DE1544413A1 - Process for the production of azo dyes - Google Patents

Process for the production of azo dyes

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Publication number
DE1544413A1
DE1544413A1 DE19661544413 DE1544413A DE1544413A1 DE 1544413 A1 DE1544413 A1 DE 1544413A1 DE 19661544413 DE19661544413 DE 19661544413 DE 1544413 A DE1544413 A DE 1544413A DE 1544413 A1 DE1544413 A1 DE 1544413A1
Authority
DE
Germany
Prior art keywords
parts
azo dyes
production
acid
mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19661544413
Other languages
German (de)
Inventor
Hahn Dr Erwin
Wippel Dr Hans Guenter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of DE1544413A1 publication Critical patent/DE1544413A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C09B29/00Monoazo dyes prepared by diazotising and coupling
    • C09B29/0025Monoazo dyes prepared by diazotising and coupling from diazotized amino heterocyclic compounds

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

Verfahren zur Herstellung von Az of arbstoffen Es wurde gefunden, daß man wertvolle sulf onsäuregruppenfreie Azofarbstoffe der allgemeinen Formei erhält, in der R eine Methyl- oder Äthylgruppe bedeutet, wenn man diazotiertes 3--Methyimercapto-5-aminothiadiazol-(1,2,4) der Formel mit Verbindungen der- allgemeinen Formel kuppelt, wobei R die angegebene Bedeutung hat.Process for the preparation of azo dyes It has been found that valuable azo dyes of the general formula which are free from sulfonated acid groups can be used obtained, in which R is a methyl or ethyl group, if one diazotized 3 - Methyimercapto-5-aminothiadiazole (1,2,4) of the formula with compounds of the general formula coupling, where R has the meaning given.

Die Herstellung der Diazoniumverbindung und die Kupplung bieten keine Besonderheiten und werden daher nach bekannten Methoden ausgeführt. Die neuen Farbstoffe eignen sich vorzüglich zum Färben von Textilmaterial, wie Fasern, Flocken, Gewirken und Geweben, aus Celluloseestern oder -äthern oder synthetischen faserbildendem Material, wie Arylnitrilpolymerisaten, Polyolefinen oder Polyamiden. Insbesondere auf Polyestern, wie Polyäthylenterephthalat oder auf Basis von Terephthalsäure und 1,4-Dimethylolcyclohexan aufgebauten Polymeren, erhält man vorzügliche Färbungen. Zweckmäßigerweise verwendet man beim Färben Färbebeschleuniger, d.h., sogenannte Carrier, oder man färbt bei Temperaturen oberhalb 100 °C nach dem Hochtemperaturverfahr en. Ebenfalls verwendbar sind die Farbstoffe beim sogenannten Thermosolverfahren.The preparation of the diazonium compound and the coupling offer none Special features and are therefore carried out according to known methods. the new dyes are particularly suitable for dyeing textile material, such as fibers, Flakes, knitted and woven fabrics, made from cellulose esters or ethers or synthetic fiber-forming material, such as aryl nitrile polymers, polyolefins or polyamides. In particular on polyesters such as polyethylene terephthalate or based on terephthalic acid and 1,4-dimethylolcyclohexane, excellent colorations are obtained. It is expedient to use dye accelerators in dyeing, i.e. so-called Carrier, or dyeing at temperatures above 100 ° C using the high-temperature process en. The dyes can also be used in the so-called thermosol process.

Die erhaltenen Färbungen zeichnen sich durch ein allgemein gutes Echtheitsniveau, sehr gute Lichtechtheit und insbesondere durch ihre ungewöhnliche Brillanz aus.The dyeings obtained are characterized by a generally good level of fastness, very good lightfastness and in particular due to their unusual brilliance.

Die Angaben über Teile und Prozente im Ausführungsbeispiel beziehen sich auf das Gewicht.The data on parts and percentages in the exemplary embodiment relate to focus on the weight.

Beispiel Zu einer Mischung aus 15 Teilen konzentrierter Schwefelsäure und 14.85 Teilen Nitrosylschwefelsäure, die 12,$ ,% Distickstofftrioxyd enthält, läßt man bei 0 bis 5 °C langsam 50 Teile eines Gemisches aus Eisessig und Propionsäure im Verhältnis 17 : 3 zulaufen. Sodann gibt man portionsweise 7,35 Teile 3-Methylmercapto-J,-aminothiadiazol-(1,2,4) und allmählich weitere 50 Teile des Eisessig-Propionsäure-Gemisches hinzu und rührt drei Stunden, wobei die Temperatur bei 0 bis 5 °, gehalten wird. Anschließend wird durch Zugabe von einem Teil Harnstoff ein gegebenenfalls vorhandener Übersehuß von Nitrosylschwefelsäure'zerstört, und danach läßt man die Diazolösung in eine Mischung aus 100 Teilen Eis, 11,4 Teilen N--Methyl-N-ß-carbomethoxyäthyl-m-ch'Loranilin, 25 Teilen Wasser- und 10 Teilen konzentrierter Salzsäure einfließen Nach einstündigem Rühren werden 100 Teile einer 20%igen Natriumacetatlösung zugegeben, und nach einer weiteren Stunde wird der ausgefallene Farbstoff abgesaugt, mit Wasser gewaschen und bei 30 °C unter vermindertem Druck getrocknete Example To a mixture of 15 parts of concentrated sulfuric acid and 14.85 parts of nitrosylsulfuric acid containing 12, $,%, dinitrogen trioxide, is slowly 50 parts can be at 0 to 5 ° C a mixture of glacial acetic acid and propionic acid in the ratio 17: run. 3 7.35 parts of 3-methylmercapto-J, -aminothiadiazole- (1,2,4) and gradually a further 50 parts of the glacial acetic acid / propionic acid mixture are then added in portions and the mixture is stirred for three hours, the temperature being 0 to 5 ° is held. Then any excess of nitrosylsulfuric acid is destroyed by adding one part of urea, and then the diazo solution is left in a mixture of 100 parts of ice and 11.4 parts of N-methyl-N-ß-carbomethoxyethyl-m-ch ' Pour in loraniline, 25 parts of water and 10 parts of concentrated hydrochloric acid. After stirring for one hour, 100 parts of a 20% strength sodium acetate solution are added, and after a further hour the precipitated dye is filtered off with suction, washed with water and dried at 30 ° C. under reduced pressure

Claims (1)

Patentansprüche 1. Verfahren zue Herstellung vän Azofarbstoffen der allgem:'Itn'FOr. mel -
in der "R eins -Mstel- -oder. Äthylgruppe bedeUtat, .. ?' ro . . . e . @...' .jolitttt . äafl `man wdiazottbrte4,. 3-Methylme@ro@o-5-emit4othd:as. t 3. @2@@-) der y@rmel . . vr v - , CH S mit verbten dee all.@emeixun- Feme @. -. . J 2ä f , . .# nippe. pti °- 4tiaxrs seäsutun i . r >i . . at 2.. #arbgttotf@ r #Ürml. . , , ' s' 9 n de'. a Mtthy rui pe -.eutot., " a
Claims 1. A method zue vän preparation of azo dyes in general: 'Itn'FOr. mel -
in the "R one -stel - or. ethyl group means ...?" ro ... e . @ ... ' . jol itttt . äafl `man wdiazottbrte4 ,. 3-Methylme @ ro @ o-5-emit4othd: as. t 3. @ 2 @@ -) the y @ rmel . . vr v -, CH S with verbten de e all. @ emeixun- Feme @. -. . J 2ä f,. . # sip. pti ° - 4tiaxrs seäsutun i. r> i. . at 2 .. # arbgttotf @ r # Ürml. . ,, ' s' 9 n de '. a M t thy rui pe -.eut o t. , "a
DE19661544413 1966-08-26 1966-08-26 Process for the production of azo dyes Pending DE1544413A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0088633 1966-08-26

Publications (1)

Publication Number Publication Date
DE1544413A1 true DE1544413A1 (en) 1969-06-26

Family

ID=6984395

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661544413 Pending DE1544413A1 (en) 1966-08-26 1966-08-26 Process for the production of azo dyes

Country Status (2)

Country Link
BE (1) BE698217A (en)
DE (1) DE1544413A1 (en)

Also Published As

Publication number Publication date
BE698217A (en) 1967-10-16

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