Title:
RUBBER COMPOSITION AND STYRENE-BASED RESIN COMPOSITION USING SAME
Document Type and Number:
WIPO Patent Application WO/2015/041059
Kind Code:
A1
Abstract:
The present invention provides a rubber composition that is improved in solution viscosity and cold flow. This rubber composition comprises: 20 to 90 wt% of a polybutadiene (A) that is produced by a metallocene catalyst and that satisfies the conditions that the microstructure includes 65 to 95 mol% of a cis-1,4-structure and 4 to 30 mol% of a vinyl-1,2-structure, and the weight-average molecular weight is from 2×105 to 1×106; and 10 to 80 wt% of a polybutadiene (B) that satisfies the conditions that the Mooney viscosity (ML1+4, 100°C) is 60 or less, the 5 wt% styrene solution viscosity (St-cp) is from 20 to 110, and St-cp/ML1+4 is from 1.0 to 2.5. The sum of the polybutadiene (A) and the polybutadiene (B) is from 60 to 100 wt%.
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Inventors:
OKABE YASUYOSHI (JP)
SHIBANO YUKI (JP)
SAKAGUCHI TOSHIYUKI (JP)
SHIBANO YUKI (JP)
SAKAGUCHI TOSHIYUKI (JP)
Application Number:
PCT/JP2014/073297
Publication Date:
March 26, 2015
Filing Date:
September 04, 2014
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
International Classes:
C08L9/00; C08F4/6592; C08F36/00; C08L25/04; C08L51/04
Domestic Patent References:
WO2011102518A1 | 2011-08-25 |
Foreign References:
JP2008274304A | 2008-11-13 | |||
JP2004250671A | 2004-09-09 | |||
JP2004250691A | 2004-09-09 | |||
JP2004315562A | 2004-11-11 | |||
JP2007063308A | 2007-03-15 | |||
JP2004250679A | 2004-09-09 | |||
JPH10152535A | 1998-06-09 | |||
JPH0570628A | 1993-03-23 | |||
JPS62179548A | 1987-08-06 | |||
JPH10139835A | 1998-05-26 | |||
JPH10273574A | 1998-10-13 | |||
JPH09291108A | 1997-11-11 | |||
JPH09324009A | 1997-12-16 | |||
JPH09302035A | 1997-11-25 | |||
JP3982203B2 | 2007-09-26 |
Other References:
See also references of EP 2993207A4
Attorney, Agent or Firm:
AKATSUKA MASAKI (JP)
Masaki Akatsuka (JP)
Masaki Akatsuka (JP)
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