Near-infrared absorptive layer-forming composition and multilayer film comprising near-infrared absorptive layer

摘要

A composition comprising a polymer comprising repeat units selected from formulae (1) to (4), an aromatic ring-containing polymer, a near-infrared absorbing dye, and a solvent is used to form a near-infrared absorptive film. R¹, R⁷, R⁹, and R¹⁴ are H, methyl, fluorine or trifluoromethyl, R² to R⁶ are H, F, trifluoromethyl, —C(CF₃)₂OR¹⁶, alkyl or alkoxy, at least one of R² to R⁶ being F or a fluorinated group, R¹⁶, R⁸ and R¹³ are H or a monovalent organic group, L¹ is a single bond or —C(═O)O—, m is 0 or 1, L² is a di- or trivalent hydrocarbon group, n is 1 or 2, R¹⁰ to R¹² are H, hydroxyl, halogen or a monovalent organic group, and R¹⁵ is a fluorinated C₂-C₁₅ hydrocarbon group.;