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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CH327569Aexternal-prioritypatent/CH488781A/en
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES342581A1publicationCriticalpatent/ES342581A1/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Coloring
(AREA)
Cosmetics
(AREA)
Abstract
Process for the preparation of basic, water-soluble dyes, containing a heterocyclic radical, whose ring quaternary nitrogen atom is bonded on an oxygen bridge in an alkyl group of the dyes, characterized by being prepared by condensation, coupling or reaction with N-oxides of a heterocycle containing a ring nitrogen atom. (Machine-translation by Google Translate, not legally binding)
ES342581A1966-07-041967-07-03Procedure for the preparation of basic colorants. (Machine-translation by Google Translate, not legally binding)
ExpiredES342581A1
(en)