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:
Nov. 09, 2021
Filed:
Jan. 10, 2020
Bridgestone Corporation, Tokyo, JP;
Satoshi Hamatani, Tokyo, JP;
Hidenobu Akahane, Tokyo, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
A rubber composition that is capable of providing vulcanized rubber excellent in the abrasion resistance without the deterioration of the crack resistance and the low heat generation property is provided. The rubber composition contains: (A) a rubber component; (B) carbon black having a CTAB specific surface area of 110 to 160 m/g, a half value width ΔDof a peak including a Stokes equivalent diameter Dobtained by a centrifugal sedimentation method of 60 nm or less, and ΔD/Dof 0.95 or less; and (C) silica having a CTAB specific surface area of 200 m/g or more, has a total amount of a content (b) of the carbon black (B) and a content (c) of the silica (C) of 30 to 80 parts by mass per 100 parts by mass of the rubber component (A), and has (b)/(c) of (60 to 85)/(40 to 15).