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, 2007
Filed:
Sep. 03, 2004
Jean-pierre Delarche, Lachassagne, FR;
Stefan Breunig, Villette de Vienne, FR;
Sebastien Sterin, St-Cyr au Mont d'Or, FR;
Jean-Pierre Delarche, Lachassagne, FR;
Stefan Breunig, Villette de Vienne, FR;
Sebastien Sterin, St-Cyr au Mont d'Or, FR;
Rhodia Chimie, Aubervilliers, FR;
Abstract
Organosilicon compounds having at least one ≡SiH unit per molecule are functionalized via heterogeneous catalysis into, for example, epoxidized POS by hydrosilylation between an ethylenically unsaturated epoxide such as VCMX and a hydrogenated POS of the MDD'M type with M=RSiO, D=R—SiO, D′=RH=SiO, in which R=alkyl, and wherein the viscosity of the final product is controlled, i.e., to limit the parasitic reactions of cationic polymerization by opening of heterocycles, resulting in partial or total gelling of the reaction mixture, said hydrosilylation characteristically being carried out in the presence of at least one inorganic non-nucleophilic base and, optionally, water.