PREPARATION OF RESILIENT FOAMS BASED ON A MELAMINE/FORMALDEHYDE CONDENSATE

摘要

O.Z. 0050/033,801 A process for the preparation of a resilient foam based on a melamine-formaldehyde condensate, wherein a very concentrated aqueous solution or dispersion which contains a melamine/formaldehyde precondensate, an emulsifier, a volatile blowing agent and a curing agent is foamed under conditions such that initially there is only a slight increase in viscosity and the curing process, accompanied by a large increase in viscosity, only commences when foaming has substantially ended.