申请人:Ohashi Masaki
公开号:US09069245B2
公开(公告)日:2015-06-30
A composition comprising (A) a near-infrared absorbing dye of formula (1), (B) a polymer, and (C) a solvent is used to form a near-infrared absorptive layer. In formula (1), R1 and R2 are a monovalent hydrocarbon group which may contain a heteroatom, k is 0 to 5, m is 0 or 1, n is 1 or 2, Z is oxygen, sulfur or C(R′)(R″), R′ and R″ are hydrogen or a monovalent hydrocarbon group which may contain a heteroatom, and X− is an anion.
该组合物包括(A)公式(1)的近红外吸收染料,(B)聚合物和(C)溶剂,用于形成近红外吸收层。在公式(1)中,R1和R2是可以包含杂原子的一价碳氢基团,k为0至5,m为0或1,n为1或2,Z为氧、硫或C(R′)(R″),R′和R″为氢或可以包含杂原子的一价碳氢基团,X−为阴离子。