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:
Feb. 19, 1985
Filed:
Nov. 02, 1983
Applicant:
Inventors:
Hiroaki Suzuki, Aichi, JP;
Shinji Misono, Aichi, JP;
Assignee:
Tokai Carbon Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524496 ; 106307 ; 423445 ; 423460 ; 423461 ; 524525 ;
Abstract
According to this invention, a rubber composition is provided, which comprises 100 parts by weight of a rubber component and 25 to 250 parts by weight of carbon black, which carbon black falls within the property range of an electron-microscopic average particle diameter (dn) of above 31 millimicron, an iodine adsorption number of 35 to 60 mg/g and a dibutyl phthalate absorption number (DBP) of 90 to 150 ml/100 g and further has a selected property such that the Dst mode diameter (m.mu.) is below the value (m.mu.) obtained from the following equation: