申请人:Eastman Kodak Company
公开号:US04003750A1
公开(公告)日:1977-01-18
Methine dyes comprising first and second nuclei joined by a double bond or a methine linkage. The first nuclei may be either A. a pyrido nucleus joined at the 4- or 6-carbon atom thereof to said double bond or methine linkage or, B. a 5,6-dihydropyrido nucleus joined at the 4- or 5-carbon atom to said double bond or methine linkage. The pyrido or dihydropyrido nucleus can have fused to its 1,2-side the atoms required to complete a ring containing 5 or 6 atoms. The second nuclei may be either the same as (a) or (b) or can be of the type typically used in cyanine styryl and merocyanine dyes. Such dyes are useful filter dyes and spectral sensitizers for silver halide compositions. Also described are intermediates useful in the synthesis of said dyes.
甲基染料包括由双键或甲基连接的第一和第二核。第一核可以是A.连接在4-或6-碳原子处的吡啶核,连接到所述双键或甲基连接,或B.连接在4-或5-碳原子处的5,6-二氢吡啶核,连接到所述双键或甲基连接。吡啶或二氢吡啶核可以与其1,2侧融合所需的原子以形成包含5或6个原子的环。第二核可以是与(a)或(b)相同的类型,也可以是通常用于青烯基和梅洛青染料的类型。这些染料可用作银卤化物组合物的滤光染料和光谱增感剂。还描述了合成该染料有用的中间体。