申请人:Eastman Kodak Company
公开号:US05283165A1
公开(公告)日:1994-02-01
Pyrrolinone dyes, and photographic materials containing them, which dyes have the formula: ##STR1## wherein; E.sup.1 represents an electron withdrawing group; R.sup.1 represents an aryl group of 6 to 14 carbon atoms or an alkyl group of from 1 to 12 carbon atoms; R.sup.2 represents an alkyl or alkylthio group of 1 to 20 carbon atoms, or an alkenyl group of 2 to 20 carbon atoms, or an aryl, aralkyl, heterocyclic or cycloalkyl group any of which have 5 to 14 carbon atoms, or R2 represents a hydroxy, cyano, chloro, nitro or hydrogen; M.sup.+ is a cation; each L represents a methine group; m is 0, 1, 2, or 3; and D is a moiety in conjugation with the oxygen of the pyrollinone ring. The dyes are particularly useful as solid particle filter dye dispersions in photographic elements.
含有吡咯烷酮染料的摄影材料,这些染料具有以下公式:##STR1## 其中,E.sup.1代表一个电子提取基团;R.sup.1代表6至14个碳原子的芳基或1至12个碳原子的烷基;R.sup.2代表1至20个碳原子的烷基或烷基硫基,或2至20个碳原子的烯基,或含有5至14个碳原子的芳基、芳基烷基、杂环或环烷基中的任何一种,或R2代表羟基、氰基、氯基、硝基或氢原子;M.sup.+是一个阳离子;每个L代表一个甲烷基;m为0、1、2或3;D是与吡咯烷酮环氧原子共轭的基团。这些染料在摄影元素中作为固体颗粒过滤染料分散剂特别有用。