Photographic element containing a 4-hydroxyalkyl-substituted 1-phenyl-3-pyrazolidinone electron transfer agent
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0134695A1
公开(公告)日:1985-03-20
Photographic elements, film units, processes and alkaline processing compositions are described wherein certain 4-hydroxyalkyl-substituted 1-phenyl-3-pyrazolidinones are employed as electron transfer agents in color image transfer materials. The silver halide electron transfer agents of precursors thereof have the formula:
wherein:
n is 1 or 2,
R' represents an unsubstituted alkyl group of 1 to 6 carbon atoms, an unsubstituted or substituted aryl group of 6 to 10 carbon atoms, or an aralkyl group of 6 to 10 carbon atoms,
R2 and R3 each independently represents hydrogen, an unsubstituted or substituted alkyl group of 1 to 6 carbon atoms, an unsubstituted or substituted aryl group of 6 to 10 carbon atoms, or an aralkyl group of 6 to 10 carbon atoms,
R4 represents hydrogen or one or more alkyl or alkoxy groups having from 1 to 4 carbon atoms, methylenedioxy groups or ethylenedioxy groups, and
R5 represents hydrogen or a hydrolyzable moiety.
描述了摄影元件、胶片单元、工艺和碱性处理组合物,其中某些 4-羟基烷基取代的 1-苯基-3-吡唑烷酮被用作彩色图像转移材料中的电子转移剂。卤化银电子转移剂及其前体具有以下式子:
其中
n 是 1 或 2、
R' 代表 1 至 6 个碳原子的未取代烷基、6 至 10 个碳原子的未取代或取代芳基或 6 至 10 个碳原子的芳烷基、
R2 和 R3 各自独立地代表氢、1 至 6 个碳原子的未取代或取代的烷基、6 至 10 个碳原子的未取代或取代的芳基或 6 至 10 个碳原子的芳烷基、
R4 代表氢或一个或多个具有 1 至 4 个碳原子的烷基或烷氧基、亚甲基二氧基或亚乙基二氧基,以及
R5 代表氢或可水解基团。