Title:
ゴム組成物、タイヤトレッドおよび空気入りタイヤ
Document Type and Number:
Japanese Patent JP6794869
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rubber composition with low-temperature embrittlement resistance and grip performance improved in a balanced manner, a tire tread prepared with the rubber composition, and a pneumatic tire having the tire tread.SOLUTION: A rubber composition contains a rubber component, at least 90 mass% of which is composed of styrene-butadiene rubber and butadiene rubber, and also contains, based on the rubber component 100 pts.mass, liquid styrene-butadiene rubber of at least 5 pts.mass, and coumarone indene resin with a softening point of 110°C-130°C. The content of butadiene rubber is 2.0-6.0 pts.mass relative to the liquid styrene-butadiene rubber 1 pts.mass, and the content of coumarone indene resin with a softening point of 110°C-130°C is also 2.0-6.0 pts.mass relative to the liquid styrene-butadiene rubber 1 pts.mass.SELECTED DRAWING: None
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Inventors:
Noboru Okabe
Application Number:
JP2017028983A
Publication Date:
December 02, 2020
Filing Date:
February 20, 2017
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
C08L9/00; B60C1/00; C08K3/04; C08K3/36; C08L9/06; C08L45/02
Domestic Patent References:
| JP2016037532A | ||||
| JP2013071938A | ||||
| JP2014205804A |
Foreign References:
| WO2016104144A1 | ||||
| WO2016104142A1 |
Attorney, Agent or Firm:
Asahina Patent Office