| US 7,569,632 B2 | ||
| Rubber composition and process for preparing the same | ||
| Yasuhisa Minagawa, Kobe (Japan); Noriko Yagi, Kobe (Japan); and Noboru Wakabayashi, Kobe (Japan) | ||
| Assigned to Sumitomo Rubber Industries, Ltd., Kobe-Shi (Japan) | ||
| Filed on Jun. 21, 2006, as Appl. No. 11/471,531. | ||
| Claims priority of application No. 2005-207087 (JP), filed on Jul. 15, 2005; and application No. 2005-351853 (JP), filed on Dec. 06, 2005. | ||
| Prior Publication US 2007/0015861 A1, Jan. 18, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. B60C 1/00 (2006.01); C08K 3/38 (2006.01) | ||
| U.S. Cl. 524—405 [524/404; 524/492; 524/571] | 7 Claims |
| 6. A vehicle tire which exhibits an improvement in abrasion resistance, a lowering of rolling resistance and a reduced amount
of unreacted silane coupling agent which comprises:
a rubber component,
at least 10 parts by weight of silica based on 100 parts by weight of the rubber component,
3 to 15 parts by weight of bis(3-triethyoxysilypropyl) disulfide as a silane coupling agent based on 100 parts by weight of
silica and
0.3 to 1 parts by weight of potassium tetraborate tetrahydrate based on 100 parts by weight of silica.
|