公开(公告)号：JP2004190001A

公开(公告)日：2004-07-08

申请号：JP2003174074

申请日：2003-06-18

申请人： Korea Kumho Petrochem Co Ltd ,  コリア クンホ ペトロケミカル カンパニー リミテッド

发明人： KO YUN-FUUN ,  KOH JAE-YOUNG ,  CHOI HUNG-KYU ,  BAIK HUN-JONG

IPC分类号： C08F212/08 ,  B60C1/00 ,  C08C19/42 ,  C08C19/44 ,  C08F236/10 ,  C08G81/02

CPC分类号： B60C1/0016 ,  C08C19/42 ,  C08C19/44 ,  C08F236/10 ,  Y02T10/862

摘要： PROBLEM TO BE SOLVED: To provide a copolymer in a radial form, obtained by together coupling terminals of molecules by using a mixed coupling agent comprising a mixture of a polyvalent polysiloxane and a tin halide, and useful for tire production.
SOLUTION: This copolymer in the radial is obtained by together coupling the terminals of living polymers by using the mixed coupling agent, wherein the living polymer is obtained by copolymerizing a conjugated diene-based monomer and a vinyl aromatic monomer in a hydrocarbon solvent in the presence of a Lewis base and an organic lithium catalyst, and the mixed coupling agent comprises the mixture of the polyvalent polysiloxane expressed by chemical formula 1: (X)
a (R)
b Y-(CH
2 )
c -Si(R
1 )(R
2 )-[O-Si(R
1 )(R
2 )]
d -(CH
2 )
c -Y(X)
a (R)
b and the tin halide expressed by chemical formula 2: Sn(R)
4-n (X)
n .
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