MANUFACTURE OF FOAM WITH SKIN LAYER

摘要

A process for making integral skin foams which comprises reacting into a closed mould : A) an organic polyisocyanate B) an isocyanate-reactive composition comprising : (i) a catalytically effective amount of a urethane-promoting catalyst and optionally a urea-promoting catalyst, (ii) a catalytically effective amount of a carbodiimide-promoting catalyst, and (iii) an isocyanate-reactive compound; in the presence of C) an inert physical blowing agent. The process provides integral skin foams having good skin properties at reduced physical blowing agent levels.