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.)
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Sandoz AG
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Sandoz AG
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Publication date
Application filed by Sandoz AGfiledCriticalSandoz AG
Application grantedgrantedCritical
Publication of FR1167704ApublicationCriticalpatent/FR1167704A/fr
C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
C09B43/00—Preparation of azo dyes from other azo compounds
C09B43/18—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group
C09B43/20—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters