Water-soluble disazo compounds and their new coupling components, process for their manufacture and use of the disazo compounds as dyestuffs

摘要

1. Water-soluble, symmetrical disazo compounds of the general formula (1) see diagramm : EP0076922,P19,F4 in which the formula moieties D, R, X, Y, Z, M and m, occurring twice, are in each case identical to each other and the groups Z are bonded to the benzene nuclei in each case in ortho- or in each case in para-position relative to the ethylenedioxy substituent, and the amino groups -NH- and the groups Z are bonded in the benzene nuclei in each case in meta-position relative to each other and D is the radical of an aromatic diazo component, X denotes a hydrogen atom or a fiber-reactive group which can also have the meaning of the formula member Z defined below, Y is a fluorine atom or a chlorine atom, Z denotes a group of the formula -SO2 -CH=CH2 or -SO2 -CH2 -CH2 -R' in which R' represents a radical which can be eliminated in an aqueous medium under alkaline conditions, or the hydroxy group, M is a hydrogen atom or an alkali metal or the equivalent of an alkaline earth metal, R denotes a hydrogen atom or an alkyl group of 1 to 4 C-atoms and m is the number 1 or 2.