MULTIBLOCK COPOLYMER THE PREPARING METHOD THEREOF

WIPO Patent Application WO/2001/060879

A1

The present invention relates to a multiblock copolymer having the following structure, and the process to prepare the polymer: Y-X-Y, wherein Y is random polymer block of conjugated diene and aromatic vinyl hydrocarbon; X is butadiene homopolymer block, isoprene homopolymer block or butadiene-isoprene copolymer block. The multiblock copolymer of the present invention contains rubber block of conjugated diene-aromatic vinyl hydrocarbon random copolymer and rubber blocks selected from butadiene homopolymer, isoprene homopolymer and butadiene-isoprene copolymer within a single molecule, therefore the block copolymer exhibits excellent properties of the said two kinds of rubber and it is used for integration rubber material which have wide uses. Said integration rubber can be prepared in situ in a single reactor according to the present process.

WO/1998/025977	(METH)ACRYLIC ESTER COPOLYMERS AND PROCESS FOR PRODUCING THE SAME
JP2750525	Description: A method for producing an antistatic agent and a methacrylic resin composition.
JP7025939	Pigment dispersion composition for color filter and resist composition for color filter

LI YANG
HONG DINGYI
GU MINGCHU
YANG JINZONG
WANG YURONG
XU HONGDE
LU XINGJUN
YANG LI
DING JIAN
LV ZHANXIA
LU YONJUN
SONG YUCHUN

PCT/CN2000/000228

August 23, 2001

August 10, 2000

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CHINA PETROLEUM & CHEMICAL (CN)
BEIJING RES INST YANSHAN PETRO (CN)

C08F297/02; C08F297/04; (IPC1-7): C08F297/04; C08F297/00; C08F297/02

US4104331A	1978-08-01
US4782149A	1988-11-01
US5462994A	1995-10-31
US5736612A	1998-04-07
US5583182A	1996-12-10

See also references of EP 1266916A4

CCPIT Patent and Trademark Law Office (2 Fuchengmenwai Street, Beijing 7, CN)

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