Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
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Filing date
Publication date
Priority claimed from CH1552269Aexternal-prioritypatent/CH543568A/en
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES384545A1publicationCriticalpatent/ES384545A1/en
Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography
(AREA)
Abstract
Process for the preparation of azo dyes free of acid water-solubilizing groups characterized by copying amines of the formula ** (see formula) ** In which A is a para-phenylene radical, optionally substituted; X is a hydroxylic group, optionally esterified or etherified; Y R and r1 are each a hydrocarbon radical, optionally substituted and which is eventually interrupted by heteroatoms, and R1 can also be a hydrogen atom, with a diazonic component of a diazoable amine of the formula dnh2. (Machine-translation by Google Translate, not legally binding)
ES384545A1969-10-161970-10-15Procedure for the preparation of azoic colors (Machine-translation by Google Translate, not legally binding)
ExpiredES384545A1
(en)
Procedure for the preparation of azoic colors without metal and of difficult solubility in water (Machine-translation by Google Translate, not legally binding)