Photographic element containing substituted 1-phenyl-3-pyrazolidinone electron transfer agent
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0009837A2
公开(公告)日:1980-04-16
A photographic element is provided which contains a substituted 1-phenyl-3-pyrazolidinone electron transfer agent. Such electron transfer agent has the following formula:
wherein:
R is hydrogen or a hydrolyzable moiety;
R1 is hydrogen or a hydroxy group;
R2, R3 and R4 each represent hydrogen, hydroxy, an alkyl group of 1 to 3 carbon atoms, an alkoxy group of 1 to 3 carbon atoms, a phenyl group, -NHSO2R5, -O(CH2)nOR6, -(CH2)nOR6, -O(CH2)nC6H5, -(CH2)nR7, or -O(CH2)nR7;
R5 is hydrogen or an alkyl group of 1 to 3 carbon atoms;
R6 is hydrogen or a methyl group;
R7 is NHSO2R5 or SO2NHR5; and
n is a positive integer of 1 to 2;
with the proviso that at least one of R2, R3 and R4 is a substituent other than hydrogen.
提供了一种含有取代的 1-苯基-3-吡唑烷酮电子转移剂的感光元件。这种电子转移剂具有下式:
其中
R 是氢或可水解基团;
R1 是氢或羟基
R2、R3和R4各自代表氢、羟基、1至3个碳原子的烷基、1至3个碳原子的烷氧基、苯基、-NHSO2R5、-O(CH2)nOR6、-(CH2)nOR6、-O(CH2)nC6H5、-(CH2)nR7或-O(CH2)nR7;
R5 是氢或 1 至 3 个碳原子的烷基;
R6 是氢或甲基
R7 是 NHSO2R5 或 SO2NHR5;以及
n 是 1 至 2 的正整数;
但 R2、R3 和 R4 中至少有一个是氢以外的取代基。