Title:
BUTADIENE POLYMER AND PROCESS FOR PRODUCING THE SAME, AND RUBBER COMPOSITION AND TIRE COMPRISING OR MADE FROM THE SAME
Document Type and Number:
WIPO Patent Application WO/2005/000921
Kind Code:
A1
Abstract:
A butadiene polymer which has a high content of cis-1,4 bonds and a low content of vinyl bonds and has a molecular-weight distribution in a specific range. The butadiene polymer, which contains 1,3-butadiene monomer units, is characterized in that the 1,3-butadiene monomer units have a cis-1,4 bond content and a vinyl bond content, as determined by Fourier transform infrared spectroscopy, of 98.0% or higher and 0.3% or lower, respectively, and that the ratio of the weight-average molecular weight (Mw) to the number-average molecular weight (Mn), (Mw/Mn), is from 1.6 to 3.5.
Inventors:
SUZUKI EIJU (JP)
OZAWA YOICHI (JP)
OHMURA TETSUYA (JP)
KURAZUMI JUNKO (JP)
OZAWA YOICHI (JP)
OHMURA TETSUYA (JP)
KURAZUMI JUNKO (JP)
Application Number:
PCT/JP2004/008804
Publication Date:
January 06, 2005
Filing Date:
June 23, 2004
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
SUZUKI EIJU (JP)
OZAWA YOICHI (JP)
OHMURA TETSUYA (JP)
KURAZUMI JUNKO (JP)
SUZUKI EIJU (JP)
OZAWA YOICHI (JP)
OHMURA TETSUYA (JP)
KURAZUMI JUNKO (JP)
International Classes:
B60C1/00; C08F4/54; C08F4/611; C08F36/06; (IPC1-7): C08F36/06; C08F4/54; C08L9/00; B60C1/00
Domestic Patent References:
WO2000052062A1 | 2000-09-08 | |||
WO2002038635A1 | 2002-05-16 | |||
WO2003095503A1 | 2003-11-20 | |||
WO2003097708A1 | 2003-11-27 |
Foreign References:
JP2002187908A | 2002-07-05 | |||
JP2001048940A | 2001-02-20 | |||
JP2002256012A | 2002-09-11 | |||
JPH07188316A | 1995-07-25 | |||
JPS5566903A | 1980-05-20 | |||
JPH07165811A | 1995-06-27 | |||
JP2000034320A | 2000-02-02 | |||
JPH0559103B2 | 1993-08-30 | |||
US4429089A | 1984-01-31 | |||
EP0846707A1 | 1998-06-10 | |||
US6046266A | 2000-04-04 | |||
US6451934B1 | 2002-09-17 | |||
JP2001048940A | 2001-02-20 |
Other References:
AIDA, HOU, NISHIURA, DOI, KURAKADO, HORIUCHI, WAKATSUKI, MACROMOL. RAPID COMMUN., vol. 24, 2003, pages 179 - 184
See also references of EP 1637548A4
See also references of EP 1637548A4
Attorney, Agent or Firm:
Sugimura, Kosaku (2-4 Kasumigaseki 3-chom, Chiyoda-ku Tokyo, JP)
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