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. 03, 1992
Filed:
Mar. 09, 1990
Applicant:
Inventors:
Assignee:
Sumitomo Chemical Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08F / ;
U.S. Cl.
CPC ...
521140 ; 521144 ;
Abstract
A sponge is disclosed, comprising a copolymer of ethylene, an .alpha.-olefin, and a diolefin, said copolymer (a) containing the ethylene units and the .alpha.-olefin units at a weight ratio of from 73:27 to 40:60, (b) having a Mooney viscosity (ML.sub.1+4 121.degree. C.) of from 135 to 200, and (c) containing the diolefin units giving an iodine value of from 10 to 36. A sponge composition is also disclosed, comprising 100 parts by weight of the aforesaid copolymer and from 30 to 130 parts by weight of a plasticizer.