申请人:Eastman Kodak Company
公开号:US04025349A1
公开(公告)日:1977-05-24
Novel methyne dyes comprising two auxochromic groups of the type used in a cyanine or merocyanine dye linked by a carbon atom chain wherein each of the carbon atoms have an unsaturated linkage to at least one adjacent carbon atom in the chain and at least one pair of carbon atoms in the chain being joined by a triple bond or, in an alternate resonance form, the chain including three consecutive carbon to carbon double bonds. The dyes are useful as spectral sensitizing dyes for silver halide emulsions and as intermediates for synthesizing chain-substituted methine dyes.
新型甲基染料包含两个辅基团,这些辅基团与靛菁染料或甲醛靛菁染料中使用的辅基团相同,由一个碳原子链连接,其中每个碳原子在链中至少与一个相邻的碳原子具有不饱和键,并且链中至少有一对碳原子通过三重键连接,或者在另一种共振形式中,该链包括三个连续的碳到碳双键。这些染料可用作银卤化物乳剂的光谱增敏染料,并用作合成链取代甲基染料的中间体。