Patent ID: 8501857

Claim:
An abrasion resistant silicone coating composition comprising (A) a hydrolytic condensate obtained by subjecting at least one compound selected from alkoxysilanes having the general formula (1) and partial hydrolytic condensates of the alkoxysilanes having the general formula (1) to (co)hydrolytic condensation, R 1 m R 2 n Si(OR 3 ) 4-m-n (1) wherein R 1 and R 2 are each independently hydrogen or a substituted or unsubstituted monovalent hydrocarbon radical, the radicals of R 1 and R 2 may bond together, R 3 is an alkyl radical of 1 to 3 carbon atoms, m and n are each independently 0 or 1, and m+n is 0, 1 or 2, (A-1) 1 to 50% by weight based on the weight of (A) of a siloxane resin having the average compositional formula (2): R 4 a Si(OR 5 ) b (OH) c O (4-a-b-c)/2 (2) wherein R 4 is each independently a C1-C18 organic radical, R 5 is each independently a C1-C4 organic radical, a, b and c are numbers satisfying 0.8≦a≦1.5, 0≦b≦0.3, 0.001≦c≦0.5, and 0.801≦a+b+c<2, the siloxane resin being solid at a temperature of up to 40° C. and having a weight average molecular weight of at least 2,000 as measured by GPC, (B) colloidal silica, (C) a urethane-modified polycarbonate grafted to a vinyl polymer and/or a urethane-modified polyester grafted to a vinyl polymer, (D) a curing catalyst, and (E) a solvent, wherein the urethane-modified vinyl polymer (C) is present in a solid content of 1 to 30% by weight based on the total solid content of the hydrolytic condensate (A) and the colloidal silica (B).