ES296520A1 - Procedure for the obtaining of azoic colorants of mixed chromium complex (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the obtaining of azoic colorants of mixed chromium complex (Machine-translation by Google Translate, not legally binding)
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Bayer AG
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Bayer AG
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"Process for the preparation of azo dyes of mixed chromium complexes" asymmetric of the general formula ** (See formula) ** where K means a cation, I the rest of a monoazo dye and II the rest of a monoazo dye other than I, of formula ** (See formula) ** where R represents a benzolic radical in which the COOH group is in the position or towards the azo bridge, R1 represents an alkyl radical and R2 an aromatic carbocyclic radical which in the two positions or to the carbon atom carried by the COHN group shows nonionic substituents, characterized in that the chromium complex compound 1: 1 of a monoazo dye (I) is reacted in approximately equimolar proportion with a monoazo dye of the formula (2), free of metal and other than I. (Machine-translation by Google Translate, not legally binding)
ES0296520A1963-02-191964-02-17Procedure for the obtaining of azoic colorants of mixed chromium complex (Machine-translation by Google Translate, not legally binding)
ExpiredES296520A1
(en)