Process for the preparation of articles and fills from rigid and flexible polyurethane foams.

摘要

In the production of mouldings and fillings made from rigid and flexible polyurethane foams and rigid polyurethane foams containing isocyanurate structures made from polyol and isocyanate and activator and optionally further additives, flaws in the foam can be avoided by increasing the amount of activator during the preparation of the reaction mixture - considered over time - to give a setting time which commences simultaneously everywhere as far as possible.