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US 6,143,039 AGranted
Blue dye mixtures of fiber-reactive copper complex formazan dyes
AssigneeDyStar Textilfarben GmbH & Co.
InventorsRon Pedemonte, Werner Russ
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Abstract
The present invention provides a dye mixture comprising one or more copper complex formazan dyes conforming to the formula (1) ##STR1## and one or more copper complex formazan dyes conforming to the formula (2) ##STR2## wherein R1, R2, Y1, Y2 and M are defined as given in claim 1, methods for preparing said dye mixtures and methods for dyeing and printing hydroxy- and/or carboxamido-containing materials using said dye mixtures.
Claims6
Dye mixture comprising one or more copper complex formazan dyes conforming to the formula (1) ##STR9## wherein R.sub.1 denotes hydrogen;
- Y.sub.1 denotes vinyl or ethyl which is substituted in the .beta.-position by a substituent can be eliminated by the action of an alkali, forming the vinyl group;
- and
- M denotes hydrogen or an alkali metal;
- and one or more copper complex formazan dyes conforming to the formula (2) ##STR10## wherein R.sub.2 denotes hydrogen;
- Y.sub.2 denotes vinyl or ethyl which is substituted in the .beta.-position by a substituent which can be eliminated by the action of an alkali, forming the vinyl group;
- and
- M denotes hydrogen or an alkali metal.
4 more elements
Dependencies are inferred from the claim text.