Dow Corning Corporation

Joseph S Steger

Lenin J Petroff

Michael Allen Stanga

James Darryl Thornsberry

An improved process is provided for the preparation of siloxane-oxyalkylene block copolymer surfactant compositions which utilize a hydrosilylation reaction with a phenyl ether as the reaction solvent and the use of a phenyl ether as a cold blend additive. Ethylene glycol phenyl ether is the preferred reaction solvent or cold blend additive.

Production of organopolysiloxane copolymers with a phenyl ether solvent

An improved process is provided for the preparation of siloxane-oxyalkylene block copolymer surfactant compositions which utilize a hydrosilylation reaction with a phenyl ether as the reaction solvent. The reaction solvent need not be removed from the block copolymer, particularly when the block copolymer is used as a surfactant for polyurethane foam formulations. Ethylene glycol phenyl ether is the preferred reaction solvent.

Growing community of inventors

Freeland, MI, United States of America

Joseph S Steger