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Patent Searching and Data


Title:
RUBBER COMPOSITION AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2013/002235
Kind Code:
A1
Abstract:
Provided are a rubber composition that can improve fuel efficiency and wet grip performance in a well-balanced manner, and a pneumatic tire using the rubber composition in various members (particularly the tread) of the tire. This rubber composition contains: a rubber component containing a copolymer that is obtained by copolymerizing 1,3-butadiene, styrene, and a compound represented by formula (I), the copolymer having an amino group at one end and having, at the other end, a functional group containing at least one type of atom selected from the group consisting of nitrogen, oxygen, and silicon, the copolymer having a weight-average molecular weight of 1.0×105 to 2.5×106; silica; and a liquid resin having a softening point in the range of -20 to 20°C. (In the formula, R1 represents a hydrocarbon group having a carbon number of 1 to 10.)

Inventors:
KAWACHI Takahiro (6-9, Wakinohama-cho 3-chome, Chuo-ku, Kobe-sh, Hyogo 72, 〒6510072, JP)
河地 貴浩 (〒72 兵庫県神戸市中央区脇浜町3丁目6番9号 住友ゴム工業株式会社内 Hyogo, 〒6510072, JP)
Application Number:
JP2012/066324
Publication Date:
January 03, 2013
Filing Date:
June 27, 2012
Export Citation:
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Assignee:
SUMITOMO RUBBER INDUSTRIES, LTD. (6-9 Wakinohama-cho 3-chome, Chuo-ku Kobe-sh, Hyogo 72, 〒6510072, JP)
住友ゴム工業株式会社 (〒72 兵庫県神戸市中央区脇浜町3丁目6番9号 Hyogo, 〒6510072, JP)
KAWACHI Takahiro (6-9, Wakinohama-cho 3-chome, Chuo-ku, Kobe-sh, Hyogo 72, 〒6510072, JP)
International Classes:
C08L21/00; B60C1/00; C08F8/00; C08F212/08; C08F212/14; C08F236/10; C08K3/36; C08L9/06; C08L25/16; C08L45/00
Foreign References:
JP2011084650A
JP2011063714A
JP2011079913A
JP2011089086A
JP2011144323A
JP2011144262A
JP2011132298A
JP2012153764A
Attorney, Agent or Firm:
YASUTOMI & Associates (5-36, Miyahara 3-chome Yodogawa-ku, Osaka-sh, Osaka 03, 〒5320003, JP)
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Claims: