发明公开
EP0056444A3 Photographic elements containing blocked photographic reagents and processes employing same 失效
含有阻塞摄影试剂的摄影元件及其使用过程

Photographic elements containing blocked photographic reagents and processes employing same
摘要:
lmidomethyl blocked photographic reagents are useful in photographic elements and processes. The blocked photographic reagents have the structure:
wherein
X represents the atoms to complete a 5- or 6- membered ring or ring system; R represents hydrogen, alkyl of 1 to 4 carbon atoms or aryl of 6 to 12 carbon atoms; and PR represents the residue of an organic photographic reagent containing a heteroatom through which it is joined to the imidomethyl blocking group.
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