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CRHOMIFEROUS DYESTUFFS THEIR PREPARATION AND THEIR APPLICATIONS RO THE DYEING OR BULK COLOURATION OF THE SYNTHETIC POLYAMIDES
CRHOMIFEROUS DYESTUFFS THEIR PREPARATION AND THEIR APPLICATIONS RO THE DYEING OR BULK COLOURATION OF THE SYNTHETIC POLYAMIDES
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机译：色母粒的制备及其在合成聚酰胺的染色或本体着色中的应用
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摘要
To prepare chromiferous complex dyes corresponding, in acidic form, to the formula (I) IMAGE with A, X1, X2 and X3 as in Claim 1, the 1/1 chromium complex of an o,o'-dihydroxymonoazo compound of formula (II HO-A-N=N-B-OH (II is reacted in alkaline medium with an equivalent or slightly lower molar proportion of an o-carboxy-o'-aminomonoazo compound of formula (III) IMAGE The complex can be neutralised with salts of alkali or alkaline-earth metals or protonated ethanolamines. The optional substitutent(s) of the radical A are chlorine or bromine and alkyl, alkoxy, acylamino, sulpho, nitro or sulphamoyl groups optionally substituted by one or two alkyl groups on the nitrogen, the substitutent(s) of the radical B are chlorine or bromine atoms and/or sulpho or hydroxyl groups.
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