CH145341A - Process for the preparation of a vat dye containing chlorine and bromine. - Google Patents

Process for the preparation of a vat dye containing chlorine and bromine.

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Publication number
CH145341A
CH145341A CH145341DA CH145341A CH 145341 A CH145341 A CH 145341A CH 145341D A CH145341D A CH 145341DA CH 145341 A CH145341 A CH 145341A
Authority
CH
Switzerland
Prior art keywords
bromine
preparation
containing chlorine
vat dye
dye containing
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 CH145341A publication Critical patent/CH145341A/en

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

Description

  

      Verfahren    zur Darstellung eines Chlor und Brom enthaltenden     itüpenfarbstoffes.       Im Hauptpatent ist ein Verfahren zur  Darstellung eines Chlor und Brom ent  haltenden     Küpenfarbstoffes    beschrieben, bei  dem 1 Hol     Isodibenzanthron    in Gegenwart  von     Chlorsulfonsäure    und von     Katalysatoren     mit mindestens einem halben Hol eines     bro-          mierenden    Mittels behandelt wird.  



  Es wurde nun gefunden, dass man  einen Farbstoff von ähnlichen     Eigenschaften     erhalten kann, wenn man 1 Hol     Isodi-          benzanthron    in Gegenwart von     Chlorsulfon-          säure    und metallischen     Katalysatoren    mit  mindestens 2 Hol eines     bromierenden    Mit  tels behandelt.  



  Der erhaltene     Küpenfarbstoff,    ein     Tetra-          bromisodibenzanthron,    das etwas Chlor ent  hält, ist ein violettes Pulver, löst sich  in konzentrierter Schwefelsäure mit grüner  Farbe und liefert auf Baumwolle aus blauer       Küpe    klare, kräftige, violette Färbungen von       hervorragenden        Echtheitseigenschaften,       <I>Beispiel:</I>  46 Teile     Isodibenzanthron    -werden unter  Rühren in 460 Teilen     Chlorsulfonsäure    ge  löst.

   Nach Zugabe von 4 Teilen     Antimon     lässt man 46 Teile Brom zufliessen,     erlicht     die Temperatur auf 65 bis (0   C und rührt  so lange, bis die Hauptmenge des     ange-          wandten    Broms aufgenommen ist. Darauf  lässt man erkalten und arbeitet in der     üblichc>ii     Weise auf.  



  Die Reaktion kann auch bei tieferer Tem  peratur durchgeführt werden.  



  An Stelle von Antimon kann man auch  andere Katalysatoren,     zuin    Beispiel Nickel,  Eisen,     Molybdän,    Quecksilber, Wismut. Ar  sen usw., anwenden.



      Process for the preparation of a chlorine-bromine-containing dye. The main patent describes a process for the preparation of a vat dye containing chlorine and bromine, in which 1 pint of isodibenzanthrone is treated in the presence of chlorosulfonic acid and catalysts with at least half a pint of a brominating agent.



  It has now been found that a dye with similar properties can be obtained if one part of isodibenzanthrone is treated in the presence of chlorosulfonic acid and metallic catalysts with at least 2 parts of a brominating agent.



  The vat dye obtained, a tetrabromoisodibenzanthrone containing some chlorine, is a violet powder, dissolves in concentrated sulfuric acid with a green color and provides clear, strong, violet dyeings with excellent fastness properties on cotton from a blue vat, <I> Example: 46 parts of isodibenzanthrone are dissolved in 460 parts of chlorosulfonic acid with stirring.

   After adding 4 parts of antimony, 46 parts of bromine are allowed to flow in, the temperature is raised to 65 to (0 C and the mixture is stirred until the majority of the bromine used has been absorbed. The mixture is then allowed to cool and the procedure is customary on.



  The reaction can also be carried out at a lower temperature.



  Instead of antimony one can also use other catalysts, for example nickel, iron, molybdenum, mercury, bismuth. Arsenic, etc., apply.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Chlor und Brom enthaltenden Küpenfarbstoffes, da durch gekennzeichnet, dass man 1 Mol Isodi- benzanthron in Gegenwart von Chlorsulfon- säure und metallischen Katalysatoren mit mindestens 2 Hol eines bromierenden Mit tels behandelt. PATENT CLAIM: Process for the preparation of a vat dye containing chlorine and bromine, characterized in that 1 mole of isodibenzanthrone is treated in the presence of chlorosulfonic acid and metallic catalysts with at least 2 parts of a brominating agent. Der erhaltene IT üpenfarbstoff, ein Tetra- bromisodibenzanthron, das etwas Chlor ent hält, ist ein violettes Pulver, löst sich in konzentrierter Schwefelsäure mit grüner Farbe und liefert auf Baumwolle aus blauer Küpe klare, kräftige, violette Färbungen von hervorragenden Echtheitseigenschaften. The IT overen dye obtained, a tetrabromoisodibenzanthrone containing some chlorine, is a purple powder, dissolves in concentrated sulfuric acid with a green color and gives clear, strong, violet dyeings with excellent fastness properties on cotton from a blue vat.
CH145341D 1928-03-13 1929-03-12 Process for the preparation of a vat dye containing chlorine and bromine. CH145341A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE145341X 1928-03-13
CH141548T 1929-03-12

Publications (1)

Publication Number Publication Date
CH145341A true CH145341A (en) 1931-02-15

Family

ID=25713861

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145341D CH145341A (en) 1928-03-13 1929-03-12 Process for the preparation of a vat dye containing chlorine and bromine.

Country Status (1)

Country Link
CH (1) CH145341A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326191A (en) * 1964-07-06 1967-06-20 Hailwood & Ackroyd Ltd Fuel injector and method of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326191A (en) * 1964-07-06 1967-06-20 Hailwood & Ackroyd Ltd Fuel injector and method of making same

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