Solid particle dispersions of dyes according to the formula:
are disclosed as filter dyes for photographic elements.
In this formula, m and n are each independently 0 or 1.
R₁ and R₂ are each independently substituted or unsubstituted alkyl or substituted or unsubstituted aryl, or together with R₃ and R₄ form a heterocyclic ring.
R₃ and R₄ are each H or together with R₁ and R₂ form a heterocyclic ring.
A is a ketomethylene residue.
X represents a carboxyphenyl or sulfonamidophenyl, or a carboxy or sulfonamido substituent that is appended to an aryl ring that is part of A.
按式计算的
染料固体颗粒分散体:
式的
染料固体颗粒分散液作为照相元件的过滤
染料被公开。
式中,m 和 n 各自独立地为 0 或 1。
R₁ 和 R₂ 各自独立地为取代或未取代的烷基或取代或未取代的芳基,或与 R₃ 和 R₄ 一起形成杂环。
R₃ 和 R₄ 各为 H,或与 R₁ 和 R₂ 一起形成杂环。
A 是酮亚甲基残基。
X 代表羧基苯基或磺酰胺基苯基,或羧基或磺酰胺基取代基,该取代基被 附加到作为 A 一部分的芳基环上。