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:
Jul. 08, 1997
Filed:
Jan. 03, 1996
Applicant:
Inventors:
Assignee:
Japan Synthetic Rubber Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08F / ;
U.S. Cl.
CPC ...
526282 ; 5261692 ; 526283 ; 526336 ; 524554 ; 521150 ;
Abstract
A rubber composition excellent in shape-retainability also in processibility, compression set and the like, which comprises a single ethylene-.alpha.-olefin-non-conjugated diene copolymer which has (1) a Mooney viscosity (ML.sub.1+4, 100.degree. C.) of 80 to 200, (2) a weight average molecular weight/number average molecular weight ratio of 6 or more as measured by a gel permeation chromatography (GPC), and (3) a stress-retention of 0.2 or more after 100 seconds at 80.degree. C. in a compression type stress-relaxation test.