Patent ID: 6548235
Filing Date: 2003-04-15
Classification: G03C

Abstract:
A stabilized solution of an alkali metal or alkaline earth metal salt of a p-phenylenediamine color developer comprising:a. from about 10 to 40 weight percent of an alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methane sulfonylaminoethyl)-2-methyl-p-phenylenediainine; b. from about 30 to 70 weight percent of at least one photographically inactive water-miscible or water-soluble hydroxy-containing, organic solvent of the alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methane sulfonylaminoethyl)-2-methyl-p-phenylenediamine; c. from about 5 to 40 weight percent water; and d. from about 1 to 40 weight percent of a preservative for the alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methane sulfonylaminoethyl)-2-methyl-p-phenylenediamine and wherein the weight percentages are based on the total weight of the stabilized solution.