Patent ID: 6114402
Filing Date: 2000-09-05
Classification: B32B,C08G,Y10T

Abstract:
A foamable polyurethane composition for the preparation of a rigid polyurethane foam material, which foamable polyurethane composition consists essentially of:a) a polyisocyanate present in a stoichiometric amount or excess amount;b) a polyol to react with the polyisocyanate to provide a rigid polyurethane foam;c) a catalyst to effect the reaction of the polyisocyanate and the polyol;d) a blowing agent to provide for a polyurethane foam;e) an organic additive selected from the group consisting of:i) an additive monomer having one or more hydroxyl groups for reaction with the polyisocyanate; andii) an additive prepolymer prepared by the reaction of the hydroxyl groups of the additive monomer with a stoichiometric amount or excess amount of a polyisocyanate; andf) the additive monomer and additive prepolymer having ethylenically unsaturated groups which remain unreacted in the foamable composition, the ethylenically unsaturated groups selected from the group consisting of allyl groups, acrylic groups, and combinations thereof.