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AssigneeHoechst Aktiengesellschaft
InventorsDaniele Negri, Andreas Von Der Eltz, Werner Hubert Russ, Bengt-Thomas Grobel
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A solid or dissolved dye mixture of azo dyes having fiber-reactive groups of the vinyl sulfone series, yielding dyeings of blue color shade, comprising one or more copper formazane dyes of the general formula (1) shown and defined in claim 1, one or more disazo dyes of the general formula (2) shown and defined in claim 1, and one or two monoazo dyes of the general formula (3) shown and defined in claim 1, respectively in the description part of the patent application, which dye mixtures are suitable for dyeing hydroxy- and/or caroboxamido groups containing materials, in particular fiber materials, such as cellulose fibers, for example cotton, wool and synthetic polyamide fibers, also together with other suitable dyes in trichromatic dyeing.
A dye mixture containing one or more copper formazan dyes of the formula ( 1), one or more disazo dyes of the formula (2), and one or two monoazo dyes of the formula (3):
Dependencies are inferred from the claim text.