PROCESS FOR PRODUCING CONJUGATED DIENE COPOLYMER RUBBER

Title:

PROCESS FOR PRODUCING CONJUGATED DIENE COPOLYMER RUBBER

Document Type and Number:

WIPO Patent Application WO/2006/013732

Kind Code:

A1

Abstract:

A process for producing a conjugated diene copolymer rubber which comprises: initiating a copolymerization reaction in a reaction system containing a first conjugated diene compound and a first aromatic vinyl compound and completing the reaction; adding a first polyfunctional monomer to the reaction system, optionally further adding a second conjugated diene compound and a second aromatic vinyl compound, and further conducting copolymerization; and subsequently adding a modifier to the reaction system to react them. Thus, a rubber composition can be obtained which has satisfactory processability and comes through vulcanization to have sufficient hardness and reduced rolling resistance.

Inventors:

SHIBATA MASAHIRO (JP)
KOBAYASHI NAOKAZU (JP)
TADAKI TOSHIHIRO (JP)

Application Number:

PCT/JP2005/013414

Publication Date:

February 09, 2006

Filing Date:

July 21, 2005

Export Citation:

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Assignee:

JSR CORP (JP)
SHIBATA MASAHIRO (JP)
KOBAYASHI NAOKAZU (JP)
TADAKI TOSHIHIRO (JP)

International Classes:

C08C19/00; C08F236/10

Foreign References:

JPS4525310B1
JP2003171418A	2003-06-20
JPS332793B1
JPS332794B1
JPS63118343A	1988-05-23
JPS531278A	1978-01-09

Other References: