Preparation of polymer polyol

Details Preparation of polymer polyol Preparation of polymer polyol

C - Chemistry, Metallurgy

08

L

400/105, 403/30

C08L 71/02 (2006.01) C08G 18/38 (2006.01) C08G 18/50 (2006.01) C08G 18/63 (2006.01)

Patent

CA 1308206

28156-1D ABSTRACT OF THE DISCLOSURE PREPARATION OF POLYMER POLYOL A novel family of fluid polymer/polyols is prepared from modified polyols. 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. The polymer/polyols can be reacted with polyisocyanates to form polyurethanes with improved load-carrying properties.

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