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US 4,731,411 AGranted
Process for producing alkoxy-terminated polysiloxanes
AssigneeGeneral Electric Company
InventorGary M. Lucas
Life of this patent
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Abstract
The present invention relates to a alkoxy-functional one-component RTV composition. In particular, there is disclosed processes for producing an alkoxy-terminated diorganopolysiloxane by reacting a vinyl or silanol containing siloxane with an alkoxy-functional hydride containing silane in the presnce of a platinum catalyst.
Claims14
A process for producing alkoxy-terminated polysiloxanes which can be used to produce RTV silicone rubber compositions, comprising, anhydrously reacting
- (1) a silanol-terminated diorganopolysiloxane having a viscosity in the range of 100 to 1,000,000 centipoise at 25.degree. C. where the organo groups are monovalent hydrocarbon radicals with
- (2) a polyalkoxy cross-linking agent of the formula, ##STR16## where R.sup.1 is a C.sub.(1-8) monovalent hydrocarbon radical, R.sup.2 is a C.sub.(1-13) monovalent hydrocarbon radical, b is 0, 1 or 2;
- (3) in the presence of a platinum or platinum-containing catalyst.
Dependencies are inferred from the claim text.