Title:
タイヤ用ゴム組成物および空気入りタイヤ
Document Type and Number:
Japanese Patent JP6627466
Kind Code:
B2
Abstract:
An object of the present invention is to provide a rubber composition for tire which can improve initial grip performance and stable grip performance during running at a high level while maintaining sufficient abrasion resistance, and a pneumatic tire having a tread composed of this rubber composition for tire. The rubber composition for tire comprises 70 to 200 parts by mass of a filler and 60 to 250 parts by mass of a softener compounding 15 to 60 parts by mass of a predetermined tackifying resin with a softening point of not less than 110°C based on 100 parts by mass of a diene rubber component comprising not less than 20% by mass of a styrene-butadiene copolymer rubber a having a glass transition temperature of -35 to 15°C, a styrene content of 35 to 48% by mass and a vinyl unit quantity in the butadiene component of 35 to 55%.
Inventors:
Nakajima Guo Aoi
Application Number:
JP2015237754A
Publication Date:
January 08, 2020
Filing Date:
December 04, 2015
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
C08L9/06; B60C1/00; C08K3/04; C08L25/08; C08L45/00
Domestic Patent References:
| JP2014189698A | ||||
| JP2011001435A | ||||
| JP2015165000A | ||||
| JP2005154696A |
Foreign References:
| WO2013132631A1 |
Attorney, Agent or Firm:
Asahina Patent Office