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. 20, 1993
Filed:
Oct. 25, 1991
Hiroki Konno, Annaka, JP;
Yasushi Yamamoto, Takasaki, JP;
Motoo Fukushima, Kawasaki, JP;
Hironao Fujiki, Takasaki, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A modified organopolysiloxane comprising [R.sup.1.sub.2 SiO.sub.2/2 ] or [R.sup.1.sub.3 SiO.sub.1/2 ] units wherein R.sup.1 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 12 carbon atoms, at least two R.sup.1 substituents per molecule being replaced by specific isocyanurate or cyanurate groups is a vulcanization activator for assisting in vulcanization of fluorocarbon rubber or fluorocarbon/silicon rubber compositions with peroxide vulcanizing agents. It is prepared by reacting triallyl isocyanurate, triallyl cyanurate or a derivative thereof with dimethylchlorosilane or methyldichlorosilane in the presence of a platinum catalyst to form a chlorosilane containing diallylisocyanurate or diallylcyanurate groups, followed by hydrolysis. An alternative process is by reacting triallyl isocyanurate, triallyl cyanurate or a derivative thereof with a siloxane in the presence of a platinum catalyst.