Di-p-toluenesulfonic acid salt of N-ethyl-N-methoxyethyl-3-methyl 1,4 benzenediamine
Abstract
Abstract The p-toluenesulfonic acid salts of certain p-phenylenediamine color developing agents have been found to possess extraordinarily and unexpectedly high solubility in aqueous alkaline solution. Thus, extremely concentrated solutions of these materials can be prepared to provide developer ''''concentrates'''' which are extremely economical to ship and working developer solutions which possess abnormally high developing agent concentrations and which are therefore capable of producing unusually high dye density levels in very short periods of time. Specifically preferred among these pphenylenediamine salts are the di-p-toluenesulfonic acid salts of 3-alkyl and 3-alkoxy N-alkyl-N-alkoxyalkyl-p-phenylenediamine developing agents.
Inventors
- 👤 Dietmar Schellenberg
- 👤 Richard L Bent
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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