Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Adhesive composition and surface protection film

A technology of adhesives and compositions, applied in the directions of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of easy reduction of reworkability, residual adhesive, and difficulty in peeling, so as to reduce the amount of added Quantity, improve the performance of preventing adhesive residue, good antistatic function

Active Publication Date: 2015-03-25
FUJIMORI KOGYO CO LTD
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] 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 after a wrong fit, and it is difficult to reattach

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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 the 2-ethylhexyl acrylate of 100 weight parts, the 8-hydroxyoctyl acrylate of 0.9 weight part, the acrylic acid of 0.5 weight part, the polypropylene glycol monoacrylate of 10 weight parts The average repeating number of alkylene oxide of the alkyl diol chain (n=12), 5 parts by weight of N-vinylpyrrolidone, and 60 parts by weight of solvent (ethyl acetate) were 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) in Table 1, the above-mentioned acrylic copolymer solution 1 used in Example 1 was operated in the same manner to obtain the 2-9 and the acrylic acid copolymer solutions in Comparative Examples 1-4.

[0124] Table 1

[0125]

[0126]

[0127] [Example 1]

[0128] To the acrylic copolymer solution 1 of Example 1 manufactured as described above, 2.5 parts by weight of acetylacetone was added and stirred, and then 1.0 parts by weight of Coronate HX (Coronate HX, isocyanuric acid of a hexamethylene diisocyanate compound) was added. ester), 0.2 parts by weight of Coronate L (the adduct of Coronet L, toluene diisocyanate compound and trimethylolpropane), 0.02 parts by weight of dioctyltin dilaurate and then stirred and mixed to obtain the binder combination of Example 1 things. This adhesive composition was coated on a release film composed of a polyethylene terephthalate (PET) film co...

Embodiment 11

[0166] 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 the 2-ethylhexyl acrylate of 100 weight parts, the 8-hydroxyoctyl acrylate of 0.9 weight part, the acrylic acid of 0.5 weight part, the polypropylene glycol monoacrylate of 10 weight parts The average repeating number of the alkylene oxide of the alkyl diol chain is n=12), 5 parts by weight of N-vinylpyrrolidone, and 60 parts by weight of solvent (ethyl acetate) were 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 taken and used as a sample for acid value measurement described later....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Adhesionaaaaaaaaaa
Adhesionaaaaaaaaaa
Surface resistivityaaaaaaaaaa
Login to View More

Abstract

The invention provides an adhesive composition having excellent anti-static performance, excellent balance in adhesive property at both low stripping speed and high stripping speed, and excellent durability and re-processability, and a surface protection film. The adhesive composition includes an acrylic polymer including at least one copolymer from (A) (meth) acrylate monomers having alkyl groups with the carbon atom number being C4 to C18, (B) copolymerizable monomers containing hydroxyl groups, (C) copolymerizable monomers having carboxyl groups, (D) polyalkylene glycol single (meth) acrylate monomers, and (E) hydroxyl group-free and nitrogen-containing vinyl monomers or a (meth) alkyl acrylate monomers containing alkoxy groups. The adhesive composition further includes (F) an isocyanate composition having more than three functional groups, (G) a cross-linking suppressor, (H) a cross-linking catalyst and (I) an anti-static agent. The acid value of the acrylic polymer is 0.01 to 8.0.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09J133/00C09J133/08C09J11/06C09J7/02G02B1/14
CPCC09J4/00C09J7/20
Inventor 长仓毅岛口龙介长谷川良远藤佳子
Owner FUJIMORI KOGYO CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com