Patent ID: 7445848

Claim:
An ambient temperature curing coating composition comprising: a polysiloxane having the formula wherein each R1 is selected from alkyl, aryl, and alkoxy groups having up to six carbon atoms, reactive glycidoxy groups, and OSi(OR3) 3 groups, wherein each R3 independently has the same meaning as R1, each R2 is selected from alkyl and aryl groups having up to six carbon atoms, and wherein n is selected so that the molecular weight of the polysiloxanes is in the range of from 500 to about 2,000; an alkoxysilyl-functional acrylic polymer prepared by copolymerising at least three different olefinically unsaturated monomers, wherein at least one of the monomers is an alkoxysilyl-functional olefinically unsaturated monomer; and optionally water as curing agent; wherein said coating composition comprises more than 70% by weight solids, has a viscosity of below 20 Poise at 25° C., and is substantially free of colloidal silica.