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:
Apr. 17, 1979
Filed:
Mar. 07, 1978
Applicant:
Inventors:
Douglas C Edwards, Sarnia, CA;
Kyosaku Sato, Sarnia, CA;
Assignee:
Polysar Limited, Sarnia, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ;
U.S. Cl.
CPC ...
260 4232 ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 4231 ; 260 4233 ; 260 4234 ; 260 4235 ; 260 4237 ; 260 4239 ; 260 4241 ; 260 4257 ;
Abstract
There is provided a process, and the product of that process, for the production of improved silica or calcium silicate filled rubbery vulcanizates in which a polymer containing hydroxyl groups is mixed with silica or calcium silicate and an amine, the mixture is subjected to shearing at an elevated temperature and vulcanized to yield the improved vulcanizates. Such vulcanizates may be used in place of carbon black vulcanizates.