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Title:
ACRYLIC COPOLYMER, ACRYLIC ADHESIVE COMPOSITION AND ACRYLIC ADHESIVE TAPE OR SHEET
Document Type and Number:
Japanese Patent JP2000219746
Kind Code:
A
Abstract:

To provide an acrylic copolymer which has polymer components with different polarities and glass transition temperatures, allows easy regulation of combinations of such polymer components having different polarities and glass transition temperatures, exerts a high degree of freedom in its design and is applicable to a wide range of use.

This copolymer is prepared by copolymerizing an alkyl (meth) acrylate (a) having an 1-14C alkyl group, an olefin polymer or copolymer (b) having a terminal modified with a radical-polymerizable unsaturated double bond and a polymer (c) having a terminal modified with a radical-polymerizable unsaturated double bond, a number average molecular weight of 2,000 to 30,000 and a glass transition temperature of 30°C or higher. Here, a branched polymer component having a low polarity and a different glass transition temperature is grafted to a stem polymer component mainly comprising the alkyl (meth) acrylate (a).


Inventors:
FUKUOKA MASATERU
NAKASUGA AKIRA
MIYASHITA HIROSHI
NOSETANI HAJIME
Application Number:
JP1999000127066
Publication Date:
August 08, 2000
Filing Date:
May 07, 1999
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
C09J7/02; C08G81/02; C09J133/04; C09J153/00; C09J201/00; (IPC1-7): C08G81/02; C09J7/02; C09J133/04; C09J153/00