Title:
RUBBER COMPOSITION FOR TIRE
Document Type and Number:
WIPO Patent Application WO/2019/043930
Kind Code:
A1
Abstract:
The present invention provides a rubber composition for a tire having improved abrasion resistance and low loss property while maintaining processability.
The rubber composition for a tire according to the present invention comprises (i) polybutadiene rubber, (ii) other rubber, and (iii) a rubber reinforcing material, the polybutadiene rubber including: a polybutadiene (A) satisfying the conditions in which the ratio (Tcp/ML) of the 5 wt% of a toluene solution viscosity to the Mooney viscosity is 2.5 or more, and the weight average molecular weight is 60.0x104 or more; and a polybutadiene (B) satisfying the conditions in which the ratio (Tcp/ML) of the 5 wt% of a toluene solution viscosity to the Mooney viscosity is 3.5 or less and the weight average molecular weight is 56.0x104 or less, wherein the polybutadiene (A)/the polybutadiene (B) is 10/90- 80/20.
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Inventors:
KANOU YUUTO (JP)
AMBE MITSUHARU (JP)
OKABE YASUYOSHI (JP)
KANBAYASHI KOU (JP)
YAMAGAKI MASASHI (JP)
MATSUMOTO NORIHIRO (JP)
ANDO KANTA (JP)
AMBE MITSUHARU (JP)
OKABE YASUYOSHI (JP)
KANBAYASHI KOU (JP)
YAMAGAKI MASASHI (JP)
MATSUMOTO NORIHIRO (JP)
ANDO KANTA (JP)
Application Number:
PCT/JP2017/031680
Publication Date:
March 07, 2019
Filing Date:
September 01, 2017
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
SUMITOMO RUBBER IND (JP)
SUMITOMO RUBBER IND (JP)
International Classes:
C08L9/00; B60C1/00; C08K3/00; C08L7/00; C08L9/06
Domestic Patent References:
| WO2006067961A1 | 2006-06-29 | |||
| WO2015041059A1 | 2015-03-26 |
Foreign References:
| JP2006241265A | 2006-09-14 | |||
| JP2017128711A | 2017-07-27 | |||
| JP2002053624A | 2002-02-19 |
Attorney, Agent or Firm:
AKATSUKA Masaki (JP)
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