CH155337A - Process for the production of a nitrogenous vat dye. - Google Patents

Process for the production of a nitrogenous vat dye.

Info

Publication number
CH155337A
CH155337A CH155337DA CH155337A CH 155337 A CH155337 A CH 155337A CH 155337D A CH155337D A CH 155337DA CH 155337 A CH155337 A CH 155337A
Authority
CH
Switzerland
Prior art keywords
dye
production
nitrogenous
vat dye
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 CH155337A publication Critical patent/CH155337A/en

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

Description

  

  Verfahren zur Herstellung eines     stickstoffhaltigen        Küpenfarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines stickstoff  haltigen     Küpenfarbstoffes,    dadurch gekenn  zeichnet,     dass    man     Bz.1-Bei)zanthronyl-l-          amino-5-dimethylaminoanthrachition    mit ei  nem alkalischen Kondensationsmittel behan  delt.  



  Der neue Farbstoff löst sich in konzen  trierter Schwefelsäure mit grüner Farbe und  färbt Baumwolle aus blauvioletter     Küpe    in  echten     graubla,tien    Tönen.  



  Durch     Umlösen    des Farbstoffes aus kon  zentrierter Schwefelsäure wird das     Egalisie-          rungsvermögen    noch gesteigert.    <I>Beispiel:</I>    <B>50</B> Teile Bz.     1-Benzanthronyl-l-amino-5-          dimethylamijjoanthraehinon    werden allmäh  lich in eine auf<B>150-160 1'</B> gehaltene Schmelze  von<B>300</B> Teilen     Ätzkali    und<B>50</B> Teilen Alko  hol eingetragen. Die Reaktionstemperatur       lässt    man hierauf auf<B>180-200 0</B> steigen und  verdünnt nach etwa einer Stunde die Schmelze    mit Wasser.

   Der Farbstoff wird entweder  durch Ausblasen mit Luft oder durch An  säuern unter Zugabe einer geringen     hIenge     eines Oxydationsmittels, wie Wasserstoffsu  peroxyd, abgeschieden und gewaschen.



  Process for the production of a nitrogenous vat dye. The present patent relates to a process for the production of a nitrogen-containing vat dye, characterized in that Bz.1-Bei) zanthronyl-1-amino-5-dimethylaminoanthraite ion is treated with an alkaline condensing agent.



  The new dye dissolves in concentrated sulfuric acid with a green color and dyes cotton from a blue-violet vat in real gray-blue tones.



  By redissolving the dye from concentrated sulfuric acid, the leveling capacity is increased even further. <I> Example: </I> <B> 50 </B> parts Bz. 1-Benzanthronyl-1-amino-5-dimethylamijjoanthraehinone are gradually converted into a melt of <B> 300 </B> parts of caustic potash and <B> 50 </ B held at <B> 150-160 1 '</B> > Share alcohol registered. The reaction temperature is then allowed to rise to <B> 180-200 0 </B> and, after about an hour, the melt is diluted with water.

   The dye is deposited and washed either by blowing out with air or by acidifying with the addition of a small amount of an oxidizing agent such as hydrogen peroxide.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines stickstoff haltigen Küpenfarbstoffes, dadurch gekenn zeichnet, dass man Bz. 1-Benzanthi#oriyl-l- amino-5-dimethylamitioanthrachiiion init ei nem alkalischen Kondensationsmittel behan delt. Der neue Farbstoff löst 3ich in konzen trierter Schwefelsäure mit grüner Farbe und färbt Baumwolle aus blauvioletter Küpe in echten blaugraueti Tönen. PATENT CLAIM: Process for the production of a nitrogen-containing vat dye, characterized in that Bz. 1-Benzanthi # oriyl-1-amino-5-dimethylamitioanthrachiiion treated with an alkaline condensing agent. The new dye dissolves in concentrated sulfuric acid with a green color and dyes cotton from a blue-violet vat in real blue-gray tones. Durch Umlösen des Farbstoffes aus kon zentrierter Schwefelsäure wird das Egalisie- rungsvermögen noch gesteigert. By redissolving the dye from concentrated sulfuric acid, the leveling capacity is increased even further.
CH155337D 1930-02-04 1931-01-29 Process for the production of a nitrogenous vat dye. CH155337A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE155337X 1930-02-04
DE301230X 1930-12-30
CH152887T 1931-01-29

Publications (1)

Publication Number Publication Date
CH155337A true CH155337A (en) 1932-06-15

Family

ID=27177314

Family Applications (1)

Application Number Title Priority Date Filing Date
CH155337D CH155337A (en) 1930-02-04 1931-01-29 Process for the production of a nitrogenous vat dye.

Country Status (1)

Country Link
CH (1) CH155337A (en)

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