Reactive disazo dyestuffs having a fluorocontaining reactive group and a sulphatoethylsulphone substituent

Abstract

Dyestuffs of the formula ##STR1## wherein B=CH.dbd.CH.sub.2 or CH.sub.2 CH.sub.2 OSO.sub.3 H,u and v=H or SO.sub.3 H, with u=v,R=Cl, Br, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, COOH, SO.sub.3 H, NHCOCH.sub.3, SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 Hn=0, 1 or 2 ##STR2## These dyestuffs are outstandingly suitable for the dyeing and printing of materials containing hydroxyl groups or amide groups, such as cellulose, wool and polyamide, and give dyeings with good wet and light fastness properties.

Description

The present invention relates to reactive disazo dyestuffs of the formula ##STR3## wherein B=CH.dbd.CH.sub.2 or CH.sub.2 CH.sub.2 Z, wherein Z=a group which can be eliminated,

u and v=H or SO.sub.3 H, with u.noteq.v, R=a substituent, n=0, 1 or 2 ##STR4## wherein the broken lines represent a possible fused naphthalene ring and the benzene or naphthalene ring D can be substituted, in which case, if ##STR5## n must represent 1 or 2, and wherein the benzene ring A can be further substituted.

The following are examples of groups Z which can be eliminated:

Cl, Br, OSO.sub.3 H, S.sub.2 O.sub.3 H, OPO.sub.3 H.sub.2 and ##STR6##

The following are examples of substituents R: Cl, Br, C.sub.1 -C.sub.4 -alkyl such as CH.sub.3 and C.sub.2 H.sub.5, C.sub.1 -C.sub.4 -alkoxy such as OCH.sub.3 and OC.sub.2 H.sub.5, COOH, SO.sub.3 H, acylamino such as NHCOCH.sub.3, and SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H.

The following may be mentioned as substituents of the benzene radical A: CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5, COOH and Cl.

The following may be mentioned by way of example as substituents of the benzene or naphthalene ring D: Cl, Br, C.sub.1 -C.sub.4 -alkyl such as CH.sub.3 and C.sub.2 H.sub.5, C.sub.1 -C.sub.4 -alkoxy such as OCH.sub.3 and OC.sub.2 H.sub.5, acylamino, especially C.sub.1 -C.sub.4 -alkylcarbonylamino, NHCOCH.sub.3, COOH, SO.sub.3 H and SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H.

Within the scope of formula (1), the following dyestuffs are preferred: ##STR7##

Those dyestuffs of the formula (1), (2) and (3) are also preferred in which B=CH.sub.2 CH.sub.2 OSO.sub.3 H ##STR8## u=H and v=SO.sub.3 H.

The invention also relates to a process for the preparation of the dyestuffs of the formula (1), which is characterized in that an amine of the formula

H.sub.2 N--E--SO.sub.2 B (4) is diazotized, coupled in an acid medium with an 8-amino-1-hydroxy-naphthalenesulphonic acid of the formula ##STR9## to give a compound of the formula ##STR10## and this monoazo dyestuff is coupled in a neutral medium with the diazonium compound prepared from an amine of the formula ##STR11## to give a dyestuff of the formula (1). The compounds of the formula (7) are obtained in a manner known per se by a condensation of diamines of the formula ##STR12## with a difluorotriazine compound of the formula ##STR13## with elimination of HF.

In the compounds of the formulae (4) to (9), A, B, R, E, u, v and n have the meaning given in formula (1).

The reaction conditions of the preparation correspond to the conditions customary in the field of acylation, diazotization and coupling. Thus, the preparation is preferably carried out in an aqueous medium.

The following may be mentioned by way of example as starting compounds for the preparation of the reactive dyestuffs of the formula (1):

(a) Coupling components of the formula (5)

1-amino-8-hydroxy-naphthalene-3,6-disulphonic acid (H acid) 1-amino-8-hydroxy-naphthalene-4,6-disulphonic acid (K acid)

(b) Diaminobenzene compounds of the formula (8)

1,3-diaminobenzene-4-sulphonic acid 1,4-diaminobenzene-2-sulphonic acid 1,4-diaminobenzene-2,5-disulfonic acid 1,3-diaminobenzene-4,6-disulphonic acid 1,3-diamino-4-methylbenzene-6-sulphonic acid 1,3-diamino-4-chlorobenzene-6-sulphonic acid 1,4-diamino-2-methoxybenzene-5-sulphonic acid 1,4-diamino-2-carboxybenzene-5-sulphonic acid 1,3-diamino-4-carboxybenzene-6-sulphonic acid

(c) Amines of the formula (4)

Aniline-4-.beta.-sulphatoethylsulphone, aniline-3-sulphatoethylsulphone, aniline-2-.beta.-sulphatoethylsulphone, aniline-4-.beta.-thiosulphatoethylsulphone, aniline-3-.beta.-thiosulphatoethylsulphone, aniline-2-.beta.-thiosulphatoethylsulphone, aniline-4-.beta.-phosphatoethylsulphone, 4-methoxyaniline-3-.beta.-sulphatoethylSulphone, 4-methoxyaniline-3-.beta.-vinylsulphone, 2,5-dimethoxy-aniline-4-.beta.-sulphatoethylsulphone, 2,5-dimethoxy-aniline-4-vinylsulphone, 2,5-dimethoxy-aniline-4-.beta.-sulphatoethylsulphone, 2-methoxy-5-methyl-aniline-4-.beta.-SulphatoethylSulphone, 2-methoxy-5-methylaniline-4-.beta.-vinylsulphone, 6-carboxy-aniline-3-.beta.-sulphatoethylsulphone, 6-carboxy-aniline-3-vinylsulphone, 2-sulphoaniline-4-.beta.-sulphatoethylsulphone, 2-sulphoaniline-4-vinylsulphone, 2,4-disulpho-aniline-5-vinylsulphone, 2-hydroxy-aniline-5-.beta.-sulphatoethylsulphone, 2-hydroxy-aniline-4-.beta.-sulphatoethylsulphone, 3-sulpho-2-hydroxy-aniline-5-.beta.-sulphatoethylsulphone, 2-naphthylamine-8-.beta.-sulphatoethylsulphone, 2-naphthylamine-6-.beta.-sulphatoethylsulphone, 1-sulpho-2-naphthylamine-6-.beta.-Sulphatoethylsulphone, 6-sulpho-2-naphthylamine-8-.beta.-sulphatoethylsulphone, 2-aminonaphthalene-6,8-di(.beta.-sulphatoethylsulphone), 2-bromo-1-aminobenzene-4-.beta.-sulphatoethylSulphone and 2,6-dichloro-1-aminobenzene-4-.beta.-sulphatoethylsulphone.

(d) Difluorotriazines of the formula (9) ##STR14## R.sub.1 to R.sub.3 representing the following atoms or atom groupings:

______________________________________R.sub.1 R.sup.2 R.sub.3______________________________________H H HCl H HCH.sub.3 H HOCH.sub.3 H HOC.sub.2 H.sub.5 H HCOOH H HNHCOCH.sub.3 H HH Cl HH SO.sub.3 H HH COOH HH NHCOCH.sub.3 HH OCH.sub.3 HCl H ClCl H CH.sub.3Cl CH.sub.3 HCH.sub.3 Cl H______________________________________

The reactive dyestuffs of the formula (1) can be isolated and processed to give dry dyeing products. The isolation is preferably effected by salting out and filtration at temperatures which are as low as possible. The dyestuffs which have been filtered off can be dried, optionally after the addition of a mixture of equal parts of monosodium phosphate and disodium phosphate; preferably, the drying is carried out at temperatures which are not unduly high, and under a reduced pressure. The dry products according to the invention can also be prepared directly, that is to say without intermediate isolation of the dyestuffs, by spray-drying of the total preparation mixture.

The reactive dyestuffs of the formula (1) are distinguished by a high reactivity, and they give dyeings having good wet and light fastness properties. It should be particularly emphasized that the dyestuffs show a good solubility and electrolyte solubility coupled with good exhaustion properties and high dyestuff fixing, and that the fractions which have not been fixed can easily be removed. The dyeings can be etched.

The novel dyestuffs of the formula (1) are suitable for the dyeing and printing of materials containing hydroxyl groups or amide groups, such as textile fibres, filaments and fabrics of wool, silk, synthetic polyamide fibres and polyurethane fibres, and for the wash-fast dyeing and printing of native and regenerated cellulose, the treatment of cellulose materials advantageously being carried out in the presence of acid-binding agents and optionally by the action of heat in accordance with the processes which have become known for reactive dyestuffs.

The formulae given are those of the corresponding free acids. The dyestuffs were in general isolated, and employed for dyeing, in the form of the alkali metal salts, in particular the Na salts.

The quantities by weight given in the examples relate to the free acid. The colour indicator numbers given in the examples relate to the Colour Index Hue Indication Chart (Indicator Numbers).

EXAMPLE 1

A mixture of 47.0 g of diazotized 2-fluoro-4-(2'-sulphur-4'-methylphenylamino)-6-(4"-sulpho-3"-aminophenylamino)-triazine in 800 ml of water is added at pH 6 to 7 and 10.degree.-15.degree. C. to 61.1 g of the dyestuff of the formula ##STR15## dissolved in 500 ml of water (prepared by acid coupling of diazotized 4-aminophenyl-.beta.-sulphatoethylsulphone with H acid). After the coupling reaction has ended, the product is salted out and isolated. After drying and grinding, the dyestuff of the formula ##STR16## is obtained as a dark powder which dissolves in water with a blue colour and dyes cotton in navy blue (28) to black hues.

The diazo component used in this example can be obtained as follows:

187 g of 1-amino-4-methylbenzene-2-sulphonic acid are dissolved in 4 l of ice water to give a neutral solution. 135 g of 2,4,6-trifluorotriazine are allowed to run in within 20 minutes, the pH being maintained between 6 and 7 by simultaneous addition of 15% sodium carbonate solution. The mixture is stirred at 0.degree. C. for 10 minutes and tested for complete acylation.

If necessary, further 2,4,6-trifluorotriazine must still be added. A neutral solution of 169 g of 1,3-diaminobenzene-4-sulphonic acid in 2 l of water is then added. The condensation is carried out for 1 hour at 0.degree.-5.degree. C. and pH 6-7. The temperature is then allowed to rise to 15.degree.-20.degree. C., the indicated pH being maintained. The resulting solution can be diazotized in the conventional manner.

Further valuable reactive dyestuffs, which dye cotton in the colour hues indicated in Table 1, column 5, are obtained when, according to the instructions in Example 1, the diazotized diazo component indicated in column 2 is coupled under acid conditions with the coupling component indicated in column 3, and the diazotized diazo component indicated in column 4 is coupled with the monoazo compound thus obtained.

__________________________________________________________________________Example__________________________________________________________________________2 1-aminobenzene-4-.beta.- H acid 2-fluoro-4-(2'-sulpho-4'-chloro-phenylamino)- navy blue 28 sulphatoethylsulphone 6-(3"-amino-4"-sulpho-phenylamino)-triazine3 1-aminobenzene-4-.beta.- " 2-fluoro-4-(2'-sulpho-4'-methoxy-phenylamino)- " 28 sulphatoethylsulphone 6-(3"-amino-4"-sulpho-phenylamino)-triazine4 1-aminobenzene-2-.beta.- " 2-fluoro-4-(2'-sulpho-phenylamino)-6-(3"- " 28 sulphatoethylsulphone amino-4"-sulpho-phenylamino)-triazine5 1-aminobenzene-3-.beta.- " 2-fluoro-4-(2'-sulpho-phenylamino)-6-(3"- " 28 sulphatoethylsulphone amino-4"-sulpho-phenylamino)-triazine6 1-aminobenzene-4-.beta.- K acid 2-fluoro-4-(2'-sulpho-4'-methyl(-phenylamino)- reddish-tinged 38 sulphatoethylsulphone 6-(3"-amino-4"-sulpho-phenylamino)-triazine navy blue7 1-aminobenzene-4-.beta.- H acid 2-fluoro-4-(2'-sulpho-4'-chloro-phenylamino)- greenish-tinged 39 sulphatoethylsulphone 6-(4"-amino-3"-sulpho-phenylamino)-triazine navy blue8 1-aminobenzene-4-.beta.-thio- " 2-fluoro-4-(2'-sulpho-4'-chloro-phenylamino)- greenish-tinged 39 sulphatoethylsulphone 6-(4"-amino-3"-sulpho-phenylamino)-triazine navy blue9 1-aminobenzene-4-.beta.-thio- K acid 2-fluoro-4-(2'-sulpho-4'-chloro-phenylamino)- navy blue 28 sulphatoethylsulphone 6-(4"-amino-3"-sulpho-phenylamino)-triazine10 2-amino-naphthalene-6- H acid 2-fluoro-4-(2'5'-disulpho-phenylamino)-6- " .beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine11 2-amino-naphthalene-6- K acid 2-fluoro-4-(2'5'-disulpho-phenylamino)-6- reddish-tinged 38 .beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine navy blue12 2-amino-naphthalene-8- H acid 2-fluoro-4-(2'5'-disulpho-phenylamino)-6- navy blue 28 .beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine13 2-amino-naphthalene-8- K acid 2-fluoro-4-(2'5'-disulpho-phenylamino)-6- reddish-tinged 38 .beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine navy blue14 2-amino-naphthalene-6,8- H acid 2-fluoro-4-(2'5'-disulpho-phenylamino)-6- navy blue 28 di-.beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine15 2-amino-naphthalene-6,8- K acid 2-fluoro-4-(2'5'-disulpho-phenylamino)-6- reddish-tinged 38 di-.beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine navy blue16 1-amino-2-sulphobenzene- H acid 2-fluoro-4-(2'-sulpho-phenylamino)-6- navy blue 28 4-.beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine17 1-amino-2-methylbenzene " 2-fluoro-4-(2'-sulpho-phenylamino)-6- " 5-.beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine18 1-amino-2,5-dimethoxy-4- " 2-fluoro-4-(2'-sulpho-phenylamino)-6- " .beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine19 2-amino-naphthalene-6- " 2-fluoro-4-(2'-sulpho-phenylamino)-6- " .beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine20 2-amino-naphthalene-6- K acid 2-fluoro-4-(2'-sulpho-phenylamino)-6- reddish-tinged 38 .beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine navy blue21 2-amino-naphthalene- H acid 2-fluoro-4-(2'-sulpho-phenylamino)-6- navy blue 28 8-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine22 2-amino-naphthalene- K acid 2-fluoro-4-(2'-sulpho-phenylamino)-6- reddish-tinged 38 8-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine navy blue23 2-amino-naphthalene-6,8- H acid 2-fluoro-4-(2'-sulpho-phenylamino)-6- navy blue 28 di-.beta. -sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine24 2-amino-naphthalene-6,8- K acid 2-fluoro-4-(2'-sulpho-phenylamino)-6- reddish-tinged 38 di-.beta.-sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine navy blue25 1-aminobenzene-4-.beta.- H acid 2-fluoro-4-(2'-sulpho-4'-methyl-phenylamino)-6- greenish-tinged 39 sulphatoethylsulphone (4"-amino-3"-sulpho-phenylamino)-triazine navy blue26 1-aminobenzene-4-.beta.- K acid 2-fluoro-4-(2'-sulpho-4'-methyl-phenylamino)-6- navy blue sulphatoethylsulphone 4"-amino-3"-sulpho-phenylamino)-triazine27 1-aminobenzene-4-.beta.- H acid 2-fluoro-4-(2"-sulpho-4'-methoxy-phenylamino)-6- greenish tinged 39 sulphatoethylsulphone (4"-amino-3"-sulpho-phenylamino)-triazine navy blue28 1-aminobenzene-4-.beta.-thio- " 2-fluoro-4-(2'-sulpho-phenylamino)-6- navy blue 28 sulphatoethylsulphone (3"-4"-sulpho-phenylamino)-triazine29 1-aminobenzene-4-.beta.-thio- K acid 2-fluoro-4-(2'-sulpho-phenylamino)-6- reddish-tinged 38 sulphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine navy blue30 1-aminobenzene-4-.beta.- H acid 2-fluoro-4-(2'-sulpho-phenylamino)-6- navy blue 28 phosphatoethylsulphone (3"-amino-4"-sulpho-phenylamino)-triazine__________________________________________________________________________

Claims

1. A reactive dyestuff of the formula ##STR17## wherein B=CH.dbd.CH.sub.2 or CH.sub.2 CH.sub.2 OSO.sub.3 H,

u and v=H or SO.sub.3 H, with u.noteq.v,

R=Cl, Br, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, COOH, SO.sub.3 H, NHCOCH.sub.3, SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H

n=0, 1 or 2 ##STR18##

2. a dyestuff according to claim 1, of the formula ##STR19##