General Electric Company

Momentive Performance Materials Gmbh

Nancy E Gosh

John S Razzano

Slawomir Rubinsztajn

Anping Wang

A process for making a fluorosiliconeMDDM'where

Process for producing controlled viscosity fluorosilicone polymers

The invention comprises a method for producing fluorosilicone oil by reacting a fluorosilicone trimer with a triorganosilanol in the presence of an alkali silanolate. The polymer may be condensed to increase viscosity and decrease the silanol content of the polymer, and volatiles may be removed by stripping. The method provides a high yield of fluorosilicone oil of narrow viscosity ranges in an efficient reaction, and produces small amounts of waste.

Process for producing fluorosilicon polymers

Process for making silanol stopped oligomeric materials

A process for making organosilyl end-stopped diorganopolysiloxane fluid is provided comprising the steps of reacting an organic end-stopping compound with a fluorosilicone trimer in the presence of a catalytic amount of linear phosphonitrilic acid, and inactivating the linear phosphonitrilic acid, thereby forming organosilyl end-stopped diorganopolysiloxane fluid.

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East Greenbush, NY, United States of America

Nancy E Gosh