Title:
RUBBER COMPOSITION AND TIRE
Document Type and Number:
WIPO Patent Application WO/2017/126633
Kind Code:
A1
Abstract:
Provided as a rubber composition with which it is possible to improve both the on-ice performance and the wear resistance of a tire is a rubber composition characterized in that: the storage elastic modulus (E') at -20°C is at least 5 MPa but at most 10 MPa; the storage elastic modulus (E') at -20°C and the loss tangent (tanδ) at -20°C satisfy the relationship of formula (1): 0.02×(E'-20°C)+0.25≤(tanδ-20°C)≤0.65 [in the formula, (E'-20°C) is the storage elastic modulus (MPa) at -20°C, and (tanδ-20°C) is the loss tangent at -20°C]; the rubber composition contains silica, a resin, and at least one type of diene polymer; and the mass ratio (silica content/resin content) of the silica content (parts by mass) and the resin content (parts by mass) is 1.00-4.00.
Inventors:
NUKAGA HIDEYUKI (JP)
Application Number:
PCT/JP2017/001814
Publication Date:
July 27, 2017
Filing Date:
January 19, 2017
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L9/00; B60C1/00; C08K3/04; C08K3/36; C08L7/00; C08L15/00
Foreign References:
| JP2005105060A | 2005-04-21 | |||
| JP2015078272A | 2015-04-23 | |||
| JPH07133376A | 1995-05-23 | |||
| JP2004066894A | 2004-03-04 | |||
| JP2001279028A | 2001-10-10 | |||
| JPH11189616A | 1999-07-13 | |||
| JP2001158836A | 2001-06-12 | |||
| JP2004238619A | 2004-08-26 |
Other References:
See also references of EP 3406664A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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