SETT FOR FRAMSTELLNING AV POLYURETANER GENOM OMSETTNING AV EN PARTIELLT BLOCKERAD ISOCYANATFORENING I NERVARO AV EN MONOORGANOTENN KATALYSATOR

摘要

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.