Title:
CONJUGATED DIENE POLYMER MANUFACTURING METHOD, POLYBUTADIENE, AND RUBBER COMPOSITION UTILIZING THE SAME
Document Type and Number:
WIPO Patent Application WO/2010/071037
Kind Code:
A1
Abstract:
Provided is a conjugated diene polymer with a very low solution viscosity, improved workability, a high degree of branching, and a high cis-1,4 structure content, which utilizes a catalyst containing an yttrium compound. Also provided is a rubber composition with excellent stiffener dispersibility which utilizes said polymer. The conjugated diene polymer manufacturing method is characterized in that a conjugated diene is polymerized at 50-120°C in the presence of a catalyst made of (A) an yttrium compound, (B) an ionic compound comprising a non-coordinating anion and a cation, and (C) an organic aluminum compound. (1) The ratio (Tcp/ML1+4) between 5 wt% toluene solution viscosity (Tcp) measured at 25°C and Mooney viscosity (ML1+4) at 100°C is 0.1-1.2. (2) The cis-1,4 structure content is 80% or greater, and the 1,2 structure content is less than 5%.
Inventors:
MURAKAMI MASATO (JP)
SHIBA KOJI (JP)
SHODA TAKESHI (JP)
ANBE MITSUHARU (JP)
SHIBA KOJI (JP)
SHODA TAKESHI (JP)
ANBE MITSUHARU (JP)
Application Number:
PCT/JP2009/070406
Publication Date:
June 24, 2010
Filing Date:
December 04, 2009
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
MURAKAMI MASATO (JP)
SHIBA KOJI (JP)
SHODA TAKESHI (JP)
ANBE MITSUHARU (JP)
MURAKAMI MASATO (JP)
SHIBA KOJI (JP)
SHODA TAKESHI (JP)
ANBE MITSUHARU (JP)
International Classes:
C08F4/54; C08F36/04; C08K3/36; C08L9/00
Domestic Patent References:
| WO2006049016A1 | 2006-05-11 |
Foreign References:
| JP2007161921A | 2007-06-28 | |||
| JP2007161922A | 2007-06-28 | |||
| JP2007161799A | 2007-06-28 | |||
| JP2007161919A | 2007-06-28 | |||
| JPH072959A | 1995-01-06 | |||
| JPH0245508A | 1990-02-15 | |||
| JP2004204229A | 2004-07-22 | |||
| JPH0649016A | 1994-02-22 | |||
| JP2001139603A | 2001-05-22 |
Other References:
STEFAN ARNDT ET AL.: "Cationic yttrium methyl complexes as functional models for polymerization catalysts of 1, 3-dienes", ANGEWANDTE CHEMIE, INTERNATIONAL EDITION, vol. 44, no. 45, 2005, pages 7473 - 7477, XP008148716
Attorney, Agent or Firm:
ITAMI, Masaru et al. (JP)
Itami 勝 (JP)
Itami 勝 (JP)
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