Patent ID: 8722307

Claim:
A near-infrared absorptive layer-forming composition comprising (A) at least one polymer comprising repeat units having an oxirane structure and/or an oxetane structure, said units capable of undergoing crosslinking reaction with the aid of heat or acid, and repeat units of at least one type selected from the general formula (2) wherein R 7 is hydrogen, methyl, fluorine or trifluoromethyl, R 8 is a straight, branched or cyclic, monovalent organic group of 1 to 20 carbon atoms, L 2 is a straight, branched or cyclic, di- or trivalent hydrocarbon group of 1 to 15 carbon atoms, and n is 1 or 2, (B) at least one aromatic ring-containing polymer other than the polymer (A), polymer (B) being a polymer resulting from polyaddition and comprising a repeat unit derived from acenaphthylene or a polymer resulting from polycondensation of an aromatic ring-bearing compound, (C) at least one near-infrared absorbing dye which comprises at least one cyanine dye capable of absorbing radiation in a wavelength range of 500 to 1,200 nm, wherein said near-infrared absorbing dye (C) has an anion of the general formula (14), wherein A 1 is hydrogen or trifluoromethyl, R 0 is hydroxyl or —OC(═O)—R′, and R′ is a straight, branched, or cyclic C 1 -C 50 monovalent hydrocarbon group which may contain a heteroatom, and (D) at least one solvent.