DE494949C - Process for the production of Kuepen dyes - Google Patents

Process for the production of Kuepen dyes

Info

Publication number
DE494949C
DE494949C DEI29683D DEI0029683D DE494949C DE 494949 C DE494949 C DE 494949C DE I29683 D DEI29683 D DE I29683D DE I0029683 D DEI0029683 D DE I0029683D DE 494949 C DE494949 C DE 494949C
Authority
DE
Germany
Prior art keywords
production
dyes
kuepen dyes
vat
kuepen
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
DEI29683D
Other languages
German (de)
Inventor
Dr Hermann Finger
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
Priority to DEI29683D priority Critical patent/DE494949C/en
Application granted granted Critical
Publication of DE494949C publication Critical patent/DE494949C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B57/00—Other synthetic dyes of known constitution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von Küpenfarbstoffen Es ist gefunden worden, daß IsonitrosoacetylderivatevonAminenmitreaktionsfähigen Ketometh lenverbindungen sich zu Küpeny t' farbstoffen kondensieren lassen. Es entstehen hierbei violette bis grüne Farbstoffe.Process for the production of vat dyes It has been found that isonitrosoacetyl derivatives of amines with reactive ketomethylene compounds can be condensed to Küpeny t 'dyes. This creates violet ones to green dyes.

Die Reaktion läßt sich besonders vorteilhaft mit sauren Kondensationsmittelii ausführen. Im allgemeinen scheinen 2 Moi. der Ketomethylenverbin#dung mit i Mol. der Isonitrosoacetylverbindung zusammenzutreten. Z. B. erhält mandurchKondensation von Isonitrosoacetanilid und Oxythionaphthen einen blauvioletten Küpenfarbstoff, der nach der Analyse aus 2 Mol. Oxythionaphthen und i Mol. Isonitrosoacetanilidentstanden ist. Die Farbstoffe färben sowohl Baumwolle wie Wolle aus der Küpe in guter Echtheit an. Durch Halogenieren läßt sich die Nuance noch verändern und die Echtheit verbessern. B c i s p i e 1 4,6 Gewichtsteile Isonitrosoacetanilid und 8 Gewichtsteile Oxythionaphthen werden in ioo Raumteilen Eisessig gelöst und unter Zusatz von wenig konzentrierter Salzsäure etwa io Minuten gekocht. Der Farbstoff scheidet sIch hierbei in kristalliner Form aus. In Schwefelsäure löst er sich mit bräunlichroter Farbe. Aus der alkalischen Hydro,sulfitküpe wer-den Wolle und Baumwolle in violetten Tönen angefärbt.The reaction can be carried out particularly advantageously with acidic condensing agents. In general it seems 2 moi. of the ketomethylene compound to come together with 1 mole of the isonitrosoacetyl compound. For example, the condensation of isonitrosoacetanilide and oxythionaphthene gives a blue-violet vat dye which, according to analysis, is composed of 2 moles of oxythionaphthene and 1 mole of isonitrosoacetanilide. The dyes dye both cotton and wool from the vat with good fastness. The nuance can be changed and the authenticity can be improved by halogenation. B c is p y 1 4.6 parts by weight and 8 parts by weight isonitrosoacetanilide Oxythionaphthen are dissolved in glacial acetic acid and about ioo volume parts cooked with the addition of a small amount of concentrated hydrochloric acid io minutes. The dye separates out in crystalline form. It dissolves in sulfuric acid with a brownish-red color. From the alkaline hydro, sulphite vat, wool and cotton are dyed in violet tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Küpenfarbstoffen, dadurch gekennzeichnet, daß man Isonitrosoacetylverbindungen von Aminen mit Ketomethylenverbindungen kondensiert. PATENT CLAIM: Process for the production of vat dyes, characterized in that isonitrosoacetyl compounds of amines are condensed with ketomethylene compounds.
DEI29683D 1926-12-05 1926-12-05 Process for the production of Kuepen dyes Expired DE494949C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI29683D DE494949C (en) 1926-12-05 1926-12-05 Process for the production of Kuepen dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI29683D DE494949C (en) 1926-12-05 1926-12-05 Process for the production of Kuepen dyes

Publications (1)

Publication Number Publication Date
DE494949C true DE494949C (en) 1930-03-31

Family

ID=7187391

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI29683D Expired DE494949C (en) 1926-12-05 1926-12-05 Process for the production of Kuepen dyes

Country Status (1)

Country Link
DE (1) DE494949C (en)

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