Title:
POLYBUTADIENE RUBBER
Document Type and Number:
WIPO Patent Application WO/2019/043929
Kind Code:
A1
Abstract:
The present invention provides a polybutadiene rubber that is improved in terms of abrasion resistance and low loss property while maintaining processability. The polybutadiene rubber according to the present invention comprises: a polybutadiene (A) satisfying the conditions in which the ratio (Tcp/ML) of the 5 wt% toluene solution viscosity to the Mooney viscosity is 2.5 or more, and the weight average molecular weight is 60.0×104 or more; and a polybutadiene (B) satisfying the conditions in which the ratio (Tcp/ML) of the 5 wt% 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)
AMBE MITSUHARU (JP)
OKABE YASUYOSHI (JP)
KANBAYASHI KOU (JP)
YAMAGAKI MASASHI (JP)
Application Number:
PCT/JP2017/031679
Publication Date:
March 07, 2019
Filing Date:
September 01, 2017
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
International Classes:
C08L9/00; B60C1/00
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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