GB2030591A - Azo reactive dyestuffs - Google Patents

Azo reactive dyestuffs Download PDF

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Publication number
GB2030591A
GB2030591A GB7930436A GB7930436A GB2030591A GB 2030591 A GB2030591 A GB 2030591A GB 7930436 A GB7930436 A GB 7930436A GB 7930436 A GB7930436 A GB 7930436A GB 2030591 A GB2030591 A GB 2030591A
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United Kingdom
Prior art keywords
dyestuff
denotes
acid
general formula
sulpho
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Granted
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GB7930436A
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GB2030591B (en
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Bayer AG
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Bayer AG
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B62/00Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
    • C09B62/02Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring
    • C09B62/04Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring to a triazine ring
    • C09B62/08Azo dyes
    • C09B62/085Monoazo dyes

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Dyestuffs of the formula <IMAGE> wherein D is a radical of a naphthalene mono-, di- or tri-sulphonic acid, R is H, methyl or ethyl, and X is H, halogen, C1-C4 alkyl, C1-C4 alkoxy, carboxyl sulpho or acylamino, and their use for dyeing and printing materials containing hydroxyl groups or amide groups, such as textile fibres, filaments and fabrics of wool, silk or synthetic polyamide and polyurethane fibros, and for dyeing and printing natural or regenerated cellulose with dyeings and prints which are fast to washing.

Description

SPECIFICATION Azo reactive dyestuffs The present invention relates to azo reactive dyestuffs of the formula
wherein D= the radical of a naphthalene-mono-, -di- or -tri-sulphonic acid, R=hydrogen, methyl or ethyl and X=hydrogen, C1-C4-alkyl, C1-C4-alkoxy, halogen, such as fluorine, chlorine or bromine, or a carboxyl, sulpho or acylamino group, such as acetylamino, ureido, formylamino or oxalylamino.
Examples of a mines of the formula D-NH2 (Il) are the following: 2-amino-naphthalene-1 -sulphonic acid, 2-amino-naphthalene-1 5-disulphonic acid, 2-amino-naphthalene- 1 ,5,7-trisulphonic acid, 2-amino-naphthalene-3,6-disulphonic acid, 2-aminonaphthalene-3,6,8-trisulphonic acid, 2-amino-naphthalene-4,8-disu Iphonic acid, 2-amino-naphthalene4,6,8-trisulphonic acid, 2-a mino-naphthalene-5,7-disulphon ic acid, 2-a mino-naphthalene-6,8disulphonic acid, 2-amino-naphthaíene-6-sulphonic acid, 2-amino-naphthalene-8-sulphonic acid, 1amino-naphthalene-4-sulphonic acid, 1 -amino-naphthalene-5-sulphonic acid, 1 -amino-naphthalene-6- sulphonic acid, 1 -amino-naphthalene-7-sulphonic acid, 1 -amino-naphthalene-4,6-disulphonic acid, 1 a mino-naphtha lene-4.7-disulphonic acid, 1 -amino-naphtha lene-3,6-disulphonic acid, 2-am ino-6-nitro- naphthalene-4,8-disulphonic acid and 2-a mino-6-acetylamino-naphthalene-4,8-disu Iphonic acid.
Preferred compounds correspond to the formulae
wherein R and X have the meaning indicated above and R,=hydrogen or suipho, and
wherein R, R, and X have the meaning indicated above.
Compounds of the formulae (Ill) and (IV) in which a) X=hydrogen, b) X=sulpho, c) X and R=hydrogen, or d) X=sulpho and R=hydrogen, are particularly preferred.
The invention furthermore relates to a processforthe preparation of the compounds of the formula (I). It consists of a procedure in which dyestuffs of the formula
wherein D and R have the meaning indicated above, are subjected to condensation reactions with 2,4,6-trifluoro-1 ,3,5-triazine, hydrofluoric acid being split off, and the resulting difluoro compound is reacted with an amine of the formula
wherein X has the meaning indicated above, hydrofluoric acid being split off, to give (I).
The condensation of the dyestuffs (V) with s-trifluorotriazine is preferably carried out in aqueous solution or suspension, at low temperature and at a weakly acid, neutral to weakly alkaline pH value.
The condensation reaction is advantageously carried out in the pH range of 3-5. The hydrogen fluoride liberated is buffered by adding aqueous alkali metal hydroxides, carbonates or bicarbonates.
The reaction of the difluoro compound with the amines (VI) is likewise preferably carried out in aqueous solution or suspension. at low temperature and at a weakly acid, neutral to weakly alkaline pH value.
The hydrogen fluoride liberated during the condensation reaction is neutralised by adding aqueous alkali metal hydroxides, carbonates or bicarbonates. In general, isolation of the difluoro compound is dispensed with.
In the case where X=sulpho or carboxyl, the dyestuffs (I) can also be prepared by a process in which p-sulphanilic acid or 4-carboxy-aniline is first reacted with s-trifluorotriazine and the condensation with the dyestuff (V) is then carried out.
A further possibility for the preparation of (I) consists of a process in which diazotised amines (II) are combined with coupling components of the formula
wherein X and R have the meaning indicated above, in a weakly acid, neutral to weakly alkaline range.
The dyestuffs (V) are obtained by coupling the diazotised amines (II) with I-acid under such conditions that the coupling preferably takes place in the o-position reiative to the hydroxyl group of the I-acid. However, coupling with a N-acylated I-acid is in general preferred, the acyl radical subsequently being split off by warming in an acid or alkaline medium. Possible acyl radicals are, in particular, acetyl, ca rba moyl, methoxycarbonyl, ethoxycarbonyl or--COO-(l-acid urea by reaction with phosgene).
Examples of amines (VI) are the following: aniline, 4-methyl-aniline, 4-ethyl-aniline, 4-iso-propylaniline, 4-methoxy-aniline, 4-ethoxy-aniline, 4-iso-propoxy-aniline, 4-fluoroaniline, 4-chloroaniline, 4bromoaniline, 4-ca rboxy-aniline, 4-sulpho-aniline, 4-acetylamino-aniline or 4-carbamoyl-aniline.
The new dyestuffs are suitable for dyeing and printing materials containing hydroxyl groups or amide groups, such as textile fibres-, filaments and fabrics of wool, silk or synthetic polyamide, and polyurethane fibres, and for dyeing and printing natural or regenerated cellulose with dyeings and prints which are fast to washing, the treatment of cellulose materials appropriately being carried out, by the processes disclosed for reactive dyestuffs, in the presence of acid-binding agents and if appropriate by the action of heat.
The formulae indicated for the dyestuffs are those of the corresponding free acids. In general, the dyestuffs were isolated and employed for dyeing in the form of the alkali metal salts, in particular the Na salts.
EXAMPLE 1 55.3 g of the dyestuff of the formula 1 ,5-disulpho-naphthalenet 2 azo 2 21 -hydroxy-3-su Ipho-6amino-naphthaiene are dissolved in a mixture of 400 ml of water and 200 g of ice. 14 g of strifluorotriazine are then added dropwise and a pH value of 3.5-4.5 is simultaneously maintained by adding 20% strength sodium carbonate solution. When the acylation reaction has ended, 9.3 g of aniline are added, the pH value is adjusted to 6 with 20% strength sodium carbonate solution and the mixture is stirred at pH 6 until the second condensation reaction has ended. The temperature is 0--100.
The dyestuff is separated out by adding sodium chloride, filtered off dried and ground. A light red powder which dissolves in water giving an orange-coloured solution results. The dyestuff corresponds to the formula
Example Column 1 Column 2 Column 3 Column 4 2 2-amino-1,5-disulphonaphthalene 1-hydroxy-3-sulpho-6-amino- p-sulphanilic acid orange naphthalene 3 " " 4-carboxy-aniline " 4 " " p-aniline " 5 " " p-toluidine " 6 " " p-chloroaniline " 7 " " p-fluoroaniline " 8 " 1-hydroxy-3-sulpho-6-methylamino- aniline " maphthalene 9 " " p-toluidine " 10 " " p-anisidine " 11 " " p-phenetidine " 12 " " p-chloroaniline " 13 2-amino-1,5,7-trisulphoaniline 1-hydroxy-3-sulpho-6-amino- aniline " naphthalene 14 " " p-toluidine " 15 " " p-anisidine " 16 " " p-phenetidine " 17 " " p-chloroaniline " 18 " " p-fluoroaniline " 19 2-amino-3,6-disulphonaphthalene " aniline scarlet 20 " " p-sulphanilic acid " Example Column 1 Column 2 Column 3 Column 4 21 2-amino-3,6-disulphonaphthalene 1-hydroxy-3-sulpho-6-smino- 4-carboxyaniline scarlet naphthalene 22 " " p-anisidine " 23 2-amino-3,6,8-trisulphoaniline " aniline " 24 " " p-toluidine " 25 " " p-anisidine " 26 " " p-chloroaniline " 27 " " 2-amino-3,6-disulphonaphthalene 1-hydroxy-3-sulpho-6-methylamino- aniline " naphthalene 28 " 1-hydroxy-3-sulpho-6-ethylamino- aniline " naphthalene 29 2-amino-4,6,8-trisulphonaphthalene 1-hydroxy-3-sulpho-6-amino- aniline red naphthalene 30 " " p-toluidine " 31 2-amino-4,8-disulphonaphthalene " aniline " 32 " " p-sulphanilic acid " 33 2-amino-5,7-disulphonaphthalene " p-sulphanilic acid " 34 2-amino-6,8-disulphonaphthalene " p-sulphanilic acid " 35 1-amino-4,7-disulphonaphthalene " p-sulphanilic acid " 36 1-amino-4,6-disulphonaphthalene " p-sulphanilic acid " 37 1-amino-3,6-disulphonaphthalene " p-sulphanilic acid " EXAMPLE 38 55.3 g of the dyestuff of the formula 1 ,5-disulpho-naphthalene( 2 azo 2 1 -hydroxy-3-sulpho-6amino-naphthalene are stirred in a mixture of 300 ml of water and 100 g of ice. An ice-cold aqueous solution of 28.8 g of 2,4-difluoro-6-(4'-sulphophenylamino)-1 ,3,5-triazine is then added and the condensation reaction is carried out in the pH range of 5 to 6 and in the temperature range of O to 150. The dyestuff is salted out, filtered off, dried and ground. The dyestuff is identical to the product obtained according to Example 2).

Claims (15)

1. A dvestuffofthe aeneral formula
in which D denotes a radical of a naphthalene-mono-, -di- or -tri-sulphonic acid, R denotes a hydrogen atom or a methyl or ethyl group and X denotes a hydrogen or a halogen atom or a C, to C4 alkyl, C to C4 alkoxy, carboxyl, sulpho or acylamino group.
2. A dyestuff according to claim 1 in which X denotes a fluorine, chlorine or bromine atom.
3. A dyestuff according to claim 1 of the general formula
in which R and X have the same meanings as in claim 1 and R1 denotes a hydrogen atom or a sulpho group.
4. A dyestuff according to claim 1 of the general formula
in which R and X have the same meanings as indicated in claim 1 and R, has the same meaning as in claim 2.
5. A dyestuff according to claim 3 or 4 in which X denotes a hydrogen atom.
6. A dyestuff according to claim 3 or 4 in which X denotes a sulpho group.
7. A dyestuff according to claim 3 or 4 in which X and R denote hydrogen atoms.
8. A dyestuff according to claim 3 or 4 in which X denotes a sulpho group and R denotes a hydrogen atom.
9. A dyestuff according to claim 1 as herein before specifically identified.
1 0. A process for the production of a dyestuff as claimed in claim 1 in which a dyestuff of the general formula.
In welch U and H have the same meanings as in claim 1, is reacted with 2,4,6-trifluoro-1 3,5-triazine, 1 mol of hydrofluoric acid being split off, and the resulting difluoro compound is subjected to a condensation reaction with an amines of the general formula
in which X has the same meaning as in claim 1, 1 mol of hydrofluoric acid being split off.
1 1. A process for the production of a dyestuff as claimed in claim 1 in which an amineofthe general formula D-NH2 (II) in which D has the same meaning as in claim 1, is diazotised and coupled with a coupling component of the general formula
in which X and R have the same meanings as in claim 1, in a weakly acid, neutral to weakly alkaline range.
12. A process for the production of a dyestuff as claimed in claim 1 when carried out substantially as described in any one of the Examples.
13. A dyestuff as claimed in claim 1 when produced by the process of any of claims 10to 12.
14. A process for dyeing or printing a fibre material containing hydroxyi groups or amide groups comprising treating the material with a dyestuff as claimed in any of claims 1 to 9 and 13.
15. A fibre material containing hydroxyl groups or amide groups when dyed or printed by the process of claim 14.
GB7930436A 1978-09-05 1979-09-03 Azo reactive dyestuffs Expired GB2030591B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782838608 DE2838608A1 (en) 1978-09-05 1978-09-05 AZO REACTIVE DYES

Publications (2)

Publication Number Publication Date
GB2030591A true GB2030591A (en) 1980-04-10
GB2030591B GB2030591B (en) 1982-11-03

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GB7930436A Expired GB2030591B (en) 1978-09-05 1979-09-03 Azo reactive dyestuffs

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JP (1) JPS5536291A (en)
CH (1) CH661740A5 (en)
DE (1) DE2838608A1 (en)
FR (1) FR2435509B1 (en)
GB (1) GB2030591B (en)
IT (1) IT7925447A0 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074557A2 (en) * 1981-09-10 1983-03-23 Bayer Ag Reactive azo dyestuffs
GB2128200A (en) * 1982-09-17 1984-04-26 Sandoz Ltd Chloro-triazinyl mondazo compounds
US5149791A (en) * 1989-11-01 1992-09-22 Ciba-Geigy Corporation Chlorotriazine reactive dyes having a 4-methoxy-2-sulfoaniline diazo component and 2-amino-5-naphthol-7-sulfonic acid coupling component

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2847916C2 (en) * 1978-11-04 1984-04-26 Basf Ag, 6700 Ludwigshafen Reactive dyes and their use
CN104559320A (en) * 2014-04-28 2015-04-29 无锡润新染料有限公司 Composite active brilliant orange dye composition

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE638184A (en) * 1962-10-04 1900-01-01
DE1644208C3 (en) * 1967-04-19 1978-06-01 Bayer Ag, 5090 Leverkusen Reactive dyes
IT1116356B (en) * 1976-07-12 1986-02-10 Ciba Geigy Ag REACTIVE AZO DYES FOR FIBERS AND PROCEDURE FOR THEIR PRODUCTION AND APPLICATION
LU78115A1 (en) * 1977-09-12 1979-05-23 Ciba Geigy Ag AZO DYES, THEIR PRODUCTION AND USE
CH641197A5 (en) * 1977-12-23 1984-02-15 Sandoz Ag REACTIVE MONOAZO DYES AND METHOD FOR THE PRODUCTION THEREOF.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074557A2 (en) * 1981-09-10 1983-03-23 Bayer Ag Reactive azo dyestuffs
EP0074557A3 (en) * 1981-09-10 1983-06-22 Bayer Ag Reactive azo dyestuffs
GB2128200A (en) * 1982-09-17 1984-04-26 Sandoz Ltd Chloro-triazinyl mondazo compounds
US5149791A (en) * 1989-11-01 1992-09-22 Ciba-Geigy Corporation Chlorotriazine reactive dyes having a 4-methoxy-2-sulfoaniline diazo component and 2-amino-5-naphthol-7-sulfonic acid coupling component

Also Published As

Publication number Publication date
FR2435509B1 (en) 1985-07-19
IT7925447A0 (en) 1979-09-03
GB2030591B (en) 1982-11-03
DE2838608C2 (en) 1988-01-14
DE2838608A1 (en) 1980-03-20
JPS5536291A (en) 1980-03-13
CH661740A5 (en) 1987-08-14
FR2435509A1 (en) 1980-04-04

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