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Patent Searching and Data


Title:
RUBBER COMPOSITION AND TIRE
Document Type and Number:
WIPO Patent Application WO/2018/186367
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a rubber composition that achieves, at a high degree, tire wet-performance, low-rolling resistance, and steering stability on dry road surfaces. Provided, as the means for solving this problem, is a rubber composition characterized by comprising a rubber constituent (A) including a natural rubber (A1) and a modified conjugated dyne-based copolymer (A2), and a thermoplastic resin (B), wherein: the natural rubber (A1) content ratio in the rubber constituent (A) is at least 30% by mass; and the modified conjugated dyne-based copolymer (A2) has a weight-average molecular weight of 20 × 104 to 300 × 104, includes a modified conjugated dyne-based copolymer with a molecular weight of 200 × 104 to 500 × 104 at 0.25–30% by mass with respect to the total mass of the modified conjugated dyne-based copolymer (A2), and has a contraction factor (g') of less than 0.64.

Inventors:
TAKANO Kosuke (1-1 Kyobashi 3-chom, Chuo-ku Tokyo 40, 〒1048340, JP)
OGASAWARA Takuya (1-1 Kyobashi 3-chom, Chuo-ku Tokyo 40, 〒1048340, JP)
TSUJI Takanori (1-1 Kyobashi 3-chom, Chuo-ku Tokyo 40, 〒1048340, JP)
Application Number:
JP2018/014164
Publication Date:
October 11, 2018
Filing Date:
April 02, 2018
Export Citation:
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Assignee:
BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome Chuo-ku Tokyo, 40, 40, 〒1048340, JP)
International Classes:
C08L7/00; B60C1/00; C08C19/25; C08L15/00; C08L101/00
Domestic Patent References:
WO2016133154A12016-08-25
WO2016199779A12016-12-15
WO2018034217A12018-02-22
WO2018034194A12018-02-22
WO2018034195A12018-02-22
WO2015079703A12015-06-04
Foreign References:
JP2014205842A2014-10-30
JP2009263587A2009-11-12
JP2013159745A2013-08-19
JP2018028018A2018-02-22
JP2018002986A2018-01-11
JP2018028047A2018-02-22
JP2015113437A2015-06-22
JP2010275489A2010-12-09
JP2009287018A2009-12-10
JPH05269884A1993-10-19
JP2009256540A2009-11-05
Other References:
R. R. HAMPTON, ANALYTICAL CHEMISTRY, vol. 21, 1949, pages 923
KAUTSCHUK GUMMI KUNSTSTOFFE, vol. 52, no. 12, 1999, pages 799
Attorney, Agent or Firm:
SUGIMURA Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigasek, Chiyoda-ku Tokyo 13, 〒1000013, JP)
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