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Adhesive composition and surface protection film

A surface protective film and adhesive technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc. Excellent contamination resistance, prevention of adhesive residues, and excellent balance of effects

Pending Publication Date: 2018-07-20
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Generally, if the adhesive layer is soft, adhesive residues tend to occur and reworkability tends to decrease
That is, it is difficult to peel off again after misfitting, and it is difficult to reattach

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

[0122] Nitrogen gas was introduced into a reaction apparatus equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen introduction pipe, thereby replacing the air in the reaction apparatus with nitrogen. Then, added 100 parts by weight of 2-ethylhexyl acrylate, 3.0 parts by weight of 8-hydroxyoctyl acrylate, 10 parts by weight of polypropylene glycol monoacrylate (forming polyalkylene glycol chain The average repetition number of alkylene oxide n=12), and 60 parts by weight of solvent (ethyl acetate) was added at the same time. 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 acid used in Example 1 with a weight average molecular weight of 500,000. Copolymer Solution 1. A part of the acrylic copolymer was used as a sample for acid value measurement described later.

Embodiment 2～9 and comparative example 1～4

[0124] Except that the composition of each monomer was adjusted as described in (A) to (E) and (H-2) in Table 1, it was carried out in the same manner as the above-mentioned acrylic copolymer solution 1 used in Example 1, Acrylic copolymer solutions used in Examples 2-9 and Comparative Examples 1-4 were obtained.

[0125] Table 1

[0126]

[0127]

[0128] [Example 1]

[0129] To the acrylic copolymer solution 1 of Example 1 produced as described above, 1.5 parts by weight of 1-octylpyridinium hexafluorophosphate was added and stirred, and then 2.0 parts by weight of Coronate HX (coronet HX, hexamethylene The isocyanurate of the diisocyanate compound), 0.5 parts by weight of the difunctional acyclic aliphatic isocyanate compound G-1 of Synthesis Example 1, and then stirred and mixed to obtain the adhesive composition of Example 1. This adhesive composition was coated on a release film composed of a polyethylene terephthalate (PET) film coated with a silicone resin, and ...

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Abstract

The present invention provides an adhesive composition and a surface protection film that have excellent antistatic performance, that have excellent adhesive strength balance at a slow peel rate and at a fast peel rate, and that further also have excellent durability performance and reworking performance. The present invention includes an acrylic-based polymer of a copolymer including: (A) a (meth)acrylic acid ester monomer having a C4 to C18 alkyl group; (B) a hydroxyl group-containing copolymerizable monomer; (C) a carboxyl group-containing copolymerizable monomer; (D) a polyalkylene glycolmono(meth)acrylic acid ester monomer; and (E) a nitrogen-containing vinyl monomer not containing a hydroxyl group or an alkoxy group-containing alkyl (meth)acrylate monomer, and further contains (F) atrifunctional or higher isocyanate compound, (G) a bifunctional non-cyclic aliphatic isocyanate compound, and (H) an antistatic agent.

Description

[0001] The present invention is a divisional application with the application number 201410588424.4, the filing date is October 28, 2014, and the title of the invention is "adhesive composition and surface protection film". This application was filed in Japan on November 20, 2013. Patent application No. 2013-240125 is the basis for claiming priority. technical field [0002] 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 for a surface protection film for protecting the surface of an optical component such as a polarizing plate or a retardation plate by sticking on the surface of an optical component such as a polarizing plate or a retardation plate constituting a liquid crystal display. An adhesive composition, and a surface protection film using the adhesive composition. Background technique [0003] Conventionally, in the manufacturing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J7/40C09J7/30C09J175/04C09J11/06C08F283/06C08F220/18C08F220/20C08F226/10C08G18/73C08G18/32C08G18/28C08G18/62
CPCC09J7/20C09J7/22C09J7/38C09J133/06C09J155/00G02B5/30G02B5/305
Inventor 长仓毅岛口龙介长谷川良新见洋人吉田弘幸菱沼昌世
Owner FUJIMORI KOGYO CO LTD
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