Patent ID: 8323536

Claim:
A near-infrared absorptive film-forming composition comprising: at least one polymer with a weight average molecular weight (Mw) of 1,000 to 200,000; at least one solvent; and from 20 to 100 parts by weight per 100 parts by weight of the overall solids in the film- forming composition of at least one near-infrared absorbing dye represented by the general formula (2): wherein R 1 is hydrogen, halogen, cyano or a straight, branched or cyclic C 1 -C 20 monovalent hydrocarbon group which may contain a heteroatom, R 2 and R 22 are each independently hydrogen or a straight or branched C 1 -C 10 monovalent hydrocarbon group, R 2 and R 22 may bond together to form a ring with the carbon atoms to which they are attached and the intervening carbon atom, R 3 and R 33 are each independently a straight, branched or cyclic C 1 -C 20 monovalent hydrocarbon group which may contain a heteroatom, a1 and a2 are each independently an integer of 0 to 5, A 1 is hydrogen or trifluoromethyl, R 0 is hydroxyl or —OC(═O)—R′ wherein R′ is a straight, branched, or cyclic C 1 -C 50 monovalent hydrocarbon group which may contain a heteroatom, and the partial structures in formula (2): are each independently an aliphatic or aromatic nitrogen-containing heterocyclic compound of 4 to 15 carbon atoms which may contain a heteroatom, and wherein when the film-forming composition is coated, the resulting film containing the dye capable of absorbing radiation in a wavelength 800 to 1,200 nm.