Patent ID: 8415419

Claim:
A hydrophilic coating composition comprising: (A) a ternary copolymer comprising a1) a repeating unit having at least one hydrophilic group selected from the group consisting of —NHCOR 3 , —CONH 2 , —CON(R 3 ) 2 , —COR 3 , —CO 2 M, —SO 3 M, —PO 3 M, —OPO 3 M, and —N(R 3 ) 3 Z, in which R 3 represents a linear, branched, or cyclic alkyl group having from 1 to 18 carbon atoms, an aryl group, or an aralkyl group, M represents a hydrogen atom, an alkali metal, an alkaline earth metal, or an onium, and Z represents a halogen ion, a2) a repeating unit having at least one of a hydroxyl group, an epoxy group, an isocyanato group, a blocked isocyanato group, a carboxylic acid anhydride group, and an amino group, and a3) a repeating unit having at least one hydrolyzable silyl group selected from the group consisting of vinyltrimethoxysilane, vinyltriethoxysilane, γ-(meth)acrylamidopropyltriethoxysilane, and γ-(meth)acrylamidopropyltrimethoxysilane; and (B) a metal complex catalyst, wherein a content of the repeating unit a1) having at least one hydrophilic group in the ternary copolymer is 50 mol % or greater.