Adhesive combination and surface protective film

A composition and adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, polyurea/polyurethane adhesives, etc., can solve the problems of easy reduction of reworkability, difficulty in peeling, and easy occurrence, etc. Achieve the effect of preventing adhesive residue and excellent antistatic performance

Active Publication Date: 2012-10-24
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] 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 combination and surface protective film
  • Adhesive combination and surface protective film
  • Adhesive combination and surface protective film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Nitrogen was introduced into a reaction device equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen introduction pipe, and the air in the reaction device 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, and 60 parts of solvent (ethyl acetate) were added to the reaction device. Then, 0.1 parts by weight of azobisisobutyronitrile as a polymerization initiator was dropped over 2 hours, and reacted at 65°C for 6 hours to obtain acrylic copolymer solution 1 used in Example 1 with a weight average molecular weight of 500,000 .

Embodiment 2～9 and comparative example 1～9

[0092] The composition of the monomers was set as described in (A) to (C) of Table 1. Except for this, in the same manner as in the acrylic copolymer solution 1 used in Example 1 above, Examples 2 to were obtained. 9 and the acrylic copolymer solution used in Comparative Examples 1-9.

[0093]

[0094] [Example 1]

[0095] As described above, to the prepared acrylic copolymer solution 1 (wherein the acrylic copolymer is 100 parts by weight), 1.5 parts by weight of 1-octylpyridinium hexafluoride phosphate, KF-351A (HLB=12 polyether Modified siloxane compound) 0.1 parts by weight, 2.5 parts by weight of acetylacetone and stirring, add 1.5 parts by weight of Corone HX (isocyanurate body of hexamethylene diisocyanate compound), dilauric acid After 0.02 part by weight of octyltin, the mixture was stirred and mixed to obtain the adhesive composition of Example 1. After applying the adhesive composition on a release film made of a silicone resin-coated polyethylene terephthalate (PET) f...

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Abstract

The present invention provides an adhesive combination and a surface protective film. The adhesive combination and the surface protective film can simultaneously satisfy the all required performances about: (1) obtaining balance of adhesive forces in a low-speed peeling field and a high-speed peeling field; (2) preventing occurrence of remaining of the adhesive; (3) having an excellent antistatic performance; and (4) having a reworkable property. The present invention provides an adhesive combination consisting of a copolymer containing (A) a (methyl)acrylate monomer having alkyl carbon atom number from C4 to C10, (B) a copolymerizable monomer containing hydroxyl, and (C) a copolymerizable monomer containing carboxyl, in addition, the adhesive combination further contains (D) an isocyanate compound having more than three functional groups, (E) a crosslinking inhibitor, (F) a crosslinking catalyst, (G) an antistatic agent, and (H) a polyether modified siloxane compound.

Description

Technical field [0001] The present invention relates to a surface protection film used in the manufacturing process of a liquid crystal display. More specifically, the present invention relates to an adhesive composition for a surface protection film used for protecting the surface of optical components such as a polarizing plate and a phase difference plate constituting a liquid crystal display, and a surface protection film using the same. Background technique [0002] Conventionally, in the manufacturing process of optical components, such as a polarizing plate and a phase difference plate which are components of a liquid crystal display, a surface protection film is attached in order to temporarily protect the surface of an optical component. Such a surface protection film is used only in the process of manufacturing an optical component, and it is peeled and removed from the optical component when the optical component is assembled in a liquid crystal display. In this way, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/00C09J133/08C09J7/02
CPCC09J4/00C09J7/22C09J7/385C09J7/40C09J175/04C09J2203/318C09J2301/312C09J2301/408G02B5/3025
Inventor 长仓毅岛口龙介
Owner FUJIMORI KOGYO CO LTD
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