Title:
RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2019/221182
Kind Code:
A1
Abstract:
Provided are: a rubber composition for a tire tread which, when incorporated in a tire, provides excellent rolling performance and wear resistance and high elongation at break; and a pneumatic tire using the rubber composition for a tire tread. This rubber composition for a tire tread contains: a conjugated diene rubber containing 10% by mass or more of a specific conjugated diene rubber produced by a conjugated diene rubber production method including a specific step and 15% by mass or more of natural rubber; silica; and a silane coupling agent. The silica content is 30 parts by mass or more relative to 100 parts by mass of the conjugated diene rubber. The silane coupling agent content is 3 to 30% by mass relative to the silica content.
Inventors:
SATO MASAKI (JP)
KAZARIYA AYAKI (JP)
SAWA HIDEAKI (JP)
ASHIURA MAKOTO (JP)
KAZARIYA AYAKI (JP)
SAWA HIDEAKI (JP)
ASHIURA MAKOTO (JP)
Application Number:
PCT/JP2019/019339
Publication Date:
November 21, 2019
Filing Date:
May 15, 2019
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08L15/00; B60C1/00; C08C19/42; C08F236/04; C08F297/02; C08K3/36; C08K5/5415; C08L7/00; C08F2/14
Domestic Patent References:
| WO2016208739A1 | 2016-12-29 | |||
| WO2018092716A1 | 2018-05-24 |
Foreign References:
| JP2017082235A | 2017-05-18 | |||
| JP2017082236A | 2017-05-18 | |||
| JP2017133026A | 2017-08-03 | |||
| JP2017110230A | 2017-06-22 | |||
| JP2016047887A | 2016-04-07 |
Other References:
See also references of EP 3795626A4
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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