Dow Corning Corporation

Jay Brian Rose

Lenin J Petroff

Kimmai Thi Nguyen

Michael Ward Skinner

Leon Neal Cook

Julie Ann Hayes

Jodi Lynnette Jibben

Lenin James Petroff

Methods for making silicone-organic copolymers are disclosed involving the manipulation of polymerization chain terminators allowing for polymer molecular weight control.

Methods for making silicone-organic copolymers

A method of making siloxane-based polyamides which includes at least one repeating unit represented by the formula ##STR1## wherein X is a linear or branched C.sub.1 -C.sub.30 alkylene chain; Y is a linear or branched C.sub.1 -C.sub.20 alkylene chain; DP is an integer having a value of 10-500; n is an integer having a value of 1-500. The method involves heating an intimate reaction mixture containing an olefinic acid and an organic diamine at a temperature greater than 100.degree. C. and forming an organic diamide; and thereafter reacting the organic diamide with a hydride-terminated polydimethylsiloxane in the presence of a hydrosilylation catalyst to form the siloxane-based polyamide.

Method of making siloxane-based polyamides

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Midland, MI, United States of America

Jay Brian Rose