DE925122C - Process for the preparation of water-insoluble monoazo dyes - Google Patents

Process for the preparation of water-insoluble monoazo dyes

Info

Publication number
DE925122C
DE925122C DEF12526A DEF0012526A DE925122C DE 925122 C DE925122 C DE 925122C DE F12526 A DEF12526 A DE F12526A DE F0012526 A DEF0012526 A DE F0012526A DE 925122 C DE925122 C DE 925122C
Authority
DE
Germany
Prior art keywords
water
preparation
monoazo dyes
insoluble monoazo
dinitrobenzene
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.)
Expired
Application number
DEF12526A
Other languages
German (de)
Inventor
Albert Dr Funke
Hans Dr Raab
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to DEF12526A priority Critical patent/DE925122C/en
Application granted granted Critical
Publication of DE925122C publication Critical patent/DE925122C/en
Expired 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
    • C09B29/10Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/18Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
    • C09B29/20Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Coloring (AREA)

Description

Verfahren zur Herstellung von wasserunlöslichen Monoazofarbstoffen In der Patentschrift 256 999 ist ein Verfahren zur Herstellung wasserunlöslicher Monoazofarbstoffe aus Diazoverbindungen der Benzolreihe, die mindestens eine von der Sulfonsäuregruppe verschiedene negative Gruppe enthalten, und den Arylamiden der 2, 3-Oxynaphthoesäure beschrieben. Unter den zahlreichen dort aufgeführten Beispielen ist auch der Farbstoff aus diazotiertem i-Amino-2, 4-dinitrobenzol und 2, 3-Oxynaphthoylaminobenzol zu finden. Das Verfahren der Patentschrift 39o 627 andererseits ist auf die Herstellung solcher wasserunlöslichen Azofarbstoffe gerichtet, die als Azokomponente o-Alkoxyarylamide der 2, 3-Oxynaphthoesäure enthalten. In dieser Patentschrift, die auf die Patentschrift 256 999 Bezug nimmt, sind verschiedene Diazoverbindungen genannt, jedoch nicht die aus i-Amino-2, 4.-dinitrobenzol.Process for the preparation of water-insoluble monoazo dyes In the patent specification 256 999 is a process for the preparation of water-insoluble Monoazo dyes from diazo compounds of the benzene series which contain at least one of the sulfonic acid group contain different negative groups, and the arylamides of 2, 3-oxynaphthoic acid described. Among the numerous examples listed there is also the dye from diazotized i-amino-2, 4-dinitrobenzene and 2, 3-oxynaphthoylaminobenzene to find. The method of Patent 39o627, on the other hand, is to manufacture such water-insoluble azo dyes directed as azo component o-alkoxyarylamide contain the 2,3-oxynaphthoic acid. In this patent referring to the patent specification 256 999 references, various diazo compounds are mentioned, but not the from i-amino-2,4-dinitrobenzene.

Es wurde nun gefunden, daß durch Kupplung von diazotiertem i-Amino-2, 4-dinitrobenzol mit o-Alkoxyarylamiden der 2, 3-Oxynaphthoesäure z. B. mit dem o-Anisidid oder dem o-Phenetidid rote bis bordofarbige Pigmente von sehr wertvollen Eigenschaften" wie guter ü'berspritzechtheit der damit angefärbten Lacke, guter Lösungsmittelechtheit und insbesondere von hervorragender Lichtechtheit erhalten werden. Die Pigmente eignen sich infolgedessen vorzüglich für die Verwendung in Ölanstrichen, graphischen Drucken, ferner für das Färben von Nitrocellulose- und Alkydharzlacken, bei denen gute überspritzechtheit und Sublimierechtheit gefordert wird, sowie für den textilen Pigmentdruck. In der Lichtechtheit übertreffen die neuen Farbstoffe die aus den Patentschriften 256 999 und 39o 627 bekannten Farbstoffe.It has now been found that by coupling diazotized i-amino-2, 4-dinitrobenzene with o-alkoxyarylamides of 2, 3-oxynaphthoic acid z. B. with the o-anisidide or the o-phenetidide red to bordo-colored pigments with very valuable properties " such as good fastness to over-spraying of the varnishes stained with it, good fastness to solvents and particularly excellent in lightfastness. The pigments As a result, they are ideally suited for use in oil and graphic paints Printing, also for the coloring of nitrocellulose and alkyd resin varnishes, where Good fastness to overmolding and sublimation is required, as well as for the textile Pigment printing. In terms of lightfastness, the new dyes surpass those from the patents 256 999 and 39o 627 known dyes.

Beispiel i 18,3 g i-Amino-2, ¢-dinitrobenzol werden innerhalb 1/2 Stunde in ein Gemisch von 198 g Schwefelsäure von 66°B8 und i7,3 g Nitrosylschwefelsäure (= 6,9 g Nitrit) bei einer bis 30° steigenden Temperatur eingetragen. Unter allmählicher Lösung wird die Base diazotiert; man gießt auf 300 g Eis und etwas Wasser und klärt nach Zugabe von wenig Filterkohle.EXAMPLE i 18.3 g of i-amino-2, [-dinitrobenzene] are dissolved in a mixture of 198 g of sulfuric acid of 66 ° B8 and 17.3 g of nitrosylsulfuric acid (= 6.9 g of nitrite) at one to 30th hour in the course of 1/2 hour ° rising temperature entered. The base is diazotized with gradual dissolution; it is poured onto 300 g of ice and a little water and clarified after adding a little filter charcoal.

32,3g i-(2', 3'-Oxynaphthoylamino) -2-äthoxybenzol werden in Zoo ccm Wasser und 12,q. ccm Natronlauge, 4qo/oig, bei 70° gelöst und geklärt. Nach Zugabe eines Emulgators, beispielsweise eines Alkylsulfonats der Kettenlänge C15, kühlt man mittels Eis auf 2° ab und fällt mit 2i ccm 5o°/oiger Essigsäure die Azokomponente aus. Dazu läßt man rasch die Diazoverbindung laufen, rührt längere Zeit und führt schließlich bei q.0° die Kupplung zu Ende. Es wird abgesaugt und neutral gewaschen. Das getrocknete, bordorote Pigment (q.8 g) gibt in Öl angerieben eine ausgezeichnete Lasur; in Nitrocellulose eingearbeitet erhält man gut überspritzechte Lackierungen. Die Lichtechtheit derartiger Anfärbungen ist hervorragend.32.3 g of i- (2 ', 3'-Oxynaphthoylamino) -2-ethoxybenzene are in Zoo ccm Water and 12, q. ccm sodium hydroxide solution, 4%, dissolved and clarified at 70 °. After adding an emulsifier, for example an alkyl sulfonate of chain length C15, cools it is reduced to 2 ° by means of ice and the azo component is precipitated with 2 ml of 50% acetic acid the end. To do this, the diazo compound is quickly run, stirred for a long time and carried out finally at q.0 ° the coupling comes to an end. It is suctioned off and washed neutral. The dried, bordeaux-red pigment (q.8 g) rubbed in oil gives an excellent result Glaze; Incorporated in nitrocellulose, one obtains paintwork that has been sprayed over well. The lightfastness of such dyeings is excellent.

Beispiel 2 Die nach Beispiel i erhaltene Diazoverbindung aus i-Amino-2, 4-dinitrobenzol wird analog den Angaben des Beispiels i mit 3o,8 g i-(2', 3'-Oxynaphthoylamino)-2-methoxybenzol gekuppelt, das aus seiner alkalischen Lösung mittels 17,7 ccm Schwefelsäure 40' B8 ausgefällt ist. Das so gewonnene Pigment zeigt bei praktisch gleich guten Eigenschaften einen erheblich blaustichigeren Farbton als der im Beispiel i beschriebene Farbstoff.Example 2 The diazo compound obtained according to Example i from i-amino-2, 4-Dinitrobenzene is analogous to the instructions in Example i with 3o.8 g of i- (2 ', 3'-oxynaphthoylamino) -2-methoxybenzene coupled, which from its alkaline solution by means of 17.7 ccm sulfuric acid 40 ' B8 has failed. The pigment obtained in this way shows practically the same good properties a significantly more bluish hue than the dye described in example i.

Die Kupplung kann auch bei Gegenwart von geglühtem Titandioxyd - oder Bariumsulfat vorgenommen werden, der im Beispiel i angeführte Emulgator durch andere, wie Alkylpolyglykoläther, ersetzt werden.The coupling can also be carried out in the presence of calcined titanium dioxide or Barium sulfate are made, the emulsifier listed in example i by other, such as alkyl polyglycol ethers.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung wasserunlöslicher Monoazofarbstoffe, dadurch gekennzeichnet, daß man diazotiertes i-Amino-2, q.-dinitrobenzol mit o-Alkoxyarylamiden der 2, 3-Oxynaphthoesäure für sich oder auf einer Grundlage kuppelt.PATENT CLAIM: Process for the production of water-insoluble monoazo dyes, characterized in that diazotized i-amino-2, q.-dinitrobenzene with o-alkoxyarylamides which couples 2,3-oxynaphthoic acid by itself or on a basis.
DEF12526A 1953-08-05 1953-08-05 Process for the preparation of water-insoluble monoazo dyes Expired DE925122C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF12526A DE925122C (en) 1953-08-05 1953-08-05 Process for the preparation of water-insoluble monoazo dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF12526A DE925122C (en) 1953-08-05 1953-08-05 Process for the preparation of water-insoluble monoazo dyes

Publications (1)

Publication Number Publication Date
DE925122C true DE925122C (en) 1955-03-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEF12526A Expired DE925122C (en) 1953-08-05 1953-08-05 Process for the preparation of water-insoluble monoazo dyes

Country Status (1)

Country Link
DE (1) DE925122C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257312B (en) * 1959-01-29 1967-12-28 Hoechst Ag Process for the production of azo pigments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257312B (en) * 1959-01-29 1967-12-28 Hoechst Ag Process for the production of azo pigments

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