Title:
ACRYLIC COPOLYMER, ACRYLIC PRESSURE-SENSITIVE ADHESIVE COMPOSITION, ACRYLIC PRESSURE-SENSITIVE ADHESIVE TAPE OR SHEET, AND ACRYLIC ADHESIVE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2000/068288
Kind Code:
A1
Abstract:
An acrylic copolymer having polymer segments differing in polarity and glass transition point. The combination of these polymer segments differing in polarity and glass transition point can be easily regulated, and the copolymer has a high degree of freedom of design. It is usable in a wide range of applications. The acrylic copolymer is obtained by copolymerizing (a) an alkyl (meth)acrylate having a C¿1-14? alkyl group, (b) an olefin (co)polymer terminated by a radical-polymerizable unsaturated double bond, and (c) a polymer terminated by a radical-polymerizable unsaturated double bond and having a number-average molecular weight of 2,000 to 30,000 and a glass transition temperature of 30°C or higher, and comprises a backbone polymer consisting mainly of units of the alkyl (meth)acrylate (a) and, grafted to the backbone, polymeric branches which have low polarity and differ in glass transition point.
Inventors:
FUKUOKA MASATERU (JP)
NAKASUGA AKIRA (JP)
MIYASHITA HIRAKU (JP)
NOSETANI HAJIME (JP)
NAKASUGA AKIRA (JP)
MIYASHITA HIRAKU (JP)
NOSETANI HAJIME (JP)
Application Number:
PCT/JP2000/001154
Publication Date:
November 16, 2000
Filing Date:
February 28, 2000
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
FUKUOKA MASATERU (JP)
NAKASUGA AKIRA (JP)
MIYASHITA HIRAKU (JP)
NOSETANI HAJIME (JP)
FUKUOKA MASATERU (JP)
NAKASUGA AKIRA (JP)
MIYASHITA HIRAKU (JP)
NOSETANI HAJIME (JP)
International Classes:
C08F290/04; C09J7/02; (IPC1-7): C08F290/04; C08F293/00; C08G81/00; C09J7/02; C09J133/04; C09J153/00; C09J155/00
Foreign References:
| JPH0940784A | 1997-02-10 | |||
| EP0406906A2 | 1991-01-09 | |||
| GB223549A | 1925-04-30 | |||
| JPH01315409A | 1989-12-20 | |||
| JPH0860118A | 1996-03-05 | |||
| JPH0665440A | 1994-03-08 | |||
| JPH0220527A | 1990-01-24 | |||
| JPS5659882A | 1981-05-23 | |||
| JPS6462318A | 1989-03-08 | |||
| JPH10183085A | 1998-07-07 |
Other References:
See also references of EP 1211269A4
Attorney, Agent or Firm:
Miyazaki, Chikara (Tanimachi 1-chome Chuo-ku Osaka-shi, Osaka, JP)
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