Title:
POLYBUTADIENE
Document Type and Number:
WIPO Patent Application WO/2015/151625
Kind Code:
A1
Abstract:
Provided is a polybutadiene that has improved processability and improved wear resistance. The polybutadiene satisfies the following requirements: (A) having a Mooney viscosity (ML1+4, 100°C) of 43 or greater; (B) showing a ratio (Tcp/ML1+4, 100°C) of 5 wt% toluene solution viscosity (Tcp) to Mooney viscosity (ML1+4, 100°C) of 0.9-2.3; (C) having a stress relaxation time (T80) of 10.0-40.0 seconds, said T80 being defined as, by referring the torque at the termination of the (ML1+4, 100°C) measurement to 100%, the time required for the torque to decrease to 80%; and (D) showing a molecular weight distribution (Mw/Mn) of 2.50-4.00.
Inventors:
AMBE MITSUHARU (JP)
KANOU YUUTO (JP)
SHODA TAKESHI (JP)
KANOU YUUTO (JP)
SHODA TAKESHI (JP)
Application Number:
PCT/JP2015/054521
Publication Date:
October 08, 2015
Filing Date:
February 19, 2015
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
International Classes:
C08F36/06; C08F4/70
Foreign References:
| JPH10298229A | 1998-11-10 | |||
| JP2004263094A | 2004-09-24 | |||
| JP2005154754A | 2005-06-16 | |||
| JP2011079954A | 2011-04-21 | |||
| JPH05194658A | 1993-08-03 | |||
| JP2010163590A | 2010-07-29 | |||
| JP2012097271A | 2012-05-24 | |||
| JP2013227524A | 2013-11-07 |
Other References:
See also references of EP 3106479A4
Attorney, Agent or Firm:
AKATSUKA MASAKI (JP)
Masaki Akatsuka (JP)
Masaki Akatsuka (JP)
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