CH178544A - Process for the production of a brominated vat dye. - Google Patents

Process for the production of a brominated vat dye.

Info

Publication number
CH178544A
CH178544A CH178544DA CH178544A CH 178544 A CH178544 A CH 178544A CH 178544D A CH178544D A CH 178544DA CH 178544 A CH178544 A CH 178544A
Authority
CH
Switzerland
Prior art keywords
brominated
production
vat dye
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 CH178544A publication Critical patent/CH178544A/en

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Description

  

  Verfahren zur Herstellung eines     bromierten        Küpenfarbstoffes.       Es wurde gefunden, dass man zu wert  vollen     Farbstoffen    gelangt, welche im Ver  gleich zu den Ausgangskörpern durch eine  nach blau verschobene Nuance und ver  besserte Chlorechtheit der damit erzielten  Färbungen ausgezeichnet sind, wenn man       Acylaminogruppen    enthaltende alkalische  Kondensationsprodukte aus     Benzanthronyl-l-          aminoanthrachinonen    einer     Bromierung    unter  milden Bedingungen unterwirft.  



  Vorliegendes Patent bezieht sich nun auf  ein Verfahren zur Herstellung eines     bromier-          ten        Küpenfarbstoffes,    dadurch gekennzeichnet,  dass man auf den nach dem Verfahren gemäss  Patentanspruch des Schweizer Patentes Nr.  150007 erhältlichen     Küpenfarbstoff    Brom in  Mengen, die einen geringen Überschuss über  die für den Eintritt von 2     Atomen    Brom er  forderliche Menge darstellen, einwirken lässt.  



  Der neue Farbstoff löst sich in Schwefel  säure mit grüner Farbe und färbt Baumwolle    aus blauvioletter     Küpe    in blaustichig oliven  Tönen von grosser Echtheit, insbesondere ge  gen Chlor.    <I>Beispiel:</I>    25 kg des Farbstoffes, erhalten gemäss  Schweizer Patent Nr.

   150007 durch Einwir  kung von     Benzoylchlorid    auf das Konden  sationsprodukt, erhalten durch Behandlung  von     Bz-l-benzanthronyl-l-amino-5-amino-          anthrachinon    mit alkalischen Mitteln, werden  in fein verteilter Form mit einer Lösung von  16 kg Brom in etwa 200 kg Eisessig bei       Cxegenwart    von 25 kg     Natriumacetat    und  einer geringen Menge Jod versetzt, und die  Mischung wird dann längere Zeit gerührt.  Hierauf wird die Reaktionsmasse zum Kochen  erhitzt und unter     Rückflusskühlung    noch etwa  3 Stunden gekocht.

   Nach Absaugen und Aus  waschen wird ein Farbstoff erhalten, der     un-          gefähr        11-12%        Brom        enthält.  



  Process for the production of a brominated vat dye. It has been found that valuable dyes are obtained which are distinguished in comparison to the starting materials by a shade shifted to blue and improved chlorine fastness of the dyeings obtained therewith, if acylamino group-containing alkaline condensation products from benzanthronyl-l-aminoanthraquinones of a bromination Subjected under mild conditions.



  The present patent now relates to a process for the production of a brominated vat dye, characterized in that the vat dye obtainable by the process according to the patent claim of Swiss patent no. 150007 is bromine in amounts that are a slight excess over that for the entry of 2 atoms of bromine represent the required amount.



  The new dye dissolves in sulfuric acid with a green color and dyes cotton from a blue-violet vat in blue-tinged olive tones of great fastness, especially to chlorine. <I> Example: </I> 25 kg of the dye, obtained according to Swiss patent no.

   150007 by action of benzoyl chloride on the condensation product, obtained by treating Bz-l-benzanthronyl-l-amino-5-amino-anthraquinone with alkaline agents, are finely divided with a solution of 16 kg of bromine in about 200 kg Glacial acetic acid is added in the presence of 25 kg of sodium acetate and a small amount of iodine, and the mixture is then stirred for a long time. The reaction mass is then heated to the boil and refluxed for another 3 hours.

   After suctioning off and washing off, a dye is obtained which contains approximately 11-12% bromine.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines bromier- ten Küpenfarbstoffes, dadurch gekennzeichnet, dass man auf den nach dem Verfahren gemäss Patentanspruch des Schweizer Patentes Nr. <B>150007</B> erhältlichen Küpenfarbstoff Brom in Mengen, die einen geringen Überschuss über die für den Eintritt von 2 Atomen Brom er forderliche Menge darstellen, einwirken lässt# Der neue Farbstoff löst sich in Schwefel säure mit grüner Farbe und färbt Baumwolle aus blauvioletter Küpe in blaustichig oliven Tönen von grosser Echtheit, insbesondere ge gen Chlor. PATENT CLAIM: Process for the production of a brominated vat dye, characterized in that the vat dye obtainable by the process according to the patent claim of Swiss Patent No. 150007 is bromine in amounts that are a slight excess over the amount required for the Entry of 2 atoms of bromine represents the required amount, allows it to take effect # The new dye dissolves in sulfuric acid with a green color and dyes cotton from a blue-violet vat in blue-tinged olive tones of great fastness, especially against chlorine.
CH178544D 1933-10-25 1934-10-03 Process for the production of a brominated vat dye. CH178544A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE178544X 1933-10-25

Publications (1)

Publication Number Publication Date
CH178544A true CH178544A (en) 1935-07-31

Family

ID=5706146

Family Applications (1)

Application Number Title Priority Date Filing Date
CH178544D CH178544A (en) 1933-10-25 1934-10-03 Process for the production of a brominated vat dye.

Country Status (1)

Country Link
CH (1) CH178544A (en)

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