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

pressure sensitive adhesive composition

A pressure-sensitive adhesive, pressure-sensitive adhesive layer technology, applied in the direction of adhesive types, ester copolymer adhesives, adhesives, etc., can solve problems such as the difficulty of polarizing plates

Active Publication Date: 2017-08-18
LG CHEM LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not easy to provide a polarizing plate that satisfies the desired performance without a protective film

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
  • pressure sensitive adhesive composition
  • pressure sensitive adhesive composition
  • pressure sensitive adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0111] Preparation Example 1. Preparation of Block Copolymer (A1)

[0112] Mix an appropriate amount of ethyl 2-bromoisobutyrate (EBiB) and methyl methacrylate (MMA) with ethyl acetate (EAc), seal the flask containing the mixture with a rubber membrane, purged with nitrogen and store at 25 °C. Stir for about 30 minutes to remove dissolved oxygen. After that, an appropriate amount of CuBr 2 , tris(2-pyridylmethyl)amine (TPMA) and tin(II) 2-ethylhexanoate (Sn(EH) 2 ) was added to the oxygen-removed mixture and maintained at about 67° C. in the reaction vessel to initiate the reaction (polymerization of the first block). At a conversion of methyl methacrylate of about 70% to 95%, a mixture of butyl acrylate (BA) and hydroxyethyl acrylate (HEA), previously sparged with nitrogen, was added to have the Ratio of final block copolymer. After that, the CuBr 2 , TPMA and Sn(EH) 2 Added to reaction flask for chain extension reaction (polymerization of second block). When the con...

preparation Embodiment 2 and 3

[0113] Preparation Examples 2 and 3. Preparation of Block Copolymers (B1 and C1).

[0114] A block copolymer was prepared by the same method as described in Preparation Example 1 except controlling the monomer weight ratio of the first block to the second block as shown in Table 1.

[0115] [Table 1]

[0116]

preparation Embodiment 4

[0117] Preparation Example 4. Preparation of Random Copolymer (D1)

[0118] Random copolymers were prepared by adding a monomer mixture comprising butyl acrylate (BA) and 2-hydroxyethyl acrylate (HEA) in a ratio of 80:20 (BA:HEA) to a cooling unit equipped with In a 1-liter reactor with nitrogen reflux and temperature control, add an appropriate amount of n-dodecylmercaptan under molecular weight control, then add ethyl acetate as a solvent, purify with nitrogen for about 60 minutes to remove oxygen, add Azobisisobutyronitrile (AIBN) was used as an initiator while maintaining the temperature at 60° C., and the reaction was performed for about 8 hours. The prepared random copolymer (B4) had a number average molecular weight (Mn) of about 220,000 and a polydispersity index (PDI) of about 5.0.

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
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The present invention relates to pressure sensitive adhesive compositions. The pressure-sensitive adhesive composition of the present application is a pressure-sensitive adhesive having a microscopic phase-separated structure due to a block copolymer comprising a hard segment and a soft segment; pressure sensitive adhesives. Even when, for example, a pressure-sensitive adhesive is used on a thin-structured polarizing plate that does not use a polarizer protective film on at least one surface, the polarizing plate can exhibit excellent durability, moisture resistance, handleability, pressure-sensitive adhesion performance, the ability to suppress light leakage, etc.

Description

technical field [0001] The present invention relates to a pressure-sensitive adhesive composition, a polarizing plate, and a display device. Background technique [0002] A liquid crystal display (LCD) may include a liquid crystal panel including liquid crystals present between transparent substrates and polarizing plates attached to both sides of the liquid crystal panel. [0003] The polarizer has such figure 1 structure shown. That is, the polarizing plate 100 may include a polarizer 101 having a polarizing function; and polarizer protective films 1021 and 1022 adhered on both surfaces of the polarizer 101, respectively. The polarizing plate 100 may include a pressure sensitive adhesive layer 103 formed under the protective film 1022 for adhesion to the liquid crystal panel, and a release film 104 formed under the pressure sensitive adhesive layer 103 . Additionally, not shown in figure 1 Among them, the polarizing plate may include additional functional films, such a...

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 Patents(China)
IPC IPC(8): C09J133/04C09J7/02G02B5/30G02F1/13C09J7/22C09J7/38
CPCG02B5/3025G02F2202/28C09J2203/318C09J2433/00C09J7/38C09J7/387C09J7/22Y10T428/2852C09J2453/00G02F1/133528C08F220/18C09J133/06G02B5/30G02B5/305G02F1/13C09J153/00C09J133/10C09J133/08C09J7/30G02B1/14C09J153/005G02B5/3033
Inventor 尹正爱金鲁马黄仁浩朴寅圭金旼俊金秀静
Owner LG CHEM 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