Patent ID: 6075064
Filing Date: 2000-06-13
Classification: C08G,C08L

Abstract:
A rigid, hydrophobic polyurethane foam which is the reaction product of(1) a polyisocyanate with(2) a polyol mixture made up of(a) at least one OH-functional polyester based on a C.sub.9-22 fatty acid having a molecular weight of from about 260 to about 2,000,(b) at least one non-functional oligomeric polyolefin having a molecular weight of from about 700 to about 6,000 and optionally(c) at least one polyol and/or polyamine having a functionality of at least two and a molecular weight of from about 62 to about 8,000 which is different from (2)(a), in the presence of(3) a blowing agent, and optionally(4) an auxiliary agent or additive.