Patent ID: 7879407

Claim:
A coated article comprising a substrate having thereon a cured layer of a coating material comprising (A) at least 50% by weight, based on the amount of nonvolatile substances in the coating material, of at least one compound (A1′) comprising an adduct of polyisocyanate and alkoxysilane, and further wherein (A1′) comprises at least one reactive group of the formula II: —NR—C(O)—N—(X—SiR″ x (OR′) 3-x ) n (X′—SiR″ y (OR′) 3-y ) m (R′″) o (II) where R is a hydrogen, alkyl, cycloalkyl, aryl or aralkyl, the carbon chain being uninterrupted or interrupted by nonadjacent oxygen, sulfur or NRa groups, where Ra is an alkyl, cycloalkyl, aryl or aralkyl, X is a linear and/or branched alkylene or cycloalkylene radical of 2 to 20 carbon atoms, X′ is a linear and/or branched alkylene or cycloalkylene radical of 2 to 20 carbon atoms, R′ is hydrogen, alkyl or cycloalkyl, wherein the carbon chain of the alkyl cycloalkyl is uninterrupted or interrupted by nonadjacent oxygen, sulfur or NRa groups, R″ is an alkyl, cycloalkyl, aryl or aralkyl, wherein the carbon chain of the alkyl, cycloakyl or aralkyl is uninterrupted or interrupted by nonadjacent oxygen, sulfur or NRa groups, R′″ is an alkyl, cycloalkyl, aryl or aralkyl, wherein the carbon chain of the alkyl, cycloakyl or aralkyl is uninterrupted or interrupted by nonadjacent oxygen, sulfur or NRa groups, n=0 to 2, m=0 to 2, o=0 or 1, x=0 to 2, m+n+o=2, and y=0 to 2, (B) a catalyst for the crosslinking of the —Si(OR′) 3-x units selected from the group consisting of boron chelates, boron alkoxides, boron esters, aluminum chelates, aluminum alkoxides, aluminum esters, titanium chelates, titanium alkoxides, titanium esters, zirconium chelates, zirconium alkoxides, zirconium esters and nanoparticles of compounds of the elements aluminum, silicon, titanium or zirconium, and (C) an aprotic solvent or a mixture of aprotic solvents, wherein the reactive groups (II) are crosslinked in the course of curing the coating material, and further wherein said cured layer has a thickness of at least 40 μm and exhibits properties upon nanoindentation testing as follows: a. elastic volume recovery >86.5%, b. plastic deformation <3.5%, c. brittle deformation <10.0%.