The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 1983
Filed:
Feb. 08, 1982
Ciba-Geigy Corporation, Ardsley, NY (US);
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.