Patent ID: 6828381
Filing Date: 2004-12-07
Classification: C08L,C09D,Y10T

Abstract:
A sol-gel coating material comprising:(A) an acrylate copolymer solution comprising at least one acrylate copolymer comprising a reaction product of: a1) at least one (meth)acrylic ester that is substantially free of acid groups, a2) at least one ethylenically unsaturated monomer comprising at least one hydroxyl group per molecule and is substantially free of acid groups, and a3) at least one ethylenically unsaturated monomer comprising at least one acid group per molecule that is convertible into a corresponding acid anion group; (B) a stock coating material comprising a hydrolysis and condensation product of at least one hydrolyzable silane of the general formula I SiR4â€ƒâ€ƒ(I) â€ƒwherein R is at least one of a hydrolyzable group, a hydroxyl group, and a nonhydrolyzable group with the proviso that there is at least one hydrolyzable group in the stock coating material; and (C) a sol comprising a hydrolysis, condensation, and complexing product of C1) at least one hydrolyzable metal compound of the general formula II MRnâ€ƒâ€ƒ(II) â€ƒwherein: M is at least one of aluminum titanium, and zirconium, R is at least one of a hydrolyzable group, a hydroxyl group, and a nonhydrolyzable group with the proviso that there is at least one hydrolyzable group in the compound, and n=3 or 4; C2) at least one organic thio compound of the general formula III S(R1X)2â€ƒâ€ƒ(III) â€ƒwherein: R1 comprises a divalent radical derived from at least one of a first organic compound, a second organic compound, and a third organic compound: wherein the first organic compound is at least one of an alkane, an alkene, a cycloalkane, a cycloalkene, an alkylcycloalkane, an alkylcycloalkene, an alkenylcycloalkane, and an alkenylcycloalkene, wherein the first organic compound is substituted or unsubstituted, wherein the first organic compound is linear or branched, and wherein the first organic compound contains no heteroatom or at least one heteroatom in the compound; wherein the second organic compound is at least one of a substituted aromatic, an unsubstituted aromatic, a substituted heteroaromatic, and an unsubstituted heteroaromatic; and wherein the third organic compound is at least one of an aromatic and a heteroaromatic, wherein the aromatic and the heteroaromatic are substituted with a substituent that is at least one of alkyl-, alkenyl-, cycloalkyl-, cycloalkenyl-, alkylcycloalkyl-, alkylcycloalkenyl-, alkenylcycloalkyl-, and alkenylcycloalkenyl, wherein the substituent is substituted or unsubstituted, and wherein the substituent contains no heteroatom or at least one heteroatom in the substituent; X is at least one of â€”OH, â€”SH, and â€”NHR2, wherein R2 is at least one of a hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, and a cycloalkyl group containing 1 to 6 carbon atoms; and C3) at least one hydrolyzable silane of the general formula I.