Patent ID: 8323536
Filing Date: 2012-12-04
Classification: C07D,C09B,G02B

Abstract:
1. 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 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.