Thiopheneazo dyes with a coupling component based on M-phenylenediamine

Abstract

Thiopheneazo dyes of the formula ##STR1## where X is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,Y is halogen, hydroxyl, mercapto, substituted or unsubstituted C.sub.1 -C.sub.6 -alkoxy, C.sub.5 -C.sub.7 -cycloalkoxy, substituted or unsubstituted phenoxy, substituted or unsubstituted C.sub.1 -C.sub.6 -alkylthio, C.sub.5 -C.sub.7 -cycloalkylthio, substituted or unsubstituted phenylthio, C.sub.1 -C.sub.6 -alkylsulfonyl or substituted or unsubstituted phenylsulfonyl,Z is nitro, cyano, C.sub.1 -C.sub.4 -alkanoyl, benzoyl, C.sub.1 -C.sub.4 -alkylsulfonyl, phenylsulfonyl or a radical of the formula --CH.dbd.CB.sup.1 B.sup.2 or --CH.dbd.N--B.sup.3, in which B.sup.1 and B.sup.2 independently of the other are cyano, substituted or unsubstituted C.sub.1 -C.sub.6 -alkoxycarbonyl or C.sub.3 -C.sub.6 -alkenyloxycarbonyl or one of B.sup.1 and B.sup.2 is cyano and the other is C.sub.1 -C.sub.4 -alkylsulfonyl, substituted or unsubstituted phenyl, benzoyl, phenylsulfonyl or carbamoyl and B.sup.3 is hydroxyl, C.sub.1 -C.sub.4 -alkoxy, phenoxy or phenylamino,R.sup.1 is C.sub.1 -C.sub.4 -alkoxy,R.sup.2 is hydrogen, substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl or R.sup.3,R.sup.3 is a radical of the formula CH.sub.2 --CH(OR.sup.5)--CH.sub.2 R.sup.6 andR.sup.4 is substituted or unsubstituted C.sub.1 -C.sub.6 -alkanoylamino or substituted or unsubstituted benzoylamino,R.sup.5 being hydrogen, C.sub.1 -C.sub.10 -alkanoyl, C.sub.1 -C.sub.10 -alkoxycarbonyl or C.sub.1 -C.sub.10 -mono- or -dialkyl-carbamoyl, the alkyl groups of said substituents being uninterrupted or interrupted by oxygen atoms, andR.sup.6 being chlorine, bromine hydroxyl or substituted or unsubstitutedare useful for dyeing textile fibers.

Description

The present invention relates to novel thiopheneazo dyes of the formula I ##STR2## where

X is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,

Y is halogen, hydroxyl, mercapto, unsubstituted or phenyl-substituted C.sub.1 -C.sub.6 -alkoxy, C.sub.5 -C.sub.7 -cycloalkoxy, substituted or unsubstituted phenoxy unsubstituted or phenyl-substituted C.sub.1 -C.sub.6 -alkylthio, C.sub.5 -C.sub.7 -cycloalkylthio, substituted or unsubstituted phenylthio, C.sub.1 -C.sub.6 -alkylsulfonyl or substituted or unsubstituted phenylsulfonyl,

Z is nitro, cyano, C.sub.1 -C.sub.4 -alkanoyl benzoyl C.sub.1 -C.sub.4 -alkylsulfonyl, phenylsulfonyl or a radical of the formula --CH.dbd.CB.sup.1 B.sup.2 or --CH.dbd.N--B.sup.3, in which B.sup.1 and B.sup.2 are identical or different and each independently of the other are cyano, C.sub.1 -C.sub.6 -alkoxycarbonyl whose alkyl chain may be interrupted by one or more oxygen atoms, or C.sub.3 -C.sub.6 -alkenyloxycarbonyl or one of B.sup.1 and B.sup.2 is cyano and the other is C.sub.1 -C.sub.4 -alkylsulfonyl substituted or unsubstituted phenyl, benzoyl, phenylsulfonyl or carbamoyl and B.sup.3 is hydroxyl-, C.sub.1 -C.sub.4 -alkoxy, phenoxy or phenylamino,

R.sup.1 is C.sub.1 -C.sub.4 -alkoxy,

R.sup.2 is hydrogen, C.sub.1 -C.sub.10 -alkyl which may be interrupted by one or more oxygen atoms, or R.sup.3,

R.sup.3 is a radical of the formula CH.sub.2 --CH(OR.sup.5)--CH.sub.2 R.sup.6 and

R.sup.4 is unsubstituted or hydroxyl-, C.sub.1 -C.sub.4 -alkoxy-, phenoxy-, chlorine- or C.sub.1 -C.sub.4 -alkanoyloxy-substituted C.sub.1 -C.sub.6 -alkanoylamino or substituted or unsubstituted benzoylamino,

R.sup.5 being hydrogen, C.sub.1 -C.sub.10 -alkanoyl, C.sub.1 -C.sub.10 -alkoxycarbonyl or C.sub.1 -C.sub.10 -mono- or -dialkyl-carbamoyl, the alkyl groups of said substituents being uninterrupted or interrupted by one or more oxygen atoms, and

R.sup.6 being chlorine, bromine, hydroxyl, phenoxy, allyloxy, C.sub.1 -C.sub.10 -alkoxy which may be interrupted by one or more oxygen atoms or substituted by hydroxyl phenoxy, phenyl, C.sub.1 -C.sub.8 -alkanoyloxy, chlorine, bromine or cyano, C.sub.1 -C.sub.6 -alkanoyloxy, C.sub.1 -C.sub.6 -mono- or -dialkylaminocarbonyloxy or phenylaminocarbonyloxy.

EP-A-201,896, DE-A-3,529,831 and DE-A-3,535,133 already disclose thiopheneazo dyes of a similar structure.

It is an object of the present invention to make available new thiopheneazo dyes which have a coupling component based on m-phenylenediamine and which have advantageous application properties.

We have found that this object is achieved by the thiopheneazo dyes of the formula I specified at the beginning.

All the alkyl and alkenyl groups appearing in the abovementioned radicals can be not only straight-chain but also branched.

If substituted phenyl appears in the abovementioned formula I, suitable substituents are for example C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen, in particular chlorine or bromine.

Oxygen-interrupted alkyl in the abovementioned formula I is preferably interrupted by one or two oxygen atoms.

Z in the formula I is for example formyl, acetyl, propionyl, butyryl or isobutyryl.

X, B.sup.1 and B.sup.2 are for example methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, butoxycarbonyl or isobutoxycarbonyl.

B.sup.1 and B.sup.2 are each further for example pentyloxycarbonyl, isopentyloxycarbonyl, neopentyloxycarbonyl, hexyloxycarbonyl, 2-methoxyethoxycarbonyl, 2-ethoxyethoxycarbonyl, 2-butoxyethoxycarbonyl, allyloxycarbonyl, methallyloxycarbonyl, ethylallyloxycarbonyl, phenyl, 4-methylphenyl, 2-ethoxyphenyl, 4-chlorophenyl or 2,4-dichlorophenyl.

B.sup.1 and B.sup.2, like Y and Z, are each further for example methylsulfonyl, ethylsulfonyl, propylsulfonyl, isopropylsulfonyl or butylsulfonyl.

Y is further for example fluorine, chlorine, bromine, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, pentyloxy, isopentyloxy, neopentyloxy, tert-pentyloxy, hexyloxy, benzyloxy, 2-phenylethoxy, cyclopentyloxy, cyclohexyloxy, cycloheptyloxy, phenoxy, 4-methylphenoxy, 4-isopropylphenoxy, 4-methoxyphenoxy, 4-bromophenoxy, methylthio, ethylthio, isopropylthio, benzylthio, 2-phenylethylthio, cyclohexylthio, phenylthio, 4-chlorophenylthio, pentylsulfonyl, isopentylsulfonyl, hexylsulfonyl or 4-methylphenylsulfonyl.

R.sup.1 and B.sup.3 are each for example methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy or sec-butoxy.

R.sup.2 is for example methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, nonyl, decyl, 2-methoxy-ethyl, 2-ethoxyethyl, 2-propoxyethyl, 2-butoxyethyl, 2-methoxypropyl, 3-methoxypropyl, 3-ethoxypropyl, 2-methoxybutyl, 4-methoxybutyl, 2-ethoxybutyl, 4-ethoxybutyl, 3,6-dioxaheptyl or 3,6-dioxaoctyl.

R.sup.4 is for example NHCOCH.sub.3, NHCOC.sub.2 H.sub.5, NHCOC.sub.3 H.sub.7, NHCOCH.sub.2 OCH.sub.3, NHCOCH.sub.2 OC.sub.2 H.sub.5, NHCOCH.sub.2 OC.sub.6 H.sub.5, NHCOCH.sub.2 OH, NHCOCH.sub.2 OCOCH.sub.3, NHCOCH.sub.2 Cl, NHCOC.sub.2 H.sub.4 OCH.sub.3, NHCO.sub.6 H.sub.5, NHCOC.sub.6 H.sub.4 -4-OCH.sub.3, NHCOC.sub.6 H.sub.4 -4-CH.sub.3 or NHCOC.sub.6 H.sub.4 -4-Cl.

R.sup.5 is for example formyl, acetyl, propionyl, butyryl, isobutyryl, pentanoyl, isopentanoyl, hexanoyl, heptanoyl, octanoyl, 2-ethylhexanoyl, nonanoyl, decanoyl, 4-oxapentanol, 4-oxahexanoyl, 4,7-dioxaoctanoyl, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl, isopropoxycarbonyl, isobutoxycarbonyl, pentyloxycarbonyl, hexyloxycarbonyl, mono- or dimethylcarbamoyl, mono- or diethylcarbamoyl, mono- or dipropylcarbamoyl, mono- or diisopropylcarbamoyl or mono- or dibutylcarbamoyl.

R.sup.6 is not only as defined above but also for example methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy, 2-ethylhexyloxy, nonyloxy, decyloxy, 2-methoxyethoxy, 2-ethoxyethoxy, 2-propoxyethoxy, 2-butoxyethoxy, 2-methoxypropoxy, 3-methoxypropoxy, 3-ethoxypropoxy, 2-methoxybutoxy, 4-methoxybutoxy, 2-ethoxybutoxy, 4-ethoxybutoxy, 3,6-dioxaheptyloxy, 3,6-dioxaoctyloxy, 2-phenylethoxy, 8-phenyl-4,7-dioxaoctyloxy, 2-cyanoethoxy, 2-cyanopropoxy, 3-cyanopropoxy, 4-cyanobutoxy, 5-cyano-3-oxapentyloxy, 6-cyano-4-oxahexyloxy, 8-cyano-4-oxahexyloxy, 2-hydroxyethoxy, 2- or 3-hydroxypropoxy, 2,3-dihydroxypropoxy, 2-hydroxybutoxy, 4-hydroxybutoxy,5-hydroxy-3-oxapentyloxy, 6-hydroxy-4-oxahexyloxy, 8-hydroxy-4-oxaoctyloxy, 8-hydroxy-3,6-dioxaoctyloxy, 2-phenyl-2-hydroxethoxy, 2-chloroethoxy, 2-bromoethoxy, 2-phenoxyethoxy, 3-phenoxypropoxy, 4-phenoxybutoxy, 5-phenoxy-3-oxapentyloxy, 6-phenoxy-4-oxahexyloxy, 8-phenoxy-4-oxaoctyloxy,2-formyloxyethoxy, 2-acetyloxyethoxy, 2-propionyloxyethoxy, 2-butyryloxyethoxy, 2-(2-ethylhexanoyloxy)ethoxy, 2- or 3-acetyloxypropoxy, 2- or 3-propionyloxypropoxy, 2- or 3-(2-ethylhexanoyloxy)propoxy, 4-acetyloxybutoxy, 4-propionyloxybutoxy, 4-(2-ethylhexanoyloxy)butoxy, 5-acetyloxy-3-oxapentyloxy, 5-propionyloxy-3-oxapentyloxy, 5-(2-ethylhexanoyloxy)-3-oxapentyloxy, 6-acetyloxy-4-oxahexyloxy, 6-propionyloxy-4-oxahexyloxy, 6-(2-ethylhexanoyloxy)-4-oxahexyloxy, 8-acetyloxy-4-oxaoctyloxy, 8-propionyloxy-4-oxaoctyloxy, 8-(2-ethylhexanoyloxy)-4-oxaoctyloxy, formyloxy, acetyloxy, propionyloxy, butyryloxy, isobutyryloxy, pentanoyloxy, hexanoyloxy, mono- or dimethylcarbamoyloxy, mono- or diethylcarbamoyloxy, mono- or dipropylcarbamoyloxy, mono- or diisopropylcarbamoyloxy, mono- or dibutylcarbamoyloxy or N-methyl-N-ethylcarbamoyloxy.

Preference is given to thiopheneazo dyes of the formula I where

X is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,

Y is halogen, C.sub.1 -C.sub.4 -alkoxy, phenylthio or phenylsulfonyl,

Z is cyano, formyl or a radical of the formula --CH.dbd.CB.sup.1 B.sup.2, in which B.sup.1 is cyano and B.sup.2 is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,

R.sup.1 is C.sub.1 -C.sub.4 -alkoxy,

R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl,

R.sup.3 is a radical of the formula --CH.sub.2 --CH(OR.sup.5)--CH.sub.2 R.sup.6 and

R.sup.4 is C.sub.1 -C.sub.4 -alkanoylamino,

R.sup.5 being hydrogen or C.sub.1 -C.sub.4 -alkanoyl and

R.sup.6 being chlorine bromine hydroxy, phenoxy, allyloxy, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkanoyloxy.

Particular preference is given to thiopheneazo dyes of the formula I where

X is cyano,

Y is chlorine, bromine, methoxy, ethoxy, phenylthio or phenylsulfonyl,

Z is cyano or formyl,

R.sup.1 is methoxy or ethoxy,

R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl,

R.sup.3 is a radical of the formula --CH.sub.2 --CH(OR.sup.5)--CH.sub.2 R.sup.6 and

R.sup.4 is C.sub.1 -C.sub.4 -alkanoylamino,

R.sup.5 being hydrogen or C.sub.1 -C.sub.4 -alkanoyl and

R.sup.6 being chlorine, bromine, hydroxy, phenoxy, allyloxy, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkanoyloxy.

Suitable dyes are in particular those of the formula I where

X is cyano,

Y is chlorine or ethoxy,

Z is cyano or formyl,

R.sup.2 is hydrogen,

R.sup.4 is acetylamino and

R.sup.5 is hydrogen.

The thiopheneazo dyes of the formula I according to the present invention can be prepared in a conventional manner. For instance, an aminothiophene of the formula II ##STR3## where X, Y and Z are each as defined above, can be diazotized and coupled to an m-phenylenediamine derivative of the formula III ##STR4## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each as defined above.

The aminothiophenes II and m-phenylene derivatives III are in general known compounds (for example see EP-A-193,885 and also DE-A-3,004,654).

The novel thiopheneazo dyes are advantageously used as disperse dyes for dyeing textile fibers, in particular polyesters or cellulose esters, but also polyamides or blend fabrics of polyesters and cellulose fibers. They have not only a high color strength but also very good fastness properties.

The Examples which follow will illustrate the invention in more detail.

EXAMPLE 1

9.4 g of 2-amino-4-chloro-5-formyl-3-cyanothiophene were suspended at not more than 30.degree. C. in 60 ml of 85% strength by weight sulfuric acid. 16.6 g of nitrosylsulfuric acid (11.5% of N.sub.2 O.sub.3) were added dropwise at 0.degree.-5.degree. C. over 0.5 hours, and the mixture was stirred at that temperature for a further 2 hours.

The diazonium salt solution thus obtained was slowly run at 0.degree.-5.degree. C. into a mixture of 16 g of N-(2-hydroxy-4-oxaoctyl)-2-methoxy-5-acetylaminoaniline in 25 ml of N,N-dimethylformamide, 100 ml of water, 20 ml of dilute hydrochloric acid, 0.5 g of sulfamic acid and 300 g of ice. After the coupling had ended, the dye was filtered off with suction, washed neutral and dried. This gave 20.9 g of the dye of the formula ##STR5## which dyes polyester fibers in fast, greenish blue shades.

The same method was used to obtain the dyes of the formula ##STR6## listed in Table 1.

TABLE 1__________________________________________________________________________Ex.No. X Y Z R.sup.1 R.sup.2 R.sup.4 R.sup.5 R.sup.6 Hue on PES__________________________________________________________________________ 2 CN Cl CHO OCH.sub.3 H NHCOC.sub.2 H.sub.5 H OC.sub.2 H.sub.5 greenish blue 3 CN Cl CHO OC.sub.2 H.sub.5 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 greenish blue 4 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 H OCH.sub.3 greenish blue 5 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 H OC.sub.6 H.sub.5 greenish blue 6 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 H OH greenish blue 7 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 H OC.sub.2 H.sub.4 OC.sub.2 H.sub.5 greenish blue 8 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 H OCH.sub.3 greenish blue 9 CN Br CHO OCH.sub.3 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 greenish blue10 CN Cl CHO OC.sub.2 H.sub.5 H NHCOC.sub.2 H.sub.5 H OC.sub.4 H.sub.9 greenish blue11 CN Cl CHO OCH.sub.3 H NHCOC.sub.2 H.sub.5 H OC.sub.2 H.sub.4 OC.sub.2 H.sub.5 greenish blue12 CN Cl CHO OCH.sub.3 H NHCOCH.sub.2 OCH.sub.3 H OH greenish blue13 CN Cl CHO OCH.sub.3 H NHCOC.sub.6 H.sub.5 H OC.sub.4 H.sub.9 greenish blue14 CN Cl CHO OCH.sub.3 C.sub.2 H.sub.5 NHCOCH.sub.3 H OC.sub.4 H.sub.9 greenish blue15 CN Cl CHO OCH.sub.3 C.sub.4 H.sub.9 NHCOCH.sub.3 H OC.sub.2 H.sub.5 greenish blue16 CN Cl 1) OCH.sub.3 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 green17 CN Cl 2) OCH.sub.3 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 green18 3) Cl CHO OCH.sub.3 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 blue19 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 H Cl greenish blue__________________________________________________________________________ 1) CH = C(CN).sub.2 2) CH = C(CN)CO.sub.2 C.sub.4 H.sub.9 3) CO.sub.2 C.sub.2 H.sub. 5

EXAMPLE 20

9.18 g of 2-amino-4-chloro-3,5-dicyanothiophene were introduced into a mixture of 120 ml of 3:1 v/v of glacial acetic acid/propionic acid and 20 ml of 85% strength by weight of sulfuric acid. 17.3 g of nitrosylsulfuric acid (11.5% of N.sub.2 O.sub.3) were added dropwise at 0.degree.-5.degree. C., and the mixture was stirred at that temperature for 3 hours.

The diazonium salt solution was added dropwise at 0.degree.-5.degree. C. to a mixture of 16 g of N-(2-hydroxy-4-oxaoctyl)-2-methoxy-5-acetylaminoaniline in 50 ml of N,N-dimethylformamide, 100 ml of water, 20 ml of dilute hydrochloric acid, 0.5 g of sulfamic acid and 300 g of ice. After 2 hours at 0.degree.-5.degree. C., the mixture was worked up, and the dye was filtered off with suction, washed neutral and dried. This gave 16.6 g of the dye of the formula ##STR7## which dyes polyester in greenish blue shades which are fast to light and dry heat setting and pleating.

The same method was used to obtain the dyes of the formula ##STR8## listed in the following Table 2:

TABLE 2__________________________________________________________________________Ex.No. X Y Z R.sup.1 R.sup.2 R.sup.4 R.sup.5 R.sup.6 Hue on PES__________________________________________________________________________21 CN Cl CN OCH.sub.3 H NHCOC.sub.2 H.sub.5 H OC.sub.2 H.sub.5 greenish blue22 CN Cl CN OC.sub.2 H.sub.5 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 greenish blue23 CN Cl CN OCH.sub.3 H NHCOCH.sub.3 H OCH.sub.3 greenish blue24 CN Cl CN OCH.sub.3 H NHCOCH.sub.3 H OC.sub.6 H.sub.5 greenish blue25 CN Cl CN OCH.sub.3 H NHCOCH.sub.3 H OH greenish blue26 CN Cl CN OCH.sub.3 H NHCOCH.sub.3 H OC.sub.2 H.sub.4 OC.sub.2 H.sub.5 greenish blue27 CN Cl CN OCH.sub.3 H NHCOCH.sub.3 H OCH.sub.3 greenish blue28 CN Br CN OCH.sub.3 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 greenish blue29 CN Cl CN OC.sub.2 H.sub.5 H NHCOC.sub.2 H.sub. 5 H OC.sub.4 H.sub.9 greenish blue30 CN Cl CN OCH.sub.3 H NHCOC.sub.2 H.sub.5 H OC.sub.2 H.sub.4 OC.sub.2 H.sub.5 greenish blue31 CN Cl CN OCH.sub.3 H NHCOCH.sub.2 OCH.sub.3 H OH greenish blue32 CN Cl CN OCH.sub.3 H NHCOC.sub.6 H.sub.5 H OC.sub.4 H.sub.9 greenish blue33 CN Cl CN OCH.sub.3 C.sub.2 H.sub.5 NHCOCH.sub.3 H OC.sub.4 H.sub.9 greenish blue34 CN Cl CN OCH.sub.3 C.sub.4 H.sub.9 NHCOCH.sub.3 H OC.sub.2 H.sub.5 greenish blue35 CN Cl NO.sub.2 OCH.sub.3 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 green36 CN Cl NO.sub.2 OCH.sub.3 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 green37 1) Cl CN OCH.sub.3 H NHCOCH.sub.3 H OC.sub.4 H.sub.9 blue38 CN Cl CN OCH.sub.3 H NHCOCH.sub.3 H Cl greenish blue__________________________________________________________________________ 1) CO.sub.2 C.sub.2 H.sub.5

EXAMPLE 39

2.54 g of the dye described in Example 1 were admixed in 20 ml of N,N-dimethylformamide with 1.02 g of acetic anhydride and 0.30 g of dry sodium acetate, and the mixture was heated at 65.degree. C. for 2 hours.

After cooling down to 25.degree. C., the mixture was poured onto 200 ml of ice-water and worked up.

This gave 2.2 g of the dye of the formula ##STR9## which dyes polyester in greenish shades having good all round fastness properties.

The same method was used to obtain the dyes of the formula ##STR10## listed in the following Table 3:

TABLE 3__________________________________________________________________________Ex.No. X Y Z R.sup.1 R.sup.2 R.sup.4 R.sup.5 R.sup.6 Hue on PES__________________________________________________________________________40 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 COC.sub.2 H.sub.5 OC.sub.4 H.sub.9 greenish blue41 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 COC.sub.4 H.sub.9 OC.sub.4 H.sub.9 greenish blue42 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 COC.sub.6 H.sub.13 OCH.sub.3 greenish blue43 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 CO.sub.2 C.sub.2 H.sub.5 OC.sub.2 H.sub.5 greenish blue44 CN Cl CHO OCH.sub.3 H NHCOCH.sub.2 H.sub.5 1) OC.sub.6 H.sub.5 greenish blue45 CN Cl CHO OCH.sub.3 H NHCOCH.sub.3 2) OC.sub.4 H.sub.9 greenish blue46 CN Cl CHO OC.sub.2 H.sub.5 H NHCOCH.sub.3 COC.sub.3 H.sub.7 OCH.sub.3 greenish blue47 CN Br CHO OCH.sub.3 H NHCOCH.sub.3 COCH.sub.3 OC.sub.2 H.sub. 5 greenish blue48 3) Cl CHO OCH.sub.3 H NHCOCH.sub.3 COCH.sub.3 OC.sub.4 H.sub.9 blue49 CN Cl CN OCH.sub.3 H NHCOCH.sub.3 COC.sub.2 H.sub.5 OCH.sub.3 greenish blue50 CN Cl CN OCH.sub.3 C.sub.2 H.sub.5 NHCOCH.sub.3 COC.sub.5 H.sub.11 OCH.sub.3 greenish__________________________________________________________________________ 1) COC.sub.2 H.sub.4 OCH.sub.3 2) CON(C.sub.2 H.sub.5).sub.2 3) CO.sub.2 Et

Claims

1. A thiopheneazo dye of formula I ##STR11## wherein X is cyano,

Y is halogen, hydroxyl, mercapto, unsubstituted or phenyl-substituted C.sub.1 -C.sub.6 -alkoxy, C.sub.5 -C.sub.7 -cycloalkoxy, substituted or unsubstituted phenoxy, unsubstituted or phenyl-substituted C.sub.1 -C.sub.6 -alkylthio, C.sub.5 -C.sub.7 -cycloalkylthio, phenylthio, chlorophenylthio, C.sub.1 -C.sub.6 -alkylsulfonyl, phenylsulfonyl or methylphenylsulfonyl, is nitro, cyano, C.sub.1 -C.sub.4 -alkanoyl, benzoyl, C.sub.1 -C.sub.4 -alkylsulfonyl, phenylsulfonyl or a radical of the formula --CH.dbd.CB.sup.1 B.sup.2 or --CH.dbd.N--B.sup.3, in which B.sup.1 and B.sup.2 are identical or different and each independently of the other is cyano, C.sub.1 -C.sub.6 -alkoxycarbonyl whose alkyl chain may be interrupted by one or two oxygen atoms, or C.sub.3 -C.sub.6 -alkenyloxycarbonyl or one of B.sup.1 and B.sup.2 is cyano and the other is C.sub.1 -C.sub.4 -alkylsulfonyl, substituted or unsubstituted phenyl, benzoyl, phenylsulfonyl or carbamoyl and B.sup.3 is hydroxyl, C.sub.1 -C.sub.4 -alkoxy, phenoxy or phenylamino

R.sup.1 is C.sub.1 -C.sub.4 -alkoxy,

R.sup.2 is hydrogen, C.sub.1 -C.sub.10 -alkyl which may be interrupted by one or two oxygen atoms, or R.sup.3,

R.sup.3 is radical of the formula CH.sub.2 --CH(OR.sup.5)--CH.sub.2 R.sup.6 and

R.sup.4 is unsubstituted or hydroxyl-, C.sub.1 -C.sub.4 -alkoxy-, phenoxy-, chlorine- or C.sub.1 -C.sub.4 -alkanoyloxy-substituted C.sub.1 -C.sub.6 -alkanoylamino, benzoylamino, or benzoylamino substituted by methoxy, methyl or chloro,

R.sup.5 is hydrogen, C.sub.1 -C.sub.10 -alkanoyl, C.sub.1 -C.sub.10 -alkoxycarbonyl or C.sub.1 -C.sub.10 -mono- or dialkyl-carbamoyl, the alkyl groups of said substituents being uninterrupted or interrupted by one or two oxygen atoms, and

R.sup.6 is chlorine, bromine, hydroxyl, phenoxy, allyloxy, C.sub.1 -C.sub.10 -alkoxy which may be interrupted by one or two oxygen atoms or substituted by hydroxyl, phenoxy, phenyl, C.sub.1 -C.sub.8 -alkanoyloxy, chlorine, bromine or cyano, C.sub.1 -C.sub.6 -alkanoyloxy, C.sub.1 -C.sub.6 -mono- or -dialkyl- aminocarbonyloxy or phenylaminocarbonyloxy and the substituents on substituted phenyl are independently selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen, and the substituents on substituted phenoxy are methyl, isopropyl, methoxy or bromo.

2. A thiopheneazo dye as claimed in claim 1, wherein

X is cyano,

Y is halogen, C.sub.1 -C.sub.4 -alkoxy, phenylthio or phenylsulfonyl,

Z is cyano, formyl or a radical of the formula --CH.dbd.CB.sup.1 B.sup.2, in which B.sup.1 is cyano and B.sup.2 is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,

R.sup.1 is C.sub.1 -C.sub.4 -alkoxy,

R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl,

R.sup.3 is a radical of the formula --CH.sub.2 --CH(OR.sup.5)--CH.sub.2 R.sup.6 and

R.sup.4 is C.sub.1 -C.sub.4 -alkanoylamino,

R.sup.5 is hydrogen or C.sub.1 -C.sub.4 -alkanoyl and

R.sup.6 is chlorine, bromine, hydroxy, phenoxy, allyloxy, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkanoyloxy.