Patent ID: 6271293
Filing Date: 2001-08-07
Classification: C08G,C09D

Abstract:
An anti-contamination coating composition comprising a polyurethane-forming component (PU-I) obtained by mixing a polyol compound (A1) having a weight-average molecular weight of 5000 to 80000 a Tg of from 100 to 150.degree. C. and a hydroxyl group value of 20 to 150 (KOH mg/g) with a polyisocyanate compound (B1) in a NCO/OH equivalent ratio of 0.6 to 1.4; and a tetraalkoxysilane condensate, wherein the tetraalkoxysilane condensate is present in the amount of 1.0 to 40.0 parts by weight in term of SiO.sub.2 relative to 100 parts by weight of the solid content of the polyol compound, and wherein the tetraalkoxysilane condensate is a tetraalkoxysilane condensate (C1), which has an average condensation degree of 4 to 20 and has an alkyl group having 1 to 2 carbon atoms and an alkyl group having 3 to 10 carbon atoms, the alkyl group having 3 to 10 carbon atoms being contained in the amount of 5 to 50% by equivalent based on all alkyl groups in the condensate.