| 摘要 |
<p>Concentrated and working strength photographic color developing compositions are stabilized with the inclusion of a sulfur compound as a preservative for a color developing agent. The preservative can be represented by one of the following Structures I, II, III, and IV: M1S-R-CH(NH2)-COOM2 M1S-R1-COOM2 R2-S-S-R2 R3HN-R4-SM1 wherein R is a divalent aliphatic linking group having at least 1 carbon atom in the chain, R1 is phenylene or an unsubstituted alkylene having 1 or 2 carbon atoms, R2 is a monovalent aliphatic group having at least 2 carbon atoms and comprising a -CH(NHR3)-COOM2 or -(C1-C3)alkylene-CH(NHR3)-COOM2 group, R3 is hydrogen, an alkyl group having 1 to 3 carbon atoms or phenyl, R4 is an alkylene group, a cyclohexylene group, or a phenylene group, and M1 and M2 are independently hydrogen, an alkali metal or ammonium ion or methyl group. These compositions can be used to process color photographic materials.</p> |
