Patent ID: 6420493
Filing Date: 2002-07-16
Classification: C08G

Abstract:
A two component chemically thermoset composite resin, comprising:a solvent free polyisocyanate component selected from at least one of an aromatic polyisocyanate and an aliphatic polyisocyanate; and a solvent free polyol component selected from at least one of a polyether polyol and a polyester polyol, the polyol including: not less than 10% and not more than 40% by weight of a diethylene glycol-phthalic anhydride based polyester polyol; not less than 60% and not more than 90% by weight of one or more organic polyhydroxy compounds having an average weight of 70-400 and an average hydroxyl functionality of 2-6, the polyhydroxy compounds being selected from: amine initiated-hydroxyl terminated polyoxyalkylene polyol, branched polyol with ester and ether groups, propoxylated glycerol, polyoxyalkylene polyol; and a compatible wetting agent; the polyisocyanate component and the polyol component being in relative proportions in accordance with an OH/NCO equivalent ratio of 1:1 to 1:2.