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

Adhesive composition and film for optical member

A composition and adhesive technology, applied in the direction of optical components, adhesive types, ester copolymer adhesives, etc. Excellent glue transfer viscosity, suppressing static electricity

Active Publication Date: 2013-12-18
NIPPON CARBIDE KOGYO KK
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for the adhesive composition described in Japanese Patent Laid-Open No. 2009-275128 to satisfy all the requirements for suppression of static electricity caused by peeling electrification, adhesiveness, and adhesive transfer resistance.

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 film for optical member
  • Adhesive composition and film for optical member
  • Adhesive composition and film for optical member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0128] The effects of the present invention will be specifically described below with examples and comparative examples, but the present invention is not limited by these examples. Moreover, unless otherwise indicated, "part" and "%" are mass standards.

[0129] Production of acrylic copolymer (A) solution

manufacture example A－1）

[0131] 35.0 parts by mass of ethyl acetate were added to a reaction container equipped with a thermometer, a stirrer, a nitrogen gas introduction pipe, and a reflux cooler. In another container, 55.0 parts by mass of 2-ethylhexyl acrylate (2EHA), 42.0 parts by mass of n-butyl acrylate (BA), and 3.0 parts by mass of 4-hydroxybutyl acrylate (4HBA) were added and mixed to prepare monomer The mixture, 15% by mass of which was charged into a reaction vessel, was then heated to reflux temperature while stirring under a nitrogen atmosphere. Thereafter, a mixed solution obtained by mixing the entire amount of the remaining monomer mixture, 10 parts by mass of ethyl acetate, 10 parts by mass of toluene, and 0.1 parts by mass of azobisisobutyronitrile was gradually added to the reaction at the reflux temperature over 100 minutes. container, then reacted for 45 minutes while maintaining reflux temperature. Thereafter, a solution obtained by mixing 15 parts by mass of ethyl acetate and 0...

manufacture example A－2～A

[0133] (Manufacturing examples A-2 to A-12)

[0134] Solutions of acrylic copolymers (A-2) to (A-12) were produced in the same manner as in Production Example A-1, except that the monomer composition was changed to the monomer composition shown in Table 1, and the initiator amount was appropriately adjusted. . Table 1 shows the solid content, glass transition temperature (Tg), weight average molecular weight (Mw), and degree of dispersion (Mw / Mn) of the obtained acrylic copolymer solution.

[0135] [Table 1]

[0136]

[0137] Production of polyoxyalkylene-containing copolymer (B)

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
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The present invention provides an adhesive composition comprising: an acrylic copolymer (A) containing 40%-80% by mass of a constituent unit derived from a (meth) acrylate alkyl ester having a C1-5 alkyl group, 10%-59.9% by mass of a constituent unit derived from a (meth) acrylate alkyl ester having a C6-18 alkyl group, and 0.1%-10% by mass of a constituent unit derived from a monomer having a hydroxyl group; a polyoxyalkylene group-containing copolymer (B) having a weight-average molecular weight of 3,000-100,000 and containing up to 60% by mass of a constituent unit derived from a polyoxyalkylene group-containing monomer having an alkylene oxide average addition molar number of at least 20; an alkali metal salt (C); and a dimethylpolysiloxane compound (D) having a polyoxyalkylene group in each molecule and an HLB value of no more than 9.

Description

technical field [0001] The present invention relates to an adhesive composition and a film for optical members. Background technique [0002] Liquid crystal display panels have been used in recent years as screen display devices for various information-related devices, such as personal computers, due to their thinness, light weight, and low power consumption. In such a liquid crystal display panel, optical members such as a polarizing plate and a retardation plate are used together with a main glass cell (liquid crystal cell) containing a liquid crystal. [0003] These optical members are usually bonded and coated with a surface protection film and formed in the form of a long optical member laminate so that the surface will not be damaged during various processes such as punching, inspection, transportation, and assembly of liquid crystal display panels. contamination or damage. Thereafter, the surface protection film is peeled and removed from the optical member at a sta...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/06C09J7/02C09J11/02C09J133/08C09J133/14C09J183/12G02B5/30C09J7/20C09J7/22C09J7/38
CPCG02B5/30C08G77/46C08L2205/025C09J2203/318C09J2433/00C09J2483/00C08K3/105C09J7/20C09J7/38C09J7/22Y10T428/2857C09J133/08C09J2301/408C09J11/02C09J133/06C09J133/14C09J183/12G02B5/3033C09J2301/40
Inventor 鸭井彬宫崎英树
Owner NIPPON CARBIDE KOGYO KK
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