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Patent Searching and Data


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%.

Inventors:
OKABE YASUYOSHI (JP)
SHIBANO YUKI (JP)
SAKAGUCHI TOSHIYUKI (JP)
Application Number:
PCT/JP2014/073297
Publication Date:
March 26, 2015
Filing Date:
September 04, 2014
Export Citation:
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Assignee:
UBE INDUSTRIES (JP)
International Classes:
C08L9/00; C08F4/6592; C08F36/00; C08L25/04; C08L51/04
Domestic Patent References:
WO2011102518A12011-08-25
Foreign References:
JP2008274304A2008-11-13
JP2004250671A2004-09-09
JP2004250691A2004-09-09
JP2004315562A2004-11-11
JP2007063308A2007-03-15
JP2004250679A2004-09-09
JPH10152535A1998-06-09
JPH0570628A1993-03-23
JPS62179548A1987-08-06
JPH10139835A1998-05-26
JPH10273574A1998-10-13
JPH09291108A1997-11-11
JPH09324009A1997-12-16
JPH09302035A1997-11-25
JP3982203B22007-09-26
Other References:
See also references of EP 2993207A4
Attorney, Agent or Firm:
AKATSUKA MASAKI (JP)
Masaki Akatsuka (JP)
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