Abstract:
In the manufacture of a polyurethane by the reaction of a polyol with a polyisocyanate in the presence of a catalyst and in the absence of water, the catalyst used is an organic vanadium compound, preferably a vanadium or vanadyl alcoholate or phenolate, having the formula: (Y)mV(YR)a 2m WHEREIN: V is a vanadium atom Y is an oxygen or sulfur atom R is an organic radical, which can be alike or different if the molecule contains more than one A IS 4 OR 5 M IS 0 OR 1 WHEN A IS 4, AND 1 WHEN A IS 5.
Abstract:
In the manufacture of a polyurethane by the reaction of a polyol with a polyisocyanate in the presence of a catalyst and in the absence of water, the catalyst used is an organic zirconium compound, preferably a zirconium alcoholate or phenolate, having the formula: (Y)mZr(YR)4 2m WHEREIN: Zr is a zirconium atom Y is an oxygen or sulfur atom R is an organic radical of up to 12 carbon atoms, which can be alike or different M IS 0 OR 1.