Title:
RUBBER COMPOSITION AND TIRE
Document Type and Number:
WIPO Patent Application WO/2019/012946
Kind Code:
A1
Abstract:
The present invention provides a rubber composition with which it is possible to produce a vulcanized rubber having excellent wear resistance without compromising cracking resistance and a low heat generation property. This rubber composition comprises: a rubber component (A); carbon black (B) which has a CTAB specific surface area of 110-160 m2/g, a half-value width ΔD50 of at most 60 nm for the peak including a Stokes equivalent diameter Dst as determined by a centrifugal sedimentation method, and a ΔD50/Dst ratio of at most 0.95; and silica (C) having a CTAB specific surface area of at least 200 m2/g, wherein the sum total of the contained amount (b) of the carbon black (B) and the contained amount (c) of the silica (C) is 30-80 parts by mass with respect to 100 parts by mass of the rubber component (A), and (b):(c) equals 60 to 85 : 40 to 15.
Inventors:
HAMATANI SATOSHI (JP)
AKAHANE HIDENOBU (JP)
AKAHANE HIDENOBU (JP)
Application Number:
PCT/JP2018/023675
Publication Date:
January 17, 2019
Filing Date:
June 21, 2018
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L21/00; B60C1/00; C08K3/04; C08K3/36; C08L7/00
Domestic Patent References:
| WO2012147976A1 | 2012-11-01 |
Foreign References:
| JP2016074810A | 2016-05-12 | |||
| JPH0959433A | 1997-03-04 | |||
| JP2014185340A | 2014-10-02 | |||
| JP2011174048A | 2011-09-08 | |||
| JP2011140547A | 2011-07-21 | |||
| JP2011153293A | 2011-08-11 | |||
| JP2011074332A | 2011-04-14 | |||
| JP2006104455A | 2006-04-20 | |||
| JP5659594B2 | 2015-01-28 |
Other References:
See also references of EP 3653665A4
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
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