Patent ID: 8372515

Claim:
A coating composition comprising (a) at least one silane of the general formula (1): or hydrolyzates or condensates thereof wherein each occurrence of R 1 independently is a hydrogen atom, an acyl, a monovalent hydrocarbyl, or an alkoxy-substituted alkyl group of from 1 to 16 carbon atoms; each occurrence of R 2 independently is alkyl, alkoxy-substituted alkyl, aryl, or aralkyl group of from 1 to 16 carbon atoms; each occurrence of R 3 independently is a covalent chemical bond or a linear, branched or cyclic divalent organic group of from 1 to 12 carbon atoms; each occurrence of Y independently is a mono-, di- or polyvalent organofunctional group of valence m; each occurrence of subscripts a, b, m and n is independently an integer where a is 0 to 3; b is 0 to 2; and m is 1 to 4; (b) at least one silicon-based polyether copolymer of the general formula (2): (R 4 )(R 5 )(R 6 )SiR 7 Si(R 8 )(R 9 )[OSi(R 10 )(R 11 )] x R 12 (C 2 H 4 O) d (C 3 H 6 O) e (C 4 H 8 O) f R 13 (2) wherein each occurrence of R 4 , R 5 , R 6 , R 8 , R 9 , R 10 and R 11 independently is a monovalent hydrocarbyl group of from 1 to 10 carbon atoms; each occurrence of R 7 independently is a divalent hydrocarbylene group of 1 to 3 carbon atoms; each occurrence of R 12 independently is a divalent organic group having the structure: —CH 2 —CH(R 14 )(R 15 ) g O— where each occurrence of R 14 independently is a hydrogen atom or methyl; each occurrence of R 15 independently is a divalent alkylene radical of 1 to 6 carbon atoms; and the subscript g is 0 or 1; each occurrence of R 13 independently is selected from the group consisting of a hydrogen atom, a monovalent hydrocarbon group, and an acyl group of 1 to 6 carbon atoms; and each occurrence of the subscripts d, e, f and x is an integer where d is 2 to 20, e is 0 to 18, f is 0 to 18 and x is 0 or 1 with the proviso that 2≦d+e+f≦20; and (c) water, with the proviso that, where the composition comprises condensates of silane (1), it may have a degree of polymerization of between 2 and 50.