CH145331A - 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.

Info

Publication number
CH145331A
CH145331A CH145331DA CH145331A CH 145331 A CH145331 A CH 145331A CH 145331D A CH145331D A CH 145331DA CH 145331 A CH145331 A CH 145331A
Authority
CH
Switzerland
Prior art keywords
bromine
vat dye
preparation
blue
containing chlorine
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 CH145331A publication Critical patent/CH145331A/en

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  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines Chlor und Brom enthaltenden     Küpenfarbstoifeo.       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  mfierenden     Mittels    behandelt wird.  



  Es wurde nun gefunden, dass man  einen Farbstoff von     ähnlichen    Eigenschaften  erhalten kann, wenn man 1 -,Hol     Di-          benzanthron    in     Gegenwart    von     Chlorsulfon-          säure    und einem metallischen Katalysator  mit     mindestens    1     Mol    eines     bromfierenden     Mittels behandelt.  



  Der erhaltene     Küpenfarbstoff,'ein        Dibrom-          dibenzanthron,    das etwas Chlor enthält, ist  ein blauviolettes Pulver, löst sich in kon  zentrierter Schwefelsäure mit violetter Farbe  und liefert auf Baumwolle aus     violettblauer          Küpe    klare, kräftige, marineblaue Färbun  gen von hervorragenden Echtheitseigen  schaften.         Beispiel     46 Teile reines     Dibenzanthron        werden     in 460 Teilen     Chlorsulfonsäure    unter Rüh  ren gelöst und nach Zugabe von     -1    Teilen  Antimon mit 30 Teilen Brom versetzt.

    Darauf wird erwärmt auf 50 bis<B>60'</B>     C.    und  man rührt bei dieser Temperatur so lange, bis  alles Brom aufgenommen ist.     -Nach        dein    Er  kalten verdünnt. man mit.     ?60    Teilen     konzen-          trierter    Schwefelsäure. giesst auf Eis. kocht  kurz auf, saugt ab und arbeitet in der übli  chen Weise auf.  



  An Stelle von Antimon     kann    man     einen     andern Katalysator, zum Beispiel     -Nickel.     Mangan, Eisen,     Molybdän,    Quecksilber. Wis  mut, Arsen usw., anwenden.



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



  It has now been found that a dye with similar properties can be obtained if 1 -, Hol dibenzanthrone is treated in the presence of chlorosulfonic acid and a metallic catalyst with at least 1 mol of a brominating agent.



  The vat dye obtained, a dibromodibenzanthrone which contains some chlorine, is a blue-violet powder, dissolves in concentrated sulfuric acid with a violet color and, on cotton from a violet-blue vat, provides clear, strong, navy-blue dyeings with excellent fastness properties. Example 46 parts of pure dibenzanthrone are dissolved in 460 parts of chlorosulfonic acid with stirring and, after the addition of -1 part of antimony, 30 parts of bromine are added.

    This is followed by heating to 50 to <B> 60 '</B> C. and stirring at this temperature until all the bromine has been absorbed. -After your he thins cold. one with. 60 parts concentrated sulfuric acid. poured on ice. boils up briefly, sucks off and works up in the usual way.



  Another catalyst, for example nickel, can be used instead of antimony. Manganese, iron, molybdenum, mercury. Use wisdom, arsenic, etc.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Chlor unil Brom enthaltenden Küpenfarbstoffes. da durch gekennzeichnet, dass man 1 Mol Di- benzanthron in Gegenwart von Chlorsulfon- säure und einem metallischen Katalysator mit mindestens 1 Mol eines bromierenden Mittels behandelt. PATENT CLAIM: Process for the preparation of a vat dye containing chlorine and bromine. characterized in that 1 mole of dibenzanthrone is treated in the presence of chlorosulfonic acid and a metallic catalyst with at least 1 mole of a brominating agent. Der erhaltene Küpenfarbstoff, ein Dibrom- dibenzanthron, das etwas Chlor enthält, ist ein blauviolettes Pulver, löst sieh in kon zentrierter Schwefelsäure mit violetter Farbe und liefert auf Baumwolle aus violettblauer Küpe klare, kräftige, marineblaue Färbun gen von hervorragenden Echtheitseigen schaften. The vat dye obtained, a dibromodibenzanthrone containing some chlorine, is a blue-violet powder, dissolves in concentrated sulfuric acid with a violet color and provides clear, strong, navy-blue dyeings with excellent fastness properties on cotton from a violet-blue vat.
CH145331D 1928-03-13 1929-03-12 Process for the preparation of a vat dye containing chlorine and bromine. CH145331A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE145331X 1928-03-13
CH141548T 1929-03-12

Publications (1)

Publication Number Publication Date
CH145331A true CH145331A (en) 1931-02-15

Family

ID=25713851

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145331D CH145331A (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) CH145331A (en)

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