The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2009
Filed:
Apr. 19, 2004
Atsushi Nakayama, Kodaira, JP;
Hiroshi Yamada, Kodaira, JP;
Atsushi Nakayama, Kodaira, JP;
Hiroshi Yamada, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
This invention relates to a rubber composition possessing high wear resistance and low heat buildup, and more particularly to 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 dibutyl phthalate (DBP) absorption number of 40-180 cm/100 g, a nitrogen adsorption specific surface area (NSA) of 40-300 m/g, a tint strength (TINT) of 50-150% and a light transmittance of toluene extract of not less than 90% and a relation between the nitrogen adsorption specific surface area and the light transmittance of toluene extract satisfies the following equation (I):0.0283××(100−)≦40  (I)(wherein A is a nitrogen adsorption specific surface area and B is a light transmittance of toluene extract).