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:EP0136010A2
公开(公告)日:1985-04-03
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 or precursors thereof have the following formula:
wherein:
n is 0, 1 or 2;
R1 and R2 each independently represents hydrogen, an unsubstituted or substituted alkyl group of 1 to 6 carbon atoms, an unsbustituted or substituted aryl group of 6 to 10 carbon atoms, or an aralkyl group of 6 to 10 carbon atoms, with the proviso that when n is 0, then either R' or R2, but not both, may be hydrogen;
R3 represents at least one alkyl or alkoxy group having from 1 to about 6 carbon atoms, methylenedioxy group or ethylenedioxy group, and
R4 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。卤化银电子转移剂或其前体具有下式:
其中
n 为 0、1 或 2;
R1 和 R2 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 个碳原子的未烷基或取代的芳基或 6 至 10 个碳原子的芳烷基,但当 n 为 0 时,R'或 R2 可为氢,但不可同时为氢;
R3 代表至少一个具有 1 至约 6 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
R4 代表氢或可水解基团。