DE554586C - Process for the preparation of acidic wool dyes - Google Patents

Process for the preparation of acidic wool dyes

Info

Publication number
DE554586C
DE554586C DE1930554586D DE554586DD DE554586C DE 554586 C DE554586 C DE 554586C DE 1930554586 D DE1930554586 D DE 1930554586D DE 554586D D DE554586D D DE 554586DD DE 554586 C DE554586 C DE 554586C
Authority
DE
Germany
Prior art keywords
preparation
acidic
wool dyes
treated
reducing agents
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
DE1930554586D
Other languages
German (de)
Inventor
Dr Wilhelm Eckert
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of DE554586C publication Critical patent/DE554586C/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
    • C09B51/00Nitro or nitroso dyes

Landscapes

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

Description

Verfahren zur Darstellung von sauren Wollfarbstoffen In dem Patent Sod 570 ist ein Verfahren zur Darstellung von sauren Wollfarbstoffen beschrieben, das darin besteht, daß man Sulfosäuren oder Sulfaminsäuren von Nitronaphthalsäurederivaten vom allgemeinen Typ wobei X Wasserstoff, Alkvl, Aralkyl oder Aryl bedeutet und die Nitrogruppe in verschiedenen Stellungen stehen kann, mit reduzierenden Mitteln behandelt oder sulfofreie Derivate obiger Formel mit solchen reduzierend wirkenden Mitteln behandelt, die gleichzeitig den Eintritt einer Sulfogruppe bewirken, wie Hydrosulfit, Bisulfit usw.Process for the preparation of acidic wool dyestuffs The patent Sod 570 describes a process for the preparation of acidic woolen dyestuffs which consists in the fact that sulfonic acids or sulfamic acids of nitronaphthalic acid derivatives of the general type are described where X denotes hydrogen, alkyl, aralkyl or aryl and the nitro group can be in different positions, treated with reducing agents or treated sulfo-free derivatives of the above formula with reducing agents which simultaneously cause the entry of a sulfo group, such as hydrosulfite, bisulfite, etc.

In Erweiterung des Erfindungsgedankens wurde nun gefunden, daß man auch mit dem gleichen Erfolg von solchen Verbindungen obiger allgemeiner Formel ausgehen kann, worin X den Rest eines substituierten oder nichtsubstituierten hydroaromatischen Kohlenwasserstoffes bedeutet. Man erhält auf diese Weise sehr wertvolle, außerordentlich klare, ,gelbe, saure Wollfarbstoffe.In extension of the inventive concept it has now been found that one also with the same success of such compounds of the above general formula can start, in which X is the radical of a substituted or unsubstituted hydroaromatic Means hydrocarbon. In this way you get very valuable, extraordinary clear, yellow, acidic wool dyes.

Beispiel 35 Gewichtsteile 4-Nitro-r, 8-naphthalsäurecvclohexvlimid - darstellbar z. B. durch Kondensation von 4-Nitro-r, 8-naphthalsäureanhydrid mit Cyclohexylamin - werden mit etwa 70 Raumteilen Alkohol versetzt und mit etwa roo Gewichtsteilen Hydrosulfit in etwa 3oo Raumteilen Wasser einige Stunden zum Sieden erhitzt. Das unlösliche, fast ungefärbte 4-Nitro-z, 8-naphthalsäurecyclohexylimid geht allmählich mit tiefgelber Farbe in Lösung. Nach dem Absaugen der heißen Lösung scheidet sich beim Abkühlen aus dem Filtrat der neue Farbstoff ab; durch Aussalzen in üblicher Weise können weitere Mengen des Farbstoffes erhalten werden. Er stellt ein goldgelbes Pulver dar, welches sich in Wasser löst und aus saurem Bade die tIexische Faser in einem äußerst klaren, grünstichigen Gelb färbt.Example 35 parts by weight of 4-nitro-r, 8-naphthalic acid cvclohexvlimid - can be displayed e.g. B. by condensation of 4-nitro-r, 8-naphthalic anhydride with cyclohexylamine - about 70 parts by volume of alcohol are added and about 300 parts by weight of hydrosulfite are heated to the boil for a few hours with about 300 parts by weight of water. The insoluble, almost uncolored 4-nitro-z, 8-naphthalic acid cyclohexylimide gradually dissolves in a deep yellow color. After the hot solution has been filtered off with suction, the new dye separates out of the filtrate on cooling; further amounts of the dye can be obtained by salting out in the usual manner. It is a golden yellow powder which dissolves in water and, from an acidic bath, colors the Texian fiber in an extremely clear, greenish yellow.

An Stelle von Hvdrosulfit kann mit dem gleichen Erfolg eine Bisulfitlösung angewandt werden.Instead of hydrogen sulfite, a bisulfite solution can be used with the same success can be applied.

Claims (1)

PATENTANSPRUCH: Abänderung des Verfahrens zur Darstellung von sauren Wollfarbstoffen nach Patent 502 57o, dadurch gekennzeichnet, daß man hier Sulfosäuren oder Sulfaminsäuren von Nitronaphthalsäurederivaten der allgemeinen Formel bei denen X den Rest eines substituierten oder nichtsubstituierten hydroaromatischen Kohlenwasserstoffes bedeutet, mit Reduktionsmitteln behandelt oder sulfofreie Derivate obiger Formel mit Reduktionsmitteln behandelt, die gleichzeitig den Eintritt einer Sulfogruppe bewirken.PATENT CLAIM: Modification of the process for the preparation of acidic wool dyes according to Patent 502 57o, characterized in that sulfonic acids or sulfamic acids of nitronaphthalic acid derivatives of the general formula are used here in which X denotes the radical of a substituted or unsubstituted hydroaromatic hydrocarbon, treated with reducing agents or treated sulfo-free derivatives of the above formula with reducing agents which simultaneously cause a sulfo group to enter.
DE1930554586D 1930-05-03 1930-05-03 Process for the preparation of acidic wool dyes Expired DE554586C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE554586T 1930-05-03

Publications (1)

Publication Number Publication Date
DE554586C true DE554586C (en) 1932-07-11

Family

ID=6564141

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930554586D Expired DE554586C (en) 1930-05-03 1930-05-03 Process for the preparation of acidic wool dyes

Country Status (1)

Country Link
DE (1) DE554586C (en)

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