Patent ID: 6221929
Filing Date: 2001-04-24
Classification: B22C,C08G,C08K

Abstract:
A foamed rigid polyurethane-forming composition, which comprises:a polyol with a hydroxyl value of 200 to 700 (a); anorganic polyisocyanate (b); a filler including an inorganic powder and/or a hollow microsphere (c); and a dehydrating agent (d);wherein said composition further comprises 3 to 30 percent, based on the total weight of the composition, of a (poly) oxyalkylene compound (e) expressed by the general formulaZ((AO).sub.m X).sub.nin which ""A "" represents an alkylene group with two to four carbon atoms, ""X"" is a hydrocarbyl group or an acyl group, ""m"" is a value of one to one hundred, ""n"" is an integer of one to six, ""Z"" is a residue of a compound containing n active hydrogen atoms, from which the active hydrogen atoms have been removed, at least one of Z and X contains 5 to 20 carbon atoms, and ""X"" is either the same or different when ""n"" is two or more.