Back to results
US RE47,618 E1Granted
Acid dye mixture
AssigneeDyStar Colours Distribution GmbH
InventorsThomas Ruchser, Andreas Giehl
Life of this patent
Estimating the term…
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.
Claims24
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.
3 more elements
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.
2 more elements
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.
3 more elements
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)
- 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.
3 more elements
Dependencies are inferred from the claim text.