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. 17, 2004
Filed:
Aug. 30, 2001
Applicant:
Inventors:
Hans-Joachim Graf, Stratford, CA;
Yuding Feng, Stratford, CA;
Assignee:
Cooper Technology Services, LLC, Findlay, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J 5/10 ; C08K 3/04 ; C08L 2/316 ;
U.S. Cl.
CPC ...
C08J 5/10 ; C08K 3/04 ; C08L 2/316 ;
Abstract
Vulcanized ethylene-propylene-diene (EPDM) rubbers are disclosed that are particularly suited for use in dynamic applications as a replacement for natural rubber parts. The ethylene-propylene-diene rubbers exhibit excellent thermal and oxidative resistance while displaying tensile strength and dynamic fatigue resistance comparable to similar compounds based on natural rubber. The ethylene-propylene-diene rubbers comprise a high molecular weight EPDM, a processing oil, a carbon black, and a cure system containing sulfur, tetramethylthiuram-disulfide and 2-mercaptobenzothiazole.