| US 7,585,913 B2 | ||
| Rubber composition and tire using the same | ||
| Atsushi Nakayama, Kodaira (Japan); and Hiroshi Yamada, Kodaira (Japan) | ||
| Assigned to Bridgestone Corporation, Tokyo (Japan) | ||
| Appl. No. 10/554,110 PCT Filed Apr. 19, 2004, PCT No. PCT/JP2004/005563 § 371(c)(1), (2), (4) Date Oct. 21, 2005, PCT Pub. No. WO2004/094525, PCT Pub. Date Nov. 04, 2004. |
||
| Claims priority of application No. 2003-117078 (JP), filed on Apr. 22, 2003. | ||
| Prior Publication US 2006/0199894 A1, Sep. 07, 2006 | ||
| Int. Cl. C08K 3/04 (2006.01) | ||
| U.S. Cl. 524—495 [524/496] | 12 Claims |
| 1. A rubber composition comprising 100 parts by mass of a diene polymer and 20-250 parts by mass of a carbon black as a filler,
characterized in that the carbon black has a dibutylphthalate (DBP) absorption number of 40-180 cm3/100 g, a nitrogen adsorption specific surface area (N2SA) of 40-300 m2/g, a tint strength (TINT) of 50-150%, a light transmittance of toluene extract of not less than 90% and a hydrogen emitting
ratio at 2000° C. of not less than 0.18% and a relation between the nitrogen adsorption specific surface area and the light
transmittance of toluene extract satisfies the following equation (II):
0.0283×A×(100−B)≤20 (II)
(wherein A is a nitrogen adsorption specific surface area and B is a light transmittance of toluene extract).
|