 长仓毅岛口龙介
Owner FUJIMORI KOGYO CO LTD
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