Process for trichromatic dyeing or printing

Details Process for trichromatic dyeing or printing Process for trichromatic dyeing or printing

1982-02-08

1983-09-06

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

Mixed dyes, noncomplexed

8643, 8676, 8680, 8683, 8917, 8924, C09B 100, C09B 2900

Patent

active

044027044

ABSTRACT:
The invention relates to a process for the trichromatic dyeing or printing of natural and synthetic polyamide materials with dye mixtures, in which process there is used the dye of the formula ##STR1## wherein R.sub.1 is methyl or ethyl, and R.sub.2 is cyclohexyl or phenyl, together with at least one dye of the formula ##STR2## wherein B.sub.1, B.sub.2 and E.sub.1 are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, and X is straight-chain or branched-chain C.sub.1 -C.sub.4 -alkyl, or straight-chain or branched-chain C.sub.2 -C.sub.4 -hydroxyalkyl, and a dye of the formula ##STR3## wherein one Y is hydrogen or methyl, and the other Y is C.sub.2 -C.sub.4 -alkanoylamino or C.sub.2 -C.sub.4 -hydroxyalkylsulfamoyl, or with a mixture of the dyes of the formulae ##STR4## where Y.sub.1 in the formula (4) is C.sub.2 -C.sub.4 -hydroxyalkylsulfamoyl, and Z is hydrogen or methyl, and Y.sub.2 in the formula (5) is C.sub.2 -C.sub.4 -alkanoylamino, Z in the formula (4) being hydrogen when Y.sub.2 in the formula (5) is the propionyl amino group in the m-position with respect to the NH group.
The process according to the invention is suitable for dyeing natural or synthetic polyamide materials from an aqueous liquor, or for printing with printing pastes; and it is particularly suitable for dyeing from short liquors.

REFERENCES:
patent: 3778453 (1973-12-01), Hindermann et al.
patent: 3932378 (1976-01-01), Fasciati
patent: 4312808 (1982-01-01), Lienhard et al.

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