Preparation of polymer polyols

Details Preparation of polymer polyols Preparation of polymer polyols

C - Chemistry, Metallurgy

07

F

400/104, 400/200

C07F 7/18 (2006.01) C08G 18/38 (2006.01) C08G 18/50 (2006.01) C08G 18/63 (2006.01)

Patent

CA 1276162

ABSTRACT OF THE DISCLOSURE PREPARATION OF POLYMER POLYOL A novel family of modified polyols suitable for use in the preparation of fluid polymer/polyols is provided. The modified polyols are the reaction product obtained by reacting a silicon atom containing compound with an unmodified polyol, the silicon atom compound being one which has (a) at least olefinically unsaturated hydrocarbyl group and (b) at least one functional group which is reactable with the hydroxy groups on the polyol. Examples of such silicon atom containing compounds include vinyltriethoxysilane and vinyltrimethoxysilane. Modified polyols of the type described are particularly useful in the preparation of polymer/polyols containing high levels of polymer since they reduce the viscosity of the final polymer/polyol and decrease the tendency of the polymer/polyol to produce polymer sediment.

479907

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