Title:
COMPOSITION OF BLOCK COPOLYMER, ITS MANUFACTURING METHOD AND ADHESIVE COMPOSITION
Document Type and Number:
Japanese Patent JP2003342441
Kind Code:
A
Abstract:
To provide a composition based on a radial polystyrene-polyisoprene block copolymer usable as a more excellent adhesive ingredient.
The composition comprising poly-aromatic vinyl-polyisoprene block copolymer is obtained by reacting a di-block product with a tetra- functional coupling agent in the presence of a tertiary amine polyamine(s), comprises (a) 1-34 wt.% di-block product, (b) 34-99 wt.% tetra-branched product and (c) 0-50 wt.% di- and/or tri-branched product and has a weight average molecular weight (Mw) of the whole composition of 260,000-500,000 and a content of poly-aromatic vinyl block of 5-24 wt.%.
Inventors:
KOMATSUZAKI SHIGERU
MATSUBARA TETSUAKI
ISHIHARA JUN
MATSUBARA TETSUAKI
ISHIHARA JUN
Application Number:
JP14846198A
Publication Date:
December 03, 2003
Filing Date:
May 13, 1998
Export Citation:
Assignee:
NIPPON ZEON CO
International Classes:
C08F297/04; C08L53/02; C09D153/02; C09J153/02; C09J201/00; (IPC1-7): C08L53/02; C09J153/02; C09J201/00
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