Adhesive composition and surface protection film

A composition and adhesive technology, applied in the direction of adhesive type, ester copolymer adhesive, polymer adhesive additive, etc., can solve problems such as difficulty in re-attachment, difficulty in peeling, and easy reduction in reworkability , to improve the performance of preventing adhesive residue, excellent effect of preventing adhesive residue

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

[0016] 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

[0088] 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

[0090] The composition of each monomer was set as described in (A) to (D) of Table 1, and Example 2 was obtained in the same manner as the acrylic copolymer solution 1 used in Example 1 above, except that ~9 and the acrylic copolymer solutions used in Comparative Examples 1-9.

[0091]

[0092] [Example 1]

[0093] As mentioned above, for the prepared acrylic copolymer solution 1 (wherein the acrylic copolymer is 100 parts by weight), add 0.1 parts by weight of KF-351A (polyether-modified siloxane compound with HLB=12), acetyl After stirring 2.5 parts by weight of acetone, 1.5 parts by weight of Coronet HX (isocyanurate body of a hexamethylene diisocyanate compound) and 0.02 parts by weight of dioctyltin dilaurate were added and mixed to obtain the bonding agent of Example 1. agent composition. After applying this adhesive composition on a release film made of a silicone resin-coated polyethylene terephthalate (PET) film, the solvent was removed by drying at 90°C to obtain...

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PUM

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Abstract

The present invention provides an adhesive composition and a surface protection film which are excellent in the balance of adhesive force in low-speed peeling speed and high-speed peeling speed, and are also excellent in durability and rework performance. 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 monomer containing a carboxyl group. 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) The crosslinking inhibitor, (G) crosslinking catalyst, (H) polyether-modified siloxane compound, and the acid value of the above-mentioned acrylic polymer are 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. Surface protection films...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/00C09J133/08C09J11/06C09J11/08C09J7/02C08J3/24G02B5/30
CPCC09J7/22C09J7/38C09J7/385C09J7/40C09J133/04C09J2203/00C09J2301/302C09J2301/312C09J2301/408G02B5/3025G02B5/305
Inventor 长仓毅岛口龙介
Owner FUJIMORI KOGYO CO LTD
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