Dye mixture containing at least four diazo dyes having the same

Details Dye mixture containing at least four diazo dyes having the same Dye mixture containing at least four diazo dyes having the same

1996-02-20

1997-04-22

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

8639, 534655, 534765, 534768, 534773, C09B 6722, C09B 2942, C09B 31153, C09B 5612, D06P 118

Patent

active

056230605

DESCRIPTION:

BRIEF SUMMARY
This application is a 371 of PCT/EP94/02823 filed Aug. 25, 1994.


BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to a dye mixture containing at least four azo dyes having the same color with a diaminopyridine coupling component.
2. Description of the Background blending patterns. However, these prior art dyes still have application defects. In particular, a pronounced temperature dependence of the exhaustion characteristics of the dyes is noted as well as an inadequate degree of exhaustion.


SUMMARY OF THE INVENTION
overcomes the disadvantages of the prior art dyes, which mixture contains at least four azo dyes having the same color with a diaminopyridine coupling component.


DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
dyes having the same color with a diaminopyridine coupling component, each dye having the formula Ia and Ib.


DESCRIPTION

The present invention relates to novel dye mixtures comprising at least 4 dyes of the same color having the formulae Ia and Ib ##STR2## where D is the radical of a diazo component of the aminoanthraquinone, aniline, aminothiophene, aminothiazole, aminoisothiazole, aminothiadiazole or aminobenzisothiazole series, atoms in ether function, -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen, and
EP-A-548 715 and JP-A-32913/1993 disclose dye mixtures with similar blending partners.
However, it has been found that the prior art dyes still have application defects. These are in particular a pronounced temperature dependence of the exhaustion characteristics of the dyes and an inadequate degree of exhaustion.
It is an object of the present invention to provide novel dye mixtures which shall be free of the abovementioned defects.
We have found that this object is achieved by the dye mixtures more particularly described at the beginning.
Any alkyl or alkylene appearing in the dye components of the abovementioned dye mixtures can be not only straight-chain but also branched.
In substituted alkyl appearing in the dye components the number of substituents is generally 1 or 2.
In substituted phenyl appearing in the dye components the number of substituents, unless otherwise stated, is generally from 1 to 3, preferably 1 or 2.
Preference is given to dye mixtures of the invention where ##STR3## where Z.sup.1 is hydrogen, nitro, cyano, chlorine, bromine, C.sub.1 -C.sub.4 -alkoxycarbonyl, phenylsulfonyl, phenoxysulfonyl or C.sub.1 -C.sub.4 -dialkylsulfamyl, C.sub.1 -C.sub.4 -alkoxy-or chlorine-substituted phenylazo, -alkoxycarbonyl, phenylsulfonyl, phenoxysulfonyl or C.sub.1 -C.sub.4 -dialkylsulfamyl, phenylcarbamoyl, unsubstituted or C.sub.1 -C.sub.4 -alkyl-substituted phenylazo or a radical of the formula ##STR4## where A is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl, Z.sup.5 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, phenyl which may be methyl-, methoxy-, chlorine- or C.sub.1 -C.sub.4 -alkoxycarbonyl-substituted, chlorine, bromine, C.sub.1 -C.sub.4 -alkoxycarbonyl or Z.sup.4 and Z.sup.5 together are an unsubstituted or methoxy-, thiocyanato- or C.sub.1 -C.sub.4 -alkylsulfonyl-substituted benzo radical, phenoxy-substituted, phenyl which may be methyl-, methoxy- or chlorine-substituted, benzyl which may be methyl-, methoxy- or chlorine-substituted, thienyl or cyano, ethylthio,
When D is a radical of the formula IIa, preference is given to those dyes in which at least one of the radicals Z.sup.1, Z.sup.2 and Z.sup.3 is not hydrogen.
R.sup.1, R.sup.2, R.sup.3, R.sup.4, Z.sup.5 and Z.sup.7 are each for example methyl, ethyl, propyl, isopropyl, butyl, isobutyl or sec-butyl.
Z.sup.1, Z.sup.3, Z.sup.4, Z.sup.6, Z.sup.8 and A as well as Z.sup.5 are each for example methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, butoxycarbonyl, isobutoxycarbonyl or sec-butoxycarbonyl.
Z.sup.1 and Z.sup.3 may also be for example dimethylsulfamyl, diethylsulfamyl, dipropylsulfamyl, diisopropylsulfamyl or dibutylsulfamyl.
R.sup.3 may also be for example formyl, acetyl or propionyl.
R.sup.1, R.sup.2 and Z.sup.5 may each al

Affiliated with

Also associated with

Rating

Dye mixture containing at least four diazo dyes having the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dye mixture containing at least four diazo dyes having the same , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dye mixture containing at least four diazo dyes having the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-342658