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:
Jan. 03, 1978
Filed:
Aug. 13, 1976
Roger J Eldred, Detroit, MI (US);
Stanley A Iobst, Sterling Heights, MI (US);
Ismat A Abu-Isa, Birmingham, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
In an exemplary embodiment a high temperature and oil resistant elastomer composition includes the peroxide-induced reaction product of, by weight, 100 parts ethylene-propylene-diene rubber, about 20 parts of a suitable crosslinking monomer, about 8 parts of a chlorinated organic material such as Chlorowax LV, about 10 parts of a suitable hindered phenolic antioxidant 10 to 15 parts zinc oxide and 5 to 8 parts magnesium oxide. The elastomer formulation may optionally contain suitable reinforcing and/or semireinforcing fillers and processing oils. A similar ethylene-propylene rubber formulation may be prepared. The resulting elastomer formulations have remarkable oil resistance and retain a significant elongation even after aging at 177.degree. C. (350.degree. F.) for 168 hours.