| 摘要 |
1299277 Dyeing wool and silk fibres CIBAGEIGY AG 6 March 1970 [10 March 1969] 10997/70 Heading D1B Wool and silk are dyed at 80 to 110‹C with a fibre-reactive mono or disazo dye capable of forming a chromium complex, in presence of a chromium releasing agent in an amount corresponding to at least one atom of chromium for 2 molecules of the dye and a levelling agent which is a polyglycol ether derivative of a mono- or diamine of which at least one nitrogen atom is substituted by a hydrocarbon radical of 16 to 22 carbon atoms, the dyestuff having (a) a metal complexing centre which is an azo group with a hydroxyl group ortho to one of the nitrogen atoms of the azo group and a hydroxyl amino or carboxyl group ortho to the other nitrogen atom of the azo group (b) at least one carboxyl sulphonic acid sulphamide, #-sulphatoethylsulphone or #-sulphatoethylsulphonamido group which does not complex (c) at least one fibre-reactive substituted amino group derived from an aliphatic monocarboxylic acid of 2 to 4 carbon atoms or from a 5 or 6 membered heterocyclic ring structure. The dye, chroming agent and a neutral extender may be finely ground together. The polyglycol ether compounds may be quaternised and/or esterified, preferred esterification agents be sulphuric acid and its derivatives. Reactive groups include chloroacetylamino, 2-bromoacryloylamino, and 2, 3 dibromopropionylamino groups.
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