Acid dye mixture
AssigneeDyStar Colours Deutschland GmbH
InventorsThomas Ruchser, Andreas Giehl
Life of this patent
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Abstract
The present invention refers to a red-dyeing acid dye mixture comprising a dye of the formula (I) and at least one dye of the formula (II) a process for its manufacturing and a process for dyeing and printing of natural or synthetic polyamide fiber material in which it used.
Claims20
A dye mixture comprising a dye of the formula (I)
- wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal,
- and at least one dye of the formula (IIa) or (IIb)
- M is defined above,
- and at least one dye of the formula (IIIc), (IIId), (IIIe) or (IIIg)
- wherein
- M is defined above.
A dye mixture comprising a dye of the formula (I)
- wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal,
- and at least one dye of the formula (IIa) or (IIb)
- M is defined above,
- and at least one dye of the formula (IVb), (IVd), (IVe) or (IVf)
- wherein M is defined above.
The dye mixture as claimed in 11, which further comprises at least one dye selected from the group consisting of the dyes of formulae (IIIb) to (IIIh)
- wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal.
The dye mixture as claimed in 12, wherein a dye of the formula (IIIc), (IIId), (IIIe) or (IIIg).
A dye mixture consisting of a dye of the formula (I)
- wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal,
- and at least one dye of the formula (IIa) or (IIb)
- M is defined above,
- and only one dye selected from the group consisting of the dyes of formulae (IIIb) to (IIIh)
- and optionally at least one dye selected from the group consisting of the dyes of formulae (IVa) to (IVh)
- wherein M is defined above.
Dependencies are inferred from the claim text.