CH137470A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

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Publication number
CH137470A
CH137470A CH137470DA CH137470A CH 137470 A CH137470 A CH 137470A CH 137470D A CH137470D A CH 137470DA CH 137470 A CH137470 A CH 137470A
Authority
CH
Switzerland
Prior art keywords
preparation
vat dye
dye
blue
vat
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 CH137470A publication Critical patent/CH137470A/en

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  • Coloring (AREA)

Description

  

      Verfahren    zur Darstellung eines     Küpenfarbstoffes.       Es wurde gefunden, dass man einen wert  vollen     Küpenfarbstöff    erhalten kann, wenn  man     5-Amino-benzanthron    mit alkalischen  Mitteln behandelt.  



  Der neue     Farbstoff    färbt Baumwolle aus       grünstichig    blauer     Küpe    in blauen, chlorechten  Tönen     ünd    löst sich in konzentrierter Schwe  felsäure mit bordeauxroter Farbe.  



  <I>Beispiel:</I>       Mau    erhitzt 10 Teile Kalihydrat mit 8  Teilen Äthylalkohol unter Rühren auf 140 ,       tri,gt    sodann 1,5 Teile     5-Arniriobenzanthrori    ein       und    hält noch eine     halbe    Stunde bei 140-150 .  Nach dieser Zeit giesst man in Wasser, schei  det den gebildeten Farbstoff durch Einleiten  von Luft aus und arbeitet ihn in der üblichen    Weise auf. Verschmilzt man     5-Aminobenz-          anthron    mit Kalihydrat ohne Zusatz     voll     Alkohol bei 230 , so erhält man einen etwas  weniger klar färbenden     Farbstoff.  



      Process for the preparation of a vat dye. It has been found that a valuable vat dye can be obtained by treating 5-amino-benzanthrone with alkaline agents.



  The new dye dyes cotton from a greenish blue vat in blue, chlorine-proof tones and dissolves in concentrated sulfuric acid with a claret-red color.



  <I> Example: </I> Mau heats 10 parts of potassium hydrate with 8 parts of ethyl alcohol to 140 while stirring, then adds 1.5 parts of 5-arniriobenzanthrori and keeps it at 140-150 for another half hour. After this time it is poured into water, the dye formed is separated out by passing in air and it is worked up in the usual way. If 5-aminobenzanthrone is fused with potassium hydrate without the addition of full alcohol at 230, a dye with a somewhat less clear color is obtained.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man 5-Aminobenzanthron mit alkalischen Mitteln behandelt. Der neue Farbstoff färbt Baumwolle aus grünstichig blauer güpe in blauen, chlorechten Tönen und löst sich in konzentrierter Schwe felsäure finit bordeauxroter Farbe. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that 5-aminobenzanthrone is treated with alkaline agents. The new dye dyes cotton from a greenish blue güpe in blue, chlorine-resistant tones and dissolves in concentrated sulfuric acid in a finite claret-red color.
CH137470D 1927-08-18 1928-06-22 Process for the preparation of a vat dye. CH137470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE137470X 1927-08-18

Publications (1)

Publication Number Publication Date
CH137470A true CH137470A (en) 1930-01-15

Family

ID=5666847

Family Applications (1)

Application Number Title Priority Date Filing Date
CH137470D CH137470A (en) 1927-08-18 1928-06-22 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH137470A (en)

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