To provide a rubber composition for tires, which is capable of further improving low rolling resistance and wet performance in comparison to the conventional levels.
The rubber composition for tires is characterized by being obtained by blending 2-50 pts.wt of an aromatic modified terpene resin having a softening point of 100°C or more and 60-130 pts.wt in total of two kinds of silica, namely silica-X and silica-Y based on 100 pts.wt of a diene rubber that contains 5-50 wt.% of a modified S-SBR having a vinyl unit content of 60 wt.% or more. The rubber composition for tires is also characterized in that: a functional group of the modified S-SBR is reactive with a silanol group; the ratio of silica to the total amount of reinforcing fillers including silica and carbon black is 85 wt.% or more; the silica-X has a nitrogen adsorption specific surface area of 140 m2/g or more; the silica-Y has a nitrogen adsorption specific surface area of 100 m2/g or more but less than 140 m2/g; and the relation of x/7 < y ≤ x is satisfied when the blending amounts of the silica-X and the silica-Y based on 100 pts.wt of the diene rubber are respectively represented by x (pts.wt) and y (pts.wt).
| JP2009263587A | 2009-11-12 | |||
| JP2010215831A | 2010-09-30 | |||
| JP2011162625A | 2011-08-25 | |||
| JP2008101127A | 2008-05-01 | |||
| JP2009138157A | 2009-06-25 | |||
| JP2011132307A | 2011-07-07 | |||
| JP2011094012A | 2011-05-12 | |||
| JP2008274120A | 2008-11-13 | |||
| JP2011001435A | 2011-01-06 | |||
| JP2009263587A | 2009-11-12 | |||
| JP2010215831A | 2010-09-30 | |||
| JP2011162625A | 2011-08-25 | |||
| JP2008101127A | 2008-05-01 |
| WO2010140704A1 | 2010-12-09 | |||
| WO2010140704A1 | 2010-12-09 |
Takayoshi in the daytime
Shinichi Ogawa
Takashi Noguchi
Kenji Sato
Isao Hirai
Masao Sakaizawa
Kazuhiko Saishita