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:
Sep. 12, 1989
Filed:
Mar. 02, 1989
Applicant:
Inventors:
Tadanobu Iwasa, Ichinomiya, JP;
Masataka Sasayama, Aichi, JP;
Masaki Ohashi, Shizuoka, JP;
Isao Kurimoto, Toyonaka, JP;
Assignees:
Sumitomo Chemical Company, Limited, Osaka, JP;
Toyoda Gosei Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521 95 ; 264 54 ; 521140 ; 521150 ;
Abstract
A rubber composition for producing sponge rubber products which comprises 1 to 20 parts by weight of a blowing agent and 0.1 to 0.8 part by weight of sulfur relative to 100 parts by weight of an ethylene-.alpha.-olefin-non-conjugated dienes tetrapolymer containing as non-conjugated dienes the ethylidene-norbornene component amounting to 15 to 30 in terms of iodine value and the dicyclopentadiene component amounting to 1 to 10 in terms of iodine value and having a branching index of at least 2.