Patent ID: 8715406

Claim:
A coating composition comprising a lacquer and an UV-absorbing compound which is soluble in polar media and having the formula (I) A-X(-T-Q-P) n (I), wherein A represents wherein Y 1 and Y 2 , independently of one another, represent substituents having the formula wherein r is 0 or 1, R 1 , R 2 , and R 3 , independently of one another, represent H, OH, C1-20 alkyl, C4-12 cycloalkyl, C2-20 alkenyl, C1-20 alkoxy, C4-12 cycloalkoxy, C2-20 alkenyloxy, C7-20 aralkyl, halogen, —C≡N, C1-5 haloalkyl, —SO2R′, —SO3H, —SO3M (M=alkali metal), —COOR′, —CONHR′, —CONR′R″, —OCOOR′, —OCOR′, —OCONHR′, (meth)acrylamino, (meth)acryloxy, C6-12 aryl (optionally substituted by C1-12 alkyl, C1-12 alkoxy, CN and/or by halogen), or C3-12 heteroaryl (optionally substituted by C1-12 alkyl, C1-12 alkoxy, CN and/or by halogen) and wherein R′ and R″ represent —H, C1-20 alkyl, —C4-12 cycloalkyl, C6-12 aryl (optionally substituted by C1-12 alkyl, C1-12 alkoxy, CN and/or by halogen) or C3-12 heteroaryl (optionally substituted by C1-12 alkyl, C1-12 alkoxy, CN and/or by halogen), X represents a linear or branched linker, wherein between the O atom of group A and each T group there is a chain of at least 4 atoms selected from the group consisting of carbon, oxygen, nitrogen, sulfur, phosphorus and silicon in the chain, T represents a urethane group —O—(C═O)—NH— or a urea group —NH—(C═O)—NH—, Q represents —(CH 2 ) m —, wherein m is 1,2 or 3, P represents a mono-, di- or tri-alkoxysilane group, and n represents an integer from 1 to 5, wherein the lacquer is a hybrid lacquer obtained by a sol-gel process.