Title:
The rubber composition for tire treads, and a pneumatic tire
Document Type and Number:
Japanese Patent JP6024781
Kind Code:
B2
Abstract:
A rubber composition for tire treads contains an inorganic filler containing silica and a diene rubber containing a carboxy-modified polymer. The content of the inorganic filler is from 70 to 170 parts by mass per 100 parts by mass of the diene rubber. The content of the silica is from 70 to 160 parts by mass per 100 parts by mass of the diene rubber. The carboxy-modified polymer is obtained by modifying a styrene-butadiene rubber (A) with a nitrone compound (B) having a carboxy group, and the content of the carboxy-modified polymer in the diene rubber is from 10 to 100 mass %. The content of styrene units in the styrene-butadiene rubber (A) is not less than 36 mass %. The degree of modification of the carboxy-modified polymer is from 0.02 to 4.0 mol %.
Inventors:
Gaku Kato
Ryota Takahashi
Takahiro Okamatsu
Kirino Yoshiaki
Ryota Takahashi
Takahiro Okamatsu
Kirino Yoshiaki
Application Number:
JP2015056621A
Publication Date:
November 16, 2016
Filing Date:
March 19, 2015
Export Citation:
Assignee:
THE YOKOHAMA RUBBER CO.,LTD.
International Classes:
C08L13/00; B60C1/00; C08C19/22; C08K3/36; C08K5/378; C08L15/00
Domestic Patent References:
| JP2015098591A | ||||
| JP2014101400A | ||||
| JP5578249B2 | ||||
| JP2014189698A |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi