Momentive Performance Materials Gmbh

Bruce Barbera

Vikram Kumar

Misty Weiyu Huang

John P Banevicius

Brendan John O'Keefe

John Banevicius

A batch or continuous process for preparing silylated polymers having low color and color stability comprising silylating a prepolymer having reactive functional groups with a silylating agent and optionally quenching the silylated polymer, where a stabilizer package containing at least one phosphite stabilizing agent is used.

Process for the preparation of silylated polymers having low color and color stability

A continuous process for preparing a silylated polymer comprising a silylation step where a prepolymer having reactive functional groups, a first intermediate product, is reacted continuously with a silylating agent in an endcapping tubular reaction unit to form a second intermediate product, and where at least a portion of the second intermediate product is backmixed continuously with the first intermediate product to form the silylated polymer. The continuous process may further comprise a stabilization step, a quenching step or both a stabilization step and a quenching step.

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Sleepy Hollow, NY, United States of America

Bruce Barbera