CH145335A - 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
CH145335A
CH145335A CH145335DA CH145335A CH 145335 A CH145335 A CH 145335A CH 145335D A CH145335D A CH 145335DA CH 145335 A CH145335 A CH 145335A
Authority
CH
Switzerland
Prior art keywords
bromine
preparation
vat dye
containing chlorine
violet
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 CH145335A publication Critical patent/CH145335A/en

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Description

  

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



  Es wurde nun gefunden,     dass    man  einen Farbstoff von ähnlichen Eigenschaften  erhalten kann, wenn man 1     Mol        Di-          benzanthron    in     Gegenwart    von     Chlorsulfon-          säure    und metallischen Katalysatoren mit  mindestens     11i2        Mol    eines     bromierenden    Mit  tels behandelt.  



  Der erhaltene     Küpenfarbstoff,    ein     Tri-          bromdibenzanthron,    das etwas Chlor enthält,  ist ein     violettblaues    Pulver, löst sich in     kon-          zentrierter        _Schwefelsäure    mit violetter Farbe  und liefert auf Baumwolle aus blauvioletter       Küpe    klare, kräftige, rein marineblaue Fär  bungen von hervorragenden Echtheitseigen  schaften.

           Beispiel     46 Teile     Dibenzanthron    werden unter  Rühren bei gewöhnlicher Temperatur in  460 Teilen     Chlorsulfonsäure    gelöst.     'Nach     Zugabe von 4 Teilen Mangan gibt     Dran     35 Teile Brom zu, erhöht die Temperatur  langsam auf 60 bis 70       ("    und hält bei  dieser Temperatur, bis die     IIauptnietige     des Broms aufgenommen ist. Dann lässt     man     erkalten und arbeitet in der üblichen     "'ei.e     auf.  



  An Stelle von Mangan kann man     auch     andere Katalysatoren, zum     sseispii1    Antimon.  Nickel, Eisen,     Molybdän.        Quecksilber,     Wis  mut, Arsen usw., anwenden.



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



  It has now been found that a dye with similar properties can be obtained if 1 mole of dibenzanthrone is treated in the presence of chlorosulfonic acid and metallic catalysts with at least 11 1/2 moles of a brominating agent.



  The vat dye obtained, a tribromodibenzanthrone that contains some chlorine, is a violet-blue powder, dissolves in concentrated sulfuric acid with a violet color and produces clear, strong, purely navy blue dyeings with excellent fastness properties on cotton from a blue-violet vat.

           Example 46 parts of dibenzanthrone are dissolved in 460 parts of chlorosulfonic acid at ordinary temperature with stirring. 'After adding 4 parts of manganese, Dran adds 35 parts of bromine, slowly increases the temperature to 60 to 70 ("and holds it at this temperature until all of the bromine has been absorbed. Then you let it cool and work in the usual" egg .e on.



  Instead of manganese you can also use other catalysts, for sseispii1 antimony. Nickel, iron, molybdenum. Use mercury, wis mut, arsenic, etc.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Chlor und Brom enthaltenden Küpenfarbstoffes, da durch gekennzeichnet, da.ss man 1 Mol Di- benzanthron in Gegenwart von Chlorsulfon- säure und metallischen Katalysatoren mit mindestens ll@ Mol eines bromierenden Mit tels behandelt. PATENT CLAIM: Process for the preparation of a vat dye containing chlorine and bromine, characterized in that 1 mol of dibenzanthrone is treated in the presence of chlorosulfonic acid and metallic catalysts with at least 11 mol of a brominating agent. Der erhaltene Küpenfarbstoff, ein Tri- bromdibenzanthron, das etwas Chlor enthält, ist ein violettblaues Pulver. löst sich in kon zentrierter Schwefelsäure mit violetter Farbe und liefert auf Baumwolle aus blauvioletter Küpe klare, kräftige, rein marineblaue Fär bungen von hervorragenden Echtheitseigen schaften. The vat dye obtained, a tribromodibenzanthrone containing some chlorine, is a violet-blue powder. dissolves in concentrated sulfuric acid with a violet color and produces clear, strong, pure navy blue dyeings with excellent fastness properties on cotton from a blue-violet vat.
CH145335D 1928-03-13 1929-03-12 Process for the preparation of a vat dye containing chlorine and bromine. CH145335A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE145335X 1928-03-13
CH141548T 1929-03-12

Publications (1)

Publication Number Publication Date
CH145335A true CH145335A (en) 1931-02-15

Family

ID=25713855

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145335D CH145335A (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) CH145335A (en)

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