Cellulose Fiber-Reactive Disazo or Trisazo Dyes Having a Triazine Ring Substituted by A(b-Sulfatoethyl) Sulfonylanilino Group

This invention relates to novel reactive azo dyes.

Up to now, the dyeing of cellulose fiber was carried out with a reactive dye at pH 10 and over in the presence of an acid capturing agent such as sodium carbonate, potassium carbonate, sodium hydroxide and the like and an electrolyte such as sodium chloride, sodium sulfate and the like at a temperature of about 100.degree. C. and below.

However, since in recent years the demand for the mixed spinning of cellulose with other fibers, especially polyester fiber, is increasing, it is necessary to employ dyes and dyeing conditions suitable for cellulose and polyester fibers respectively, for dyeing of such cellulose/polyester mixed fiber (hereinafter merely referred to as c/p fiber). This is because the dye and dyeing conditions for polyester fiber are considerably different from those for cellulose fiber. That is, it is necessary to use a disperse dye for the dyeing of polyester fiber at a temperature of about 130.degree. C.

If the c/p fiber above is dyed in the same process at once, for example, the dyeing has to be carried out by using two different dyes and by means of a combination of a reactive dye and a disperse dye, but it has some problems. For example, in order to exhaust the cellulose fiber part fully with a reactive dye, the pH value has to be kept at 10 and over by the addition of an acid capturing agent. However, the presence of the acid capturing agent accelerates the decomposition of the disperse dye to give poor exhaustion of the polyester fiber part. On the other hand, a high temperature condition is required in order that the polyester fiber part is exhausted by a disperse dye. However, the hydrolysis of the disperse dye is accelerated under the high pH value stated above and the high temperature, and thus, exhaustion of the cellulose fiber becomes extremely inferior. Accordingly, the two-bath method, that is, one of cellulose or polyester fiber is dyed first and then the other is dyed by another bath, has been generally employed for dyeing of c/p fiber.

The object of this invention is to provide novel reactive azo dyes being able to dye cellulose fiber under the condition and pH value which are employed for dyeing of polyester fiber with a disperse dye.

That is, this invention relates to reactive azo dyes represented by the general formula (I) or (II): ##STR6## wherein M is a hydrogen atom or an alkali metal, R.sup.1 is a hydrogen atom, a chlorine atom, a lower alkyl group, a lower alkoxy group, a nitro group or a carboxyl group, R.sup.2 and R.sup.8 are a lower alkyl group, a lower alkoxy group or a sulfonic acid group, R.sup.3, R.sup.7 and R.sup.9 are a hydrogen atom, a lower alkyl group, a lower alkoxy group, an acetylamino group or a sulfonic acid group, R.sup.4 and R.sup.5 are a hydrogen atom, a methyl group, a methoxy group or a sulfonic acid group, R.sup.6 is a hydrogen atom, a lower alkyl group, a lower alkoxy group or a sulfonic acid group, Z.sup.1 is a chlorine atom, a fluorine atom, an aliphatic or aromatic amino residual group, a methoxy group or a phenoxy group, Z.sup.2 is the same one as Z.sup.1 when Z.sup.3 is ##STR7## Z.sup.2 is a chlorine atom or a fluorine atom when Z.sup.3 is an aliphatic amino residual group, an aromatic amino residual group except ##STR8## a methoxy group or a phenoxy group, Z.sup.3 is ##STR9## an aliphatic amino residual group, an aromatic amino residual group except ##STR10## a methoxy group or a phenoxy group, m is 1, 2 or 3, m' is 2 or 3, n is 0 or 1, the benzene rings A, B and C may be naphthalene rings.

In the reactive azo dyes of this invention represented by the general formula (I) or (II), a sodium and potassium can be employed as an alkali metal represented by M. As lower alkyl and alkoxy groups represented by R.sup.1, R.sup.2, R.sup.3, R.sup.6, R.sup.7, R.sup.8 and R.sup.9, alkyl and alkoxy groups having 1 to 4 carbon atoms can be illustrated. As aliphatic or aromatic amino residual groups represented by Z.sup.1, Z.sup.2 and Z.sup.3, an amino group, an alkylamino group having 1 to 4 carbon atoms, an ethanolamino group, a .beta.-cyanoethylamino group, a .beta.-sulfoethylamino group, a glycine residual group, an anilino group and an anilino group substituted with a sulfo group, a chlorine atom, a lower alkyl group, a lower alkoxy group, a nitro group and a carboxyl group can be illustrated.

The reactive azo dye represented by the general formula (I) stated above can be prepared by the following procedure: For example, the usual diazotization and coupling can be carried out with the compound represented by the general formulae (III) and (IV): ##STR11## to give the monoazo compound represented by the general formula (V). ##STR12##

On the other hand, the compounds represented by the general formulae (VI), (VII) and (VIII): ##STR13## can be condensed each other in an aqueous medium in any order to prepare the compound represented by the general formula (IX). ##STR14##

Then, the monoazo compound of the general formula (V) can be converted to the diazonium compound by the usual diazotization, and the diazonium compound is coupled with the compound represented by the formula (IX) to obtain the reactive azo dyes of the general formula (I) stated above.

The reactive trisazo dyes represented by the general formula (II) stated above involve two kinds of the compounds represented by the general formulae (II-1) and (II-2). ##STR15## wherein X is a chlorine atom or a fluorine atom, Y is an aliphatic amino residual group, an aromatic amino residual group except ##STR16## a methoxy group or a phenoxy group, and R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, M Z.sup.1, m' and n are the same meanings as defined hereinbefore.

The trisazo compound represented by the general formula (II-1) stated above can be prepared by the following procedure: For example, the usual diazotization and coupling can be carried out twice with the compounds represented by the general formulae (X), (XI) and (XII): ##STR17## to give the disazo compound represented by the general formula (XIII). ##STR18##

Then, the disazo compound of the general formula (XIII) stated above can be converted to the diazonium compound in water-acetic acid medium by diazotization, and then the diazonium compound obtained is coupled with the compound represented by the general formula (IX) stated above to obtain the trisazo compound of the general formula (II-1) stated above.

Also, the trisazo compound represented by the general formula (II-2) can be prepared by the following procedure: For example, the compounds represented by the following formulae (XIV), (XV) and (XVI): ##STR19## can be condensed each other in an aqueous medium in any order to prepare the compound represented by the general formula (XVII): ##STR20##

Then, the disazo compound of the general formula (XIII) stated above can be converted to the diazonium compound in water-acetic acid medium by diazotization, and the diazonium compound obtained can be coupled with the compound represented by the general formula (XVII) stated above to obtain the trisazo compound of the general formula (II-2) stated above.

As fibers which can be dyed with reactive azo dyes of this invention, cellulose fiber such as cotton, viscose rayon, cupra ammonium rayon and hemp, can be illustrated. Also, cellulose fiber in mixed cellulose fibers with polyester, triacetate, polyacrylonitrile, polyamido, wool, silk and the like can be excellently dyed.

In dyeing method for fibers using reactive azo dyes of this invention, dyeing can be carried out by adding a dyestuff which is needful for dyeing of fibers other than cellulose, e.g., a disperse dye and the like stated in Color Index (Third Edition), into the bath at the same time.

In case of dyeing of cellulose fibers with a reactive azo dye of this invention, for example, a bath can be prepared by adding a reactive azo dye represented by the general formula (I) or (II), a buffer which is required to keep the bath at pH 5 to 10 (for example, in general, about 0.5 to 5.0 g of an acid such as carbonic acid, phosphonic acid, citric acid and the like, a sodium salt or a potassium salt with these acid or a mixture thereof per liter), and if necessary, by adding an electrolyte (in general, about 1 to 150 g of sodium chloride, sodium sulfate and the like per liter), and a cellulose fiber is put in the bath, and then dyeing can be carried out by heating the bath for 30 to 50 minutes at temperature of 100.degree. to 150.degree. C.

When mixed fiber and knitted goods made by spinning or knitting cellulose fiber with other fibers, for example, polyester fiber, are dyed, the cellulose and polyester fibers can be dyed at the same time by adding a reactive azo dye represented by the general formula (I) or (II) and a disperse dye stated in Color Index into the bath above according to one-bath one-process method.

Furthermore, in the case of dyeing the mixed fiber and knitted goods above, the one-bath two-process method heretofore in use, that is, either fiber is dyed and then the other fiber is dyed, may be applied to dye cellulose and other fibers in each bath by combination of dyeing method using a reactive azo dye of this invention with dyeing method for other fibers other than cellulose.

The method of this invention is described in detail later by means of examples but is not limited to the examples.

10 g of unmercerized cotton knitted goods are put in a path at pH 7 which is prepared by adding 0.2 g of the reactive azo dye in free form represented by the following formula: ##STR21## 16 g of sodium sulfate, 0.4 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.1 g of KH.sub.2 PO.sub.4 into 200 ml of water, and the bath is heated to 120.degree. C. for 30 minutes. After dyeing for 60 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in clear red. The degree of exhaustion of the present dye is very excellent, and the color of dyed goods obtained is extreme density. Each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Further, the reactive azo dye used in the present example can be prepared by the following procedure: The monoazo compound represented by the following formula: ##STR22## can be prepared by the usual diazotization and coupling of 30.3 g of 2-naphthylamine-4,8-disulfonic acid with 17.3 g of 1-aminobenzene-2-sulfonic acid. On the other hand, after condensing of 23.9 g of 2-amino-5-hydroxynaphthalene-7-sulfonic acid with 18.5 g of cyanuric chloride at 5.degree. C. below, the compound obtained is further condensed with 28.1 g of sulfonic acid ester of 4-(.beta.-hydroxyethyl)sulfonylaniline at 30.degree. to 35.degree. C. to prepare the compound represented by the following formula: ##STR23## and then to this reaction solution, the diazo solution prepared from the monoazo compound stated above by the usual diazotization is added. After coupling, the reaction mixture is salted out with potassium chloride to obtain the reactive disazo dye stated above.

10 g of undyed silk cotton knitted goods are put in a bath which is prepared by adding 0.2 g of reactive azo dye in free form represented by the following formula: ##STR24## 16 g of sodium sulfate, 0.5 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.02 g of KH.sub.2 PO.sub.4 into 200 ml of water, the bath is heated to 130.degree. C. for 30 minutes. After dyeing for 30 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in deep blue. The pH of the bath is maintained at 8 from the beginning to the end of dyeing. The color of the dyed goods is extreme density, and each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Further, the reactive azo dye used in the present example can be prepared by the following procedure: The monoazo compound represented by the following formula: ##STR25## can be prepared by the usual diazotization and coupling of 25.3 g of aniline-2,5-disulfonic acid with 13.7 g of 2-methoxy-5-methylaniline. On the other hand, after condensing of 23.9 g of 2-amino-5-hydroxynaphthalene-7-sulfonic acid with 18.5 g of cyanuric chloride at 5.degree. C. below, the compound obtained is further condensed with 28.1 g of sulfonic acid ester of 3-(.beta.-hydroxyethyl)sulfonylaniline at 30.degree. to 35.degree. C. to prepare the compound represented by the following formula: ##STR26## and then to this reaction solution, the diazo solution prepared from the monoazo compound stated above by the usual diazotization is added. After coupling, the reaction mixture is dried with spray to give the reactive disazo dye used in the present example.

10 g of mixed fiber of polyester with cotton (50:50) are put in a bath which is prepared by adding 0.2 g of the reactive dye in free form represented by the following formula: ##STR27## 0.2 g of the monoazo dye represented by the following formula: ##STR28## 12 g of sodium sulfate, 0.4 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.1 g of KH.sub.2 PO.sub.4 into 200 ml of water, the bath is heated to 130.degree. C. for 30 minutes. After dyeing for 60 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in blue having a fine color equality. The pH of the bath is maintained at 8 from the beginning to the end of dyeing. Their exhaustibility is very fine, and the color of the dyed goods is extreme density. Each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Still more, the reactive disazo dye used in the present example can be prepared by the following procedure: The monoazo compound represented by the following formula: ##STR29## can be prepared by the usual diazotization and coupling of 38.3 g of 2-naphthylamine-3,6,8-trisulfonic acid with 13.7 g of 2-methoxy-5-methylaniline. On the other hand, after condensing of 31.9 g of 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid with 18.5 g of cyanuric chloride at 5.degree. C. below, the compound obtained is further condensed with 28.1 g of sulfonic acid ester of 3-(.beta.-hydroxyethyl)sulfonylaniline to prepare the compound represented by the following formula: ##STR30## and then to this reaction solution, diazo solution prepared from the monoazo compound stated above by the usual diazotization is added. After coupling, the reaction mixture is salted out with potassium chloride to obtain the reactive dye stated above.

By a similar method to Example 1 cottons are dyed with reactive disazo dyes represented by the general formula (I), and results obtained are shown in Table 1. ##STR31## [I] No. ##STR32## ##STR33## ##STR34## Z.sup.1 ##STR35## color of cotton (water).lambda.max (nm) 4-1 ##STR36## ##STR37## ##STR38## Cl ##STR39## violet 564 4-2 ##STR40## ##STR41## ##STR42## Cl ##STR43## reddish blue 575 4-3 ##STR44## ##STR45## ##STR46## ##STR47## ##STR48## reddish violet 535 4-4 ##STR49## ##STR50## ##STR51## Cl ##STR52## blue 590 4-5 ##STR53## ##STR54## ##STR55## F ##STR56## violet 560 4-6 ##STR57## ##STR58## ##STR59## NH.sub.2 ##STR60## violet 552 4-7 ##STR61## ##STR62## ##STR63## NHCH.sub.2 CH.sub.2 SO.sub.3 H ##STR64## bluish red 523 4-8 ##STR65## ##STR66## ##STR67## NHCH.sub.2 COOH ##STR68## red 520 4-9 ##STR69## ##STR70## ##STR71## NH.sub.2 ##STR72## violet 561 4-10 ##STR73## ##STR74## ##STR75## Cl ##STR76## violet 561 4-11 ##STR77## ##STR78## ##STR79## OCH.sub.3 ##STR80## blue 590 4-12 ##STR81## ##STR82## ##STR83## ##STR84## ##STR85## violet 563 4-13 ##STR86## ##STR87## ##STR88## F ##STR89## bluish red 526 4-14 ##STR90## ##STR91## ##STR92## Cl ##STR93## blue 578 4-15 ##STR94## ##STR95## ##STR96## NHC.sub.2 H.sub.4 OH ##STR97## bluish red 525 4-16 ##STR98## ##STR99## ##STR100## NHC.sub.2 H.sub.4 CH ##STR101## violet 565 4-17 ##STR102## ##STR103## ##STR104## ##STR105## ##STR106## bluish red 524 4-18 ##STR107## ##STR108## ##STR109## ##STR110## ##STR111## bluish red 534 4-19 ##STR112## ##STR113## ##STR114## ##STR115## ##STR116## blue 585 4-20 ##STR117## ##STR118## ##STR119## ##STR120## ##STR121## violet 560 4-21 ##STR122## ##STR123## ##STR124## ##STR125## ##STR126## blue 588 4-22 ##STR127## ##STR128## ##STR129## ##STR130## ##STR131## violet 560 4-23 ##STR132## ##STR133## ##STR134## ##STR135## ##STR136## bluish red 525 4-24 ##STR137## ##STR138## ##STR139## Cl ##STR140## blue 575

10 g of undyed silk cotton knitted goods are put in a bath which is prepared by adding 0.2 g of the reactive trisazo dye in free form represented by the following formula: ##STR141## 16 g of sodium sulfate, 0.4 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.1 g of KH.sub.2 PO.sub.4 into 200 ml of water, the bath is heated to 120.degree. C. for 30 minutes. After dyeing for 60 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in greenish deep blue. The degree of their exhaustion is very excellent, and the color of the dyed goods obtained is extreme density. Each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Further, the trisazo compound used in the present example can be prepared by the following procedure: The disazo compound represented by the following formula: ##STR142## can be prepared by the usual diazotization and coupling of 13.7 g of 2-methoxy-5-methylaniline with the monoazo compound prepared by the usual diazotization and coupling of 38.3 g of 2-naphthylamine-3,6,8-trisulfonic acid with 13.7 g of 2-methoxy-5-methylaniline. On the other hand, after condensing of 31.9 g of 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid with 18.5 g of cyanuric chloride at 5.degree. C. below, the compound obtained is further condensed with 28.1 g of sulfonic acid ester of 3-(.beta.-hydroxyethyl)sulfonylaniline at 30.degree. to 35.degree. C. to prepare the compound represented by the formula: ##STR143## and then to this reaction solution, the diazo solution prepared from the disazo compound stated above by diazotization in water-acetic acid medium is added. After coupling, the reaction mixture is salted out with potassium chloride to obtain the trisazo compound stated above.

10 g of undyed silk cotton knitted goods are put in a bath which is prepared by adding 0.2 g of the trisazo compound in free form represented by the following formula: ##STR144## 16 g of sodium sulfate, 0.5 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.02 g of KH.sub.2 PO.sub.4 into 200 ml of water, and the bath is heated to 130.degree. C. for 30 minutes. After dyeing for 30 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in deep blue. The pH of the bath is maintained at 8 from the beginning to the end of dyeing. The color of the dyed goods is extreme density and each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Further, the trisazo compound used in the present example can be prepared by the following procedure: The disazo compound represented by the following formula: ##STR145## can be prepared by the usual diazotization and coupling of 18.0 g of 2-methoxy-5-acetylaminoaniline with the monoazo compound prepared by the usual diazotization and coupling of 30.3 g of 2-naphthylamine-4,8-disulfonic acid and 22.3 g of 1-naphthylamine-7-sulfonic acid. On the other hand, after condensing of 23.9 g of 2-amino-5-hydroxynaphthalene-7-sulfonic acid with 18.4 g of cyanuric chloride, the compound obtained is further condensed with 28.1 g of sulfonic acid ester 3-(.beta.-hydroxyethyl)sulfonylaniline to prepare the compound represented by the following formula: ##STR146## and then after diazotization and coupling of this compound with the disazo compound prepared previously, the reaction mixture is dried with spray to obtain the trisazo compound used in the present example.

10 g of mixed fiber of polyester with cotton (50:50) are put in a bath which is prepared by adding 0.2 g of the trisazo dye in free form represented by the following formula: ##STR147## 0.2 g of the monoazo dye represented by the following formula: ##STR148## 12 g of sodium sulfate, 0.4 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.1 g of KH.sub.2 PO.sub.4 into 200 ml of water, the bath is heated to 130.degree. C. for 30 minutes. After dyeing for 60 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in deep blue having a fine color equality. The pH of the bath is maintained at 8 from the beginning to the end of dyeing. Their exhaustibility is very fine, the color of the dyed goods is extreme density. Each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Further, the trisazo compound used in the present example can be prepared by a similar manner to Example 6 except that 13.7 g of 2-methoxy-5-methylaniline is used in place of 18.0 g of 2-methoxy-5-acetylaminoaniline used in Example 6.

By a similar manner to Example 5 cottons are dyed with the trisazo compounds represented by the general formula (II-1), and the results obtained are shown in Table 2. ##STR149## (II-1) No. ##STR150## ##STR151## ##STR152## ##STR153## Z.sup.1 ##STR154## cottoncolor of (nm)(water) .lambda.max 8-1 ##STR155## ##STR156## ##STR157## ##STR158## Cl ##STR159## deep blue 566 8-2 ##STR160## ##STR161## ##STR162## ##STR163## Cl ##STR164## greenishdeep blue 594 8-3 ##STR165## ##STR166## ##STR167## ##STR168## Cl ##STR169## greenishdeep blue 586 8-4 ##STR170## ##STR171## ##STR172## ##STR173## NH.sub.2 ##STR174## greenishdeep blue 584 8-5 ##STR175## ##STR176## ##STR177## ##STR178## NHC.sub.2 H.sub.4 SO.sub.3 H ##STR179## deep blue 572 8-6 ##STR180## ##STR181## ##STR182## ##STR183## Cl ##STR184## reddishdeep blue 561 8-7 ##STR185## ##STR186## ##STR187## ##STR188## F ##STR189## greenishdeep blue 586 8-8 ##STR190## ##STR191## ##STR192## ##STR193## Cl ##STR194## reddishdeep blue 562 8-9 ##STR195## ##STR196## ##STR197## ##STR198## NHCH.sub.2 COOH ##STR199## green 595 8-10 ##STR200## ##STR201## ##STR202## ##STR203## ##STR204## ##STR205## deep blue 565 8-11 ##STR206## ##STR207## ##STR208## ##STR209## Cl ##STR210## deep blue 564 8-12 ##STR211## ##STR212## ##STR213## ##STR214## Cl ##STR215## green 602 8-13 ##STR216## ##STR217## ##STR218## ##STR219## ##STR220## ##STR221## deep blue 563 8-14 ##STR222## ##STR223## ##STR224## ##STR225## NHC.sub.2 H.sub.4 OH ##STR226## green 601 8-15 ##STR227## ##STR228## ##STR229## ##STR230## Cl ##STR231## deep blue 570 8-16 ##STR232## ##STR233## ##STR234## ##STR235## Cl ##STR236## greenishdeep blue 588 8-17 ##STR237## ##STR238## ##STR239## ##STR240## Cl ##STR241## greenishdeep blue 588 8-18 ##STR242## ##STR243## ##STR244## ##STR245## Cl ##STR246## reddishdeep blue 560 8-19 ##STR247## ##STR248## ##STR249## ##STR250## Cl ##STR251## deep blue 568 8-20 ##STR252## ##STR253## ##STR254## ##STR255## Cl ##STR256## reddishdeep blue 566 8-21 ##STR257## ##STR258## ##STR259## ##STR260## Cl ##STR261## deep blue 576 8-22 ##STR262## ##STR263## ##STR264## ##STR265## Cl ##STR266## greenishdeep blue 582 8-23 ##STR267## ##STR268## ##STR269## ##STR270## Cl ##STR271## deep blue 564 8-24 ##STR272## ##STR273## ##STR274## ##STR275## Cl ##STR276## greenishdeep blue 578 8-25 ##STR277## ##STR278## ##STR279## ##STR280## Cl ##STR281## greenishdeep blue 580 8-26 ##STR282## ##STR283## ##STR284## ##STR285## Cl ##STR286## greenishdeep blue 585 8-27 ##STR287## ##STR288## ##STR289## ##STR290## NHC.sub.4 H.sub.9 (n) ##STR291## greenishdeep blue 586 8-28 ##STR292## ##STR293## ##STR294## ##STR295## ##STR296## ##STR297## deep blue 568 8-29 ##STR298## ##STR299## ##STR300## ##STR301## Cl ##STR302## deep blue 579 8-30 ##STR303## ##STR304## ##STR305## ##STR306## F ##STR307## deep blue 562 8-31 ##STR308## ##STR309## ##STR310## ##STR311## Cl ##STR312## deep blue 556 8-32 ##STR313## ##STR314## ##STR315## ##STR316## ##STR317## ##STR318## deep blue 552 8-33 ##STR319## ##STR320## ##STR321## ##STR322## Cl ##STR323## deep blue 562 8-34 ##STR324## ##STR325## ##STR326## ##STR327## Cl ##STR328## green 590 8-35 ##STR329## ##STR330## ##STR331## ##STR332## Cl ##STR333## deep blue 586 8-36 ##STR334## ##STR335## ##STR336## ##STR337## ##STR338## ##STR339## deep blue 560 8-37 ##STR340## ##STR341## ##STR342## ##STR343## Cl ##STR344## deep blue 576 8-38 ##STR345## ##STR346## ##STR347## ##STR348## NHC.sub.2 H.sub.4 CN ##STR349## green 593 8-39 ##STR350## ##STR351## ##STR352## ##STR353## F ##STR354## green 602 8-40 ##STR355## ##STR356## ##STR357## ##STR358## ##STR359## ##STR360## deep blue 567 8-41 ##STR361## ##STR362## ##STR363## ##STR364## Cl ##STR365## deep blue 562 8-42 ##STR366## ##STR367## ##STR368## ##STR369## ##STR370## ##STR371## reddishdeep blue 560 8-43 ##STR372## ##STR373## ##STR374## ##STR375## Cl ##STR376## deep blue 590 8-44 ##STR377## ##STR378## ##STR379## ##STR380## Cl ##STR381## reddishdeep blue 568 8-45 ##STR382## ##STR383## ##STR384## ##STR385## ##STR386## ##STR387## greenishdeep blue 595 8-46 ##STR388## ##STR389## ##STR390## ##STR391## NHC.sub.3 H.sub.7 (i) ##STR392## deep blue 585 8-47 ##STR393## ##STR394## ##STR395## ##STR396## Cl ##STR397## deep blue 563

10 g of undyed silk cotton knitted goods are put in a bath at pH 7 which is prepared by adding 0.2 g of the trisazo dye in free form represented by the following formula: ##STR398## 16 g of sodium sulfate, 0.4 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.1 g of KH.sub.2 PO.sub.4 into 200 ml of water, and the bath is heated to 120.degree. C. for 30 minutes. After dyeing for 60 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in greenish deep blue. Their exhaustibility is very fine, the color of the dyed goods is extreme density. Each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Further, the trisazo compound used in the present example can be prepared by the following procedure: The disazo compound represented by the following formula: ##STR399## can be prepared by the usual diazotization and coupling of 13.7 g of 2-methoxy-5-methylaniline with the monoazo compound prepared by the diazotization and coupling of 38.3 g of 2-naphthylamine-3,6,8-trisulfonic acid with 13.7 g of 2-methoxy-5-methylaniline. On the other hand, after condensing of 31.9 g of 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid with 13.5 g of cyanuric fluoride at 0.degree. C. below, the compound obtained is condensed with 17.3 g of 4-aminobenzenesulfonic acid at 20.degree. C. to prepare the compound represented by the following formula: ##STR400## and then to this reaction solution, the diazo solution prepared from the disazo compound stated above by the usual diazotization in water-acetic acid medium is added. After coupling, the reaction mixture is salted out with potassium chloride to obtain the trisazo compound stated above.

10 g of undyed silk cotton knitted goods are put in a bath which is prepared by adding 0.2 g of the trisazo compound in free form represented by the following formula: ##STR401## 16 g of sodium sulfate, 0.5 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.02 g of KH.sub.2 PO.sub.4 into 200 ml of water, the bath is heated to 130.degree. C. for 30 minutes. After dyeing for 30 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in deep blue. The pH of the bath is maintained at 8 from the beginning to the end of dyeing. The color of the dyed goods is extreme density. Each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Further, the trisazo compound used in the present example can be prepared by the following procedure: The disazo compound represented by the following formula: ##STR402## can be prepared by the usual diazotization and coupling of 18.0 g of 2-methoxy-5-acetylaminoaniline with the monoazo compound prepared by the usual diazotization and coupling of 25.3 g of aniline-2,5-disulfonic acid with 13.7 g of 2-methoxy-5-methylaniline. On the other hand, after condensing of 23.9 g of 2-amino-5-hydroxynaphthalene-7-sulfonic acid with 13.5 g of cyanuric fluoride, the compound obtained is further condensed with 17.3 g of 4-aminobenzenesulfonic acid to prepare the compound represented by the following formula: ##STR403## and then after diazotization and coupling of this compound with the disazo compound obtained previously, the reaction mixture is dried with spray to obtain the trisazo compound used in the present example.

10 g of mixed fiber of polyester with cotton (50:50) are put in a bath which is prepared by adding 0.2 g of the trisazo dye in free form represented by the following formula: ##STR404## 0.2 g of the monoazo dye represented by the following formula: ##STR405## 12 g of sodium sulfate, 0.4 g of Na.sub.2 HPO.sub.4.12H.sub.2 O as a buffer and 0.1 g of KH.sub.2 PO.sub.4 into 200 ml water, the bath is heated to 130.degree. C. for 30 minutes. After dyeing for 60 minutes at the same temperature, the goods dyed are washed with water, soaped, washed with water and dried to give the dyed goods in deep blue having a fine color equality. The pH of the bath is maintained at 8 from the beginning to the end of dyeing. Their exhaustibility is very excellent and the color of the dyed goods is extreme density. Each of their light fastness, fastness to chlorine and fastness to light perspiration is fine.

Further, the trisazo compound used in the present example can be prepared by a similar manner to Example 10 except that 22.3 g of 1-naphthylamine-7-sulfonic acid is used in place of 13.7 g of 2-methoxy-5-methylaniline used in Example 10.

By a similar manner to Example 9 cottons are dyed with the trisazo compounds represented by the general formula (II-2), and the results obtained are shown in Table 3. ##STR406## No. ##STR407## ##STR408## ##STR409## ##STR410## X Y cottoncolor of (nm)(water).lambda.max 12-1 ##STR411## ##STR412## ##STR413## ##STR414## Cl ##STR415## deep blue 571 12-2 ##STR416## ##STR417## ##STR418## ##STR419## Cl ##STR420## greenishdeep blue 604 12-3 ##STR421## ##STR422## ##STR423## ##STR424## Cl ##STR425## greenishdeep blue 591 12-4 ##STR426## ##STR427## ##STR428## ##STR429## F ##STR430## greenishdeep blue 594 12-5 ##STR431## ##STR432## ##STR433## ##STR434## F ##STR435## deep blue 582 12-6 ##STR436## ##STR437## ##STR438## ##STR439## Cl ##STR440## reddishdeep blue 566 12-7 ##STR441## ##STR442## ##STR443## ##STR444## F ##STR445## greenishdeep blue 596 12-8 ##STR446## ##STR447## ##STR448## ##STR449## Cl ##STR450## reddishdeep blue 567 12-9 ##STR451## ##STR452## ##STR453## ##STR454## F NH.sub.2 green 605 12-10 ##STR455## ##STR456## ##STR457## ##STR458## F NHC.sub.4 H.sub.9 (n) deep blue 575 12-11 ##STR459## ##STR460## ##STR461## ##STR462## Cl ##STR463## deep blue 569 12-12 ##STR464## ##STR465## ##STR466## ##STR467## Cl ##STR468## green 607 12-13 ##STR469## ##STR470## ##STR471## ##STR472## F ##STR473## deep blue 573 12-14 ##STR474## ##STR475## ##STR476## ##STR477## F NHCH.sub.2 COOH green 607 12-15 ##STR478## ##STR479## ##STR480## ##STR481## F ##STR482## deep blue 580 12-16 ##STR483## ##STR484## ##STR485## ##STR486## Cl ##STR487## greenishdeep blue 593 12-17 ##STR488## ##STR489## ##STR490## ##STR491## Cl ##STR492## greenishdeep blue 592 12-18 ##STR493## ##STR494## ##STR495## ##STR496## F ##STR497## reddishdeep blue 570 12-19 ##STR498## ##STR499## ##STR500## ##STR501## F ##STR502## deep blue 579 12-20 ##STR503## ##STR504## ##STR505## ##STR506## Cl NHCH.sub.2 CH.sub.2 SO.sub.3 H reddishdeep blue 571 12-21 ##STR507## ##STR508## ##STR509## ##STR510## Cl ##STR511## deep blue 580 12-22 ##STR512## ##STR513## ##STR514## ##STR515## Cl ##STR516## greenishdeep blue 586 12-23 ##STR517## ##STR518## ##STR519## ##STR520## F OCH.sub.3 deep blue 572 12-24 ##STR521## ##STR522## ##STR523## ##STR524## F ##STR525## greenishdeep blue 585 12-25 ##STR526## ##STR527## ##STR528## ##STR529## Cl ##STR530## greenishdeep blue 586 12-26 ##STR531## ##STR532## ##STR533## ##STR534## Cl ##STR535## greenishdeep blue 589 12-27 ##STR536## ##STR537## ##STR538## ##STR539## F ##STR540## greenishdeep blue 593 12-28 ##STR541## ##STR542## ##STR543## ##STR544## F ##STR545## deep blue 575 12-29 ##STR546## ##STR547## ##STR548## ##STR549## Cl ##STR550## deep blue 583 12-30 ##STR551## ##STR552## ##STR553## ##STR554## F NHC.sub.2 H.sub.4 OH deep blue 572 12-31 ##STR555## ##STR556## ##STR557## ##STR558## Cl NHC.sub.2 H.sub.4 CN deep blue 561 12-32 ##STR559## ##STR560## ##STR561## ##STR562## F ##STR563## deep blue 562 12-33 ##STR564## ##STR565## ##STR566## ##STR567## Cl OCH.sub.3 deep blue 571 12-34 ##STR568## ##STR569## ##STR570## ##STR571## Cl ##STR572## deep blue 593 12-35 ##STR573## ##STR574## ##STR575## ##STR576## F ##STR577## deep blue 589 12-36 ##STR578## ##STR579## ##STR580## ##STR581## F ##STR582## deep blue 568 12-37 ##STR583## ##STR584## ##STR585## ##STR586## Cl ##STR587## deep blue 581 12-38 ##STR588## ##STR589## ##STR590## ##STR591## F NHC.sub.2 H.sub.5 deep blue 598 12-39 ##STR592## ##STR593## ##STR594## ##STR595## F NH.sub.2 deep blue 612 12-40 ##STR596## ##STR597## ##STR598## ##STR599## F ##STR600## deep blue 575 12-41 ##STR601## ##STR602## ##STR603## ##STR604## Cl ##STR605## deep blue 567 12-42 ##STR606## ##STR607## ##STR608## ##STR609## F NHC.sub.2 H.sub.4 SO.sub.3 H reddishdeep blue 570

While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.