Method of producing polyurethanes

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...

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2604297, 521126, 528 58, C08G 1880, C08G 1814, C08G 1824, C07F 722

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043225195

ABSTRACT:
The use of a catalytic amount of a specific monoorganotin compound, namely a monoalkyltin oxide, a monocarboxylate thereof, a monoalkyltin sulfide or monophenyltin oxide, in producing polyurethanes by reacting under heating an at least partially blocked polyisocyanate and an active hydrogen-containing compound significantly lowers the baking temperature and gives cured coatings with a smooth surface and good performance.

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