Patent ID: 6100309
Filing Date: 2000-08-08
Classification: C08G,C08J

Abstract:
A process for preparing elastic, flexible slabstock foams by actingA) polyisocyanates withB1) at least one polyol having a molecular weight from 2,000 to 10,000, having a functionality of 2 to 4, which have at least two hydrogen atoms capable of reacting with said polyisocyanates;B2) at least one polyol having a molecular weight from 400 to 3,000, having a functionality of 4 to 8 and having at least four hydrogen atoms capable of reacting with isocyanates;C) water and optionally, organic blowing agents;D) stabilizers;E) activators;F) additives and auxiliary agents;G) optionally, low molecular weight cross-linking agents with a molecular weight of 32 to 399; andH) liquid CO.sub.2, which is used as an additional blowing agent and is decompressed in a decompression chamber containing fine-meshed gratings upstream of the discharge point to the conveyer belt.