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Adhesive composition and surface protection film

一种组合物、粘结剂的技术，应用在胶粘剂、粘合剂类型、酯共聚物粘合剂等方向，能够解决再加工性易降低、难再次剥离、粘结剂残留等问题，达到耐污染性良好、防止粘结剂残留现象、的平衡性优良的效果

Active Publication Date: 2019-08-30
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] 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

[0121] 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

[0123] 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.

[0124] Table 1

[0125]

[0126]

[0127] [Example 1]

[0128] 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 invention provides an adhesive composition which has excellent antistatic performance, ideal binding power balance at low stripping speed and high stripping speed, and good durability and reprocessability, and a surface protection film. The adhesive composition comprises at least one copolymer acrylic polymer selected from the group of (A) a (methyl) acrylate monomer with C4-C18 alkyl carbon number; (B) a copolymerizable monomer including hydroxy; (C) a copolymerizable monomer including hydroxy; (D)a poly alkylene glycol single (methyl) acrylate monomer, and (E) a vinyl monomer not including hydroxy but including nitrogen or a (methyl) alkyl acrylate monomer including alkoxy, and also comprises (F) a trifunctional isocyanate compound, (G) a difunctional noncyclic aliphatic series isocyanate compound, and (H) an antistatic agent.

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 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 [0002] Conventionally, in the manufacturing process of optical components such as polarizing plates and retardation plates, which are components of liquid crystal displays, a surface protection film is attached to temporarily protect the surface of the optical component. Such a surface protection film is used only in the process of manufacturing an optical component, and when the optical compone...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J151/08C09J7/30
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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