Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2017/056767
Kind Code:
A1
Abstract:
This pneumatic tire excels in workability and tire characteristics and includes a tire member manufactured using a rubber composition which contains a polybutadiene (a), another rubber (b), and a rubber reinforcing material (c). The polybutadiene satisfies the following conditions: (A) Mooney viscosity (ML1+4, 100ºC) is 43-70; (B) the proportion (Tcp/ML1+4, 100ºC) of 5 mass% toluene solution viscosity (Tcp) and Mooney viscosity (ML1+4, 100ºC) is 0.9-1.7; (C) when torque at the time of ML1+4, 100ºC measurement completion is 100%, a stress relief time (T80) until the torque value decreases by 80% is 10.0-40.0 seconds; (D) a molecular weight distribution (Mw/Mn) is 2.50-4.00; and (F) the percentage of a cis structure in microstructural analysis is no more than 98 mol%.
Inventors:
OSHIMO MASAKI (JP)
HABA TOSHIFUMI (JP)
MABUCHI TAKAHIRO (JP)
HABA TOSHIFUMI (JP)
MABUCHI TAKAHIRO (JP)
Application Number:
PCT/JP2016/074005
Publication Date:
April 06, 2017
Filing Date:
August 17, 2016
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
C08L9/00; B60C1/00; C08F4/70; C08F36/06; C08K3/36; C08L7/00; C08L9/06; C08L21/00
Domestic Patent References:
| WO2015151626A1 | 2015-10-08 |
Foreign References:
| JP2005298612A | 2005-10-27 | |||
| JP2002338742A | 2002-11-27 | |||
| JPH05194658A | 1993-08-03 | |||
| JP2005008817A | 2005-01-13 | |||
| JP2005154754A | 2005-06-16 | |||
| JP2006241265A | 2006-09-14 | |||
| JP2010163590A | 2010-07-29 | |||
| JP2011079954A | 2011-04-21 | |||
| JPH08277346A | 1996-10-22 | |||
| JP2003500280A | 2003-01-07 | |||
| JP2010514897A | 2010-05-06 | |||
| JP2014185340A | 2014-10-02 |
Other References:
See also references of EP 3336139A4
Attorney, Agent or Firm:
ASAHINA & CO. (JP)
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