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:
Mar. 13, 2001
Filed:
Mar. 26, 1998
Applicant:
Inventors:
Shuichi Sakamoto, Akashi, JP;
Masato Kawase, Takarazuka, JP;
Noboru Wakabayashi, Kobe, JP;
Isamu Tsumori, Amagasaki, JP;
Marina Kotani, Akashi, JP;
Yoichi Mizuno, Osaka, JP;
Assignee:
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 7/00 ; C08L 9/00 ; C08L 9/06 ;
U.S. Cl.
CPC ...
C08L 7/00 ; C08L 9/00 ; C08L 9/06 ;
Abstract
A rubber composition which is superior in ozone resistance and is hard to be discolored brown and white which comprises 0.5 to 2.5 parts by weight of a wax containing a component with 45 or more carbon atoms and having an average number of carbon atoms of 28 to 38 and 3.0 to 7.0 parts by weight of antioxidant containing 30 to 100% by weight of N-(1-methylheptyl)-N′-phenyl-p-phenylenediamine per 100 parts by weight of a diene rubber component.