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
Original Assignee
Ciba Geigy AG
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Filing date
Publication date
Application filed by Ciba Geigy AGfiledCriticalCiba Geigy AG
Priority to ES0235622ApriorityCriticalpatent/ES235622A1/en
Publication of ES235622A1publicationCriticalpatent/ES235622A1/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Plural Heterocyclic Compounds
(AREA)
Abstract
Process for the preparation of new direct azo dyes characterized in that it is bound by compounds of formula ** (See formula) ** wherein m means a whole number by value of at most 2, aminomonoazo dyes of the formula R1-NN-R2-NH2 where R1 represents a radical containing sulfonic acid groups, linked at position 4 'to the azo group, of a 2-phenyl- (1 ') -benzothiazole, and R2 a benzene radical linked in position 4 to the group H2N and in position 1 to the azo group containing in position 2 an acylamino group, so that disazo-dyes are formed. (Machine-translation by Google Translate, not legally binding)
ES0235622A1957-05-221957-05-22Procedure for the preparation of new direct azocolorants (Machine-translation by Google Translate, not legally binding)
ExpiredES235622A1
(en)