Navy and black dye mixtures: thiophene azo disperse dye and red, yellow or orange disperse dye
AssigneeBASF SE
InventorsErwin Hahn, Guenter Hansen, Karl-Heinz Etzbach, Helmut Reichelt, Ernst Schefczik, Helmut Degen, Reinhold Krallmann, Gerhard Wagenblast
Life of this patent
Estimating the term…
Abstract
Navy and black dye mixtures contain one or more thiophene-azo dyes of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, X and Y each have defined meanings, and one or more dyes F whose absorption maximum is at a wavelength of from 390 to 520 nm, the proportion of thiophene-azo dyes being from 60 to 99% by weight, based on the total weight of thiophene-azo dyes and dyes F in the mixture.
Claims4
A navy or black dye mixture containing one or more thiophene-azo dye of the formula ##STR23## where R.sup.1 is formyl, cyano or phenylsulfonyl,
- R.sup.2 is halogen, C.sub.1 -C.sub.8 -alkoxy, substituted or unsubstituted phenoxy, C.sub.1 -C.sub.6 -alkylthio, phenylthio, C.sub.1 -C.sub.4 -alkylsulfonyl or phenylsulfonyl,
- R.sup.3 is cyano, C.sub.1 -C.sub.6 -alkoxycarbonyl whose alkyl chain may be interrupted by one or more oxygen atoms, carbamoyl or C.sub.1 -C.sub.4 -mono- or dialkyl-carbamoyl,
- R.sup.4 and R.sup.5 are identical or different and each is independently of the other C.sub.1 -C.sub.4 -alkyl which may be substituted by hydroxyl, C.sub.1 -C.sub.4 -alkoxy, cyano, C.sub.1 -C.sub.4 -alkanoyloxy, C.sub.1 -C.sub.4 -alkoxycarbonyloxy or C.sub.1 -C.sub.4 -alkylaminocarbonyloxy,
- X is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, chlorine, bromine or the radical --NH--CO--R.sup.6 where R.sup.6 is C.sub.1 -C.sub.4 -alkyl, which may be substituted by C.sub.1 -C.sub.4 -alkoxy, phenoxy, cyano, hydroxyl, chlorine or C.sub.1 -C.sub.4 -alkanoyloxy, or is unsubstituted or C.sub.1 -C.sub.4 -alkoxy-substituted phenoxy, and
- Y is hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, and
- one or more dye F whose adsorption maximum is at a wavelength of from 390 to 520 nm, wherein the proportion of thiophene-azo dye is from 60 to 99% by weight and the proportion of dye F is from 1 to 40% by weight, based on the total weight of thiophene-azo dye and dye F in the mixture and wherein said dye F is a member of a class selected from the group consisting of monoazo dyes, disazo dyes, anthraquinone dyes, methine dyes, quinopthalones, naphtholactam dyes, coumarin dyes, and diphenylamine dyes.
Dependencies are inferred from the claim text.