ES201544A1 - A procedure for the preparation of O-oxi-o'-carboxi-azocolorantes (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of O-oxi-o'-carboxi-azocolorantes (Machine-translation by Google Translate, not legally binding)
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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Novartis AG
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JR Geigy AG
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Priority to ES0201544ApriorityCriticalpatent/ES201544A1/en
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Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for the preparation of O-oxy-o'-carboxy-azo dyes especially suitable for the dyeing of protein fibers or mixtures containing them characterized in that 2-amino-1-benzoic acid-4- or -5-acid amides are coupled sulphonic diazotides in which a hydrogen atom of the sulfamide group may be substituted by the oxyethyl group with 1-phenyl-3-methyl-5-pyrazolones which may contain in the phenyl radical the usual substituents in the azo dyes but no acid substituents which form salts after which the monosaccharides obtained according to known methods are optionally treated with means which yield chromium in such quantities that at least 1 chromium atom falls on two dye molecules. (Machine-translation by Google Translate, not legally binding)
ES0201544A1952-01-221952-01-22A procedure for the preparation of O-oxi-o'-carboxi-azocolorantes (Machine-translation by Google Translate, not legally binding)
ExpiredES201544A1
(en)