Title:
Rubber composition for tires and pneumatic tires
Document Type and Number:
Japanese Patent JP6331267
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rubber composition for a tire excellent inn on-snow performance, dry performance, wet performance and low rolling resistance when being made into a tire.SOLUTION: Provided is a rubber composition for a tire comprising: diene rubber (A), low molecular weight butadiene rubber (B) and silica (C), and the diene rubber (A) includes conjugated diene rubber (A1) and high molecular weight butadiene ruber (A2), the conjugated diene rubber (A1) includes a specified structure (a) of 5 mass% or more, the content of the conjugated diene rubber (A1) is 50 to 90 mass% to the content of the diene rubber, the contents of the high molecular weight butadiene rubber (A2), the low molecular weight butadiene rubber (B) and the silica (C) are 10 to 40 mass%, 5 to 30 pts.mass and 80 to 150 pts.mass, respectively, to the content of the diene rubber (A), and its glass transition temperature is -60 to -47°C.
Inventors:
Masaki Sato
Makoto Ashiura
Makoto Ashiura
Application Number:
JP2013113900A
Publication Date:
May 30, 2018
Filing Date:
May 30, 2013
Export Citation:
Assignee:
THE YOKOHAMA RUBBER CO.,LTD.
International Classes:
C08L53/02; B60C1/00; C08K3/36; C08L7/00; C08L9/00; C08L65/00
Domestic Patent References:
| JP2004231905A | ||||
| JP2013082773A | ||||
| JP2013082794A | ||||
| JP2011122057A | ||||
| JP2010270207A | ||||
| JP2006063209A | ||||
| JP2012036268A |
Foreign References:
| WO2003102053A1 | ||||
| WO2013051679A1 | ||||
| WO2011105362A1 |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi