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US 11,377,787 B2Granted
Basic dye mixtures for aramid fibres
AssigneeDyStar Colours Distribution GmbH
InventorsAdrian Murgatroyd, Manfred Hoppe, Clemens Grund, Brian Connolly, Thomas Stepanski
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Abstract
The present invention is directed to dye mixtures comprising structures of formula and their production and their use for dyeing textiles and in particular for dyeing aramid fibres.
Claims15
A dye mixture comprising at least one dye of formula (I-1)
- and at least one dye of the (IIa-1)
- at least one dye of formula (III-1)
- X is an anion,
- wherein the dyes of formula (I-1), (II-a) and (III-1) are present in the following amount:
- formula (I-1):
- 70 to 80 wt. %,
- formula (IIa-1):
- 10 to 15 wt. %, and
- formula (III-1):
- 10 to 15 wt, %,
- wherein the weight % is based of the total amount of dyes in the dye mixture.
8 more elements
A dye mixture comprising at least one dye of formula (I)
- at least one dye of the formula (IIc) which is selected from the group consisting of:
- and at least one dye of the formula (III)
- wherein independent from each other
- R1 is C1-C4-alkyl,
- R2 is (C1-C4)-alkyl, (C1-C4)-alkyl substituted by halogen, phenyl or benzyl substituted by (C1-C8)-alkyl,
- X−is an anion,
- R7 is hydrogen, (C1-C4)-alkyl or (C1-C4)-alkoxy,
- R8 is hydrogen or (C1-C4)-alkyl, and
- R9 is (C1-C4)-alkyl, (C1-C4)-alkoxy or —(CH2)m—OH,
- wherein in is 2 to 4.
7 more elements
A dye mixture consisting essentially of at least one dye of formula (I-2)
- wherein X− is an anion, and
- ii. at least one dye of the formula (IIc) which is selected from the group consisting of:
- wherein X− is an anion.
Dependencies are inferred from the claim text.