Title:
PRESSURE-SENSITIVE ADHESIVE COMPOSITION, PRESSURE-SENSITIVE ADHESIVE, AND PRESSURE-SENSITIVE ADHESIVE SHEET
Document Type and Number:
Japanese Patent JP2014221898
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive composition which is excellent in both light leakage resistance and durability when applied to an optical member such as a polarizing plate, and to provide a method for producing the pressure-sensitive adhesive composition, a pressure-sensitive adhesive, and a pressure-sensitive adhesive sheet.SOLUTION: The pressure-sensitive adhesive composition contains: 100 pts.mass of a first (meth)acrylate polymer (A) having a weight-average molecular weight of 700,000-2,500,000; 5-40 pts.mass of a second (meth)acrylate polymer (B) having a weight-average molecular weight of 8,000-250,000; and a crosslinking agent (C). The polymer (B) contains as a constituent only a monomer having a functional group (b1) reactive with the crosslinking agent (C) in an amount of 1-50 mass%. The polymer (A) does not contain as a constituent a monomer having a functional group reactive with the crosslinking agent (C) or contains as a constituent a monomer having a functional group (a1) which has lower reactivity with the crosslinking agent (C) than the functional group (b1) of the polymer (B).
Inventors:
ARAI TAKAYUKI
MATANO HITOSHI
SHOSHI SATORU
MATANO HITOSHI
SHOSHI SATORU
Application Number:
JP2014119958A
Publication Date:
November 27, 2014
Filing Date:
June 10, 2014
Export Citation:
Assignee:
LINTEC CORP
International Classes:
C09J133/08; B32B27/00; C09J7/02; C09J11/06; C09J133/10; C09J133/14
Domestic Patent References:
| JP2007126559A | 2007-05-24 | |||
| JP2002241708A | 2002-08-28 | |||
| JP2000109771A | 2000-04-18 | |||
| JP2003049141A | 2003-02-21 | |||
| JP2009215522A | 2009-09-24 | |||
| JP2002121521A | 2002-04-26 |
Foreign References:
| US20090229733A1 | 2009-09-17 |
Attorney, Agent or Firm:
Yuji Hayakawa
Passing shower Keisuke
Passing shower Keisuke