Method of producing polyurethanes

C - Chemistry – Metallurgy – 08 – G

Patent

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402/133, 402/163

C08G 18/24 (2006.01) C08G 18/80 (2006.01)

Patent

CA 1177595

ABSTRACT OF THE DISCLOSURE The use of a catalytic amount of a specific monoorgano- tin 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 tempera- ture and gives cured coatings with a smooth surface and good performance.

365753

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