Title:
TIRE TREAD RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2017/164329
Kind Code:
A1
Abstract:
Provided is a tire tread rubber composition in which snow performance and chipping resistance are enhanced so as to be equal to or greater than conventional levels. The rubber composition is characterized in that an oil, a sulfur (S), a vulcanization accelerator (A), and 50-100 parts by mass of a filler containing 20 % by mass or more of carbon black are mixed with 100 parts by mass of a diene-based rubber containing a natural rubber and 10-30 % by mass of a butadiene rubber, wherein the mass ratio (NR/BR) of the natural rubber and the butadiene rubber is 0.3 or greater, the mixing ratio (S/A) of the sulfur and the vulcanization accelerator is 0.8 or less, and total amount of oil components in the rubber composition including the oil is 15-25 parts by mass.
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Inventors:
MURASE KEISUKE (JP)
Application Number:
PCT/JP2017/011804
Publication Date:
September 28, 2017
Filing Date:
March 23, 2017
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08L7/00; B60C1/00; C08K3/04; C08K3/06; C08K5/00; C08L9/00
Domestic Patent References:
| WO2016002506A1 | 2016-01-07 |
Foreign References:
| JP2015000971A | 2015-01-05 | |||
| JP2015196825A | 2015-11-09 | |||
| JP2015101636A | 2015-06-04 | |||
| JP2009001176A | 2009-01-08 | |||
| JP2015124370A | 2015-07-06 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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