Azofarbstoffe

摘要

1384056 Water soluble reactive monoazo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 25 April 1972 [29 April 1971] 12121/71 Addition to 1271226 Heading C4P New water-soluble reactive dyes of formula wherein A represents the residue of a diazo component of the benzene or naphthalene series, Z represents a hydrogen atom or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical, T1 represents a hydrogen atom, an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or a hydroxyl, cyano, -COR3, -COOR3 or -CONR3R4 group in which R3 and R4 each independently represents a hydrogen atom or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or the group -NR3R4 represents the radical of a 5 or 6 membered heterocyclic ring, T2 represents a hydrogen atom, an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or a cyano, -COR3, -COOR3 or -CONR3R4 group in which R3 and R4 have the meanings already stated, X represents =N-, Y represents chlorine or bromine, Q1 represents oxygen, sulphur or -NR-wherein R represents hydrogen or lower alkyl, Q2 represents oxygen, sulphur or a direct link, R2 represents an optionally substituted alkyl radical having from 2 to 18 carbon atoms or a cycloalkyl, aralkyl or aryl radical, R1 is a divalent hydrocarbon radical such that R1 and R2 together contain at least 8 carbon atoms, n is at least 1, the dyes being free from NO 2 groups, are prepared by condensing a halo-pyrimidine or -triazine with an appropriate aminoazo dye and a hydroxy-, mercapto- or amino-compound. The dyes are used to colour cellulose, or preferably natural and synthetic polyamide, fibres by the usual reactive dyeing processes in yellow shades.