发明名称 CONCENTRATED SOLUTION CONTAINING P-PHENYLENEDIAMINE DERIVATIVE
摘要 PROBLEM TO BE SOLVED: To provide a stable alkaline p-phenylenediamine derivative generally usable for preparing various color developer formulations. SOLUTION: The concentrated aqueous solution of the p-phenylenediamine derivative having >pH 12.5 (a), containing 0.4-1.1 mol/l p-phenylenediamine derivative (b), 0.05-2 mol/l antioxidant (c), at most 35 wt.% organic solvent (d) with respect to the entire solution and at most 50 mmol/l sulfate ions (e) and having a single phase (f) is suitable for use in the preparation of various color developer formulations.
申请公布号 JP2002023328(A) 申请公布日期 2002.01.23
申请号 JP20010144898 申请日期 2001.05.15
申请人 AGFA GEVAERT NV 发明人 TAPPE GUSTAV;KERNER WOLFGANG;SCHMID GERHARD
分类号 G03C7/407;C07C215/16;C07C309/13;G03C5/26;G03C7/413;(IPC1-7):G03C7/407 主分类号 G03C7/407
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