CATALYSTS FOR LOW TEMPERATURE CURE OF BLOCKED ISOCYANATES.

摘要

The present invention comprises a curable composition comprising: (i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate; (ii) a functional compound containing reactive hydrogen; (iii) a triorganotin catalyst for promoting the reaction of the blocked reactive component with the functional compound. The composition may also be admixed with water. The invention also relates to a method for curing a blocked isocyanate or blocked isothiocyanate at a temperature below about 150 DEG C. which comprises combining a triorganotin compound with the blocked reactive component and functional compound and heating at a temperature less than about 150 DEG C. to obtain a cured urethane or thiourethane.