2,7-diphenylazo-1-amino-8-hydroxynaphthalene disazo dyes containing two fiber-reactive groups
AssigneeCiba-Geigy Corporation
InventorsDieter Mausezahl, Peter Loew
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Abstract
The invention relates to a process for dyeing or printing natural or synthetic polyamide fibre materials which comprises dyeing or printing these fibre materials with reactive dyes of the formula ##STR1## where each M is a cation, R.sub.1 and R.sub.2 are independently of each other hydrogen or C.sub.1 -C.sub.4 alkyl, and X.sub.1 and X.sub.2 are independently of each other .alpha.,.beta.-dibromopropionyl, .alpha.-bromoacryloyl, chloroacetyl or a mono-, di- or trihalopyrimidinyl radical.
Claims5
A reactive dye of the formula ##STR63## where each M is a cation, R.sub. 1, and R.sub. 2are independently of each other hydrogen or C.sub. 1-C.sub. 4-alkyl and one of the radicals X.sub. 1 or X.sub. 2 is 2,4,5-trichloropyrimidin-6-yl or chloroacetyl and the other radical X.sub. 1 or X.sub. 2 is 2,4,5-trichloropyrimidin-6-yl, 2,4-difluoro-5-chloropyrimidin-6-yl, 2,3-dibromopropionyl, 2-bromoacryloyl or chloroacetyl.
Dependencies are inferred from the claim text.