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Patent Searching and Data


Title:
TIRE TREAD RUBBER COMPOSITION AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2018/135530
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a tire tread rubber composition having exceptional processability and offering exceptional wet grip performance, rolling characteristics, and wear resistance performance in tires produced therefrom; and a pneumatic tire in which said tire tread rubber composition is used. This tire tread rubber composition comprises a diene rubber, silica, a silane coupling agent, and an aromatic modified terpene resin having a softening point of 60 to 150°C. The tire tread rubber composition has a silica content of 50 to 150 parts by mass relative to 100 parts by mass of the diene rubber, and a silane coupling agent content of 2 to 20 mass% relative to the silica content. The diene rubber includes a specific modified conjugated diene polymer and a specific conjugated diene rubber, the specific modified conjugated diene polymer content of the diene rubber being 10 to 50 mass%, and the specific conjugated diene rubber polymer content of the diene rubber being 50 to 90 mass%.

Inventors:
IIZUKA Yusuke (C/O The Yokohama Rubber Co, LTD. Hiratsuka Factory 2-1, Oiwake, Hiratsuka Cit, Kanagawa 01, 〒2548601, JP)
Application Number:
JP2018/001213
Publication Date:
July 26, 2018
Filing Date:
January 17, 2018
Export Citation:
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Assignee:
THE YOKOHAMA RUBBER CO., LTD. (36-11, Shimbashi 5-chome Minato-k, Tokyo 85, 〒1058685, JP)
International Classes:
C08L15/00; B60C1/00; C08K3/36; C08K5/54
Foreign References:
JP2017088864A2017-05-25
JP2013237724A2013-11-28
JP2013159745A2013-08-19
JP2016089118A2016-05-23
JP2016047888A2016-04-07
JP2016047886A2016-04-07
JP2016047889A2016-04-07
JP2016047887A2016-04-07
JP2016047887A2016-04-07
JP5965657B22016-08-10
JP2016047883A2016-04-07
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (Yusen Iwamoto-cho Bldg. 6F, 3-3 Iwamoto-cho 2-chome, Chiyoda-k, Tokyo 32, 〒1010032, JP)
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