CH139393A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

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Publication number
CH139393A
CH139393A CH139393DA CH139393A CH 139393 A CH139393 A CH 139393A CH 139393D A CH139393D A CH 139393DA CH 139393 A CH139393 A CH 139393A
Authority
CH
Switzerland
Prior art keywords
preparation
vat dye
vat
dye
aminobenzanthrone
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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
Publication of CH139393A publication Critical patent/CH139393A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Küpenfarbstoifes.       In dem Hauptpatent ist ein Verfahren  zur Herstellung eines wertvollen     Küpenfarb-          stoffes    beschrieben, bei dem man las     5-          Aminobenzanthron    mit     alkalischen        Mitteln     behandelt.  



  Es wurde nun gefunden,     d.ass    das 6  Aminobenzanthron bei der Behandlung mit       Ätzka.li    in einen wertvollen     Küpenfarbstoff     übergeht. Der neue Farbstoff färbt Baum  wolle aus violetter     Küpe    in     grünlichgrauen     Tönen, die beim Chloren nach dunkelgrün       umschlagen    und löst sich in konzentrierter  Schwefelsäure mit bordeauxroter Farbe.  



       Beispiel:     In .eine Schmelze von 20 Teilen Kali  hydrat werden bei 230   2 Teile     6-Amino-          benzanthron    eingetragen und noch etwa. eine    halbe     Stunde    bei der gleichen Temperatur ge  rührt. Darauf arbeitet man in der üblichen  Weise auf.



  Process for the preparation of a vat dye. The main patent describes a process for the production of a valuable vat dye in which 5-aminobenzanthrone is treated with alkaline agents.



  It has now been found that the 6 aminobenzanthrone changes into a valuable vat dye when treated with Ätzka.li. The new dye dyes cotton from a violet vat in greenish-gray tones that turn dark green when chlorinated and dissolves in concentrated sulfuric acid with a burgundy red color.



       Example: In a melt of 20 parts of potassium hydrate, 2 parts of 6-aminobenzanthrone are entered at 230 and about. stirred for half an hour at the same temperature. You work on it in the usual way.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, daP man 6-Aminobenzanthron mit Ätzalka.li be handelt. Der neue Farbstoff färbt Baumwolle aus violetter Küpe in grünlichgrauen Tönen, die beim Chloren nach dunkelgrün umschlagen und löst sich in konzentrierter Schwefelsäure mit bordeauxroter Farbe. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that 6-aminobenzanthrone is treated with caustic alkali. The new dye dyes cotton from a violet vat in greenish-gray tones, which change to dark green when chlorinated and dissolves in concentrated sulfuric acid with a claret-red color.
CH139393D 1927-08-18 1928-06-22 Process for the preparation of a vat dye. CH139393A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE139393X 1927-08-18
CH137470T 1928-06-22

Publications (1)

Publication Number Publication Date
CH139393A true CH139393A (en) 1930-04-15

Family

ID=25712993

Family Applications (1)

Application Number Title Priority Date Filing Date
CH139393D CH139393A (en) 1927-08-18 1928-06-22 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH139393A (en)

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