CH178748A - Process for the preparation of a dye of the triarylmethane series. - Google Patents

Process for the preparation of a dye of the triarylmethane series.

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Publication number
CH178748A
CH178748A CH178748DA CH178748A CH 178748 A CH178748 A CH 178748A CH 178748D A CH178748D A CH 178748DA CH 178748 A CH178748 A CH 178748A
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CH
Switzerland
Prior art keywords
dye
preparation
triarylmethane series
dyes
series
Prior art date
Application number
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German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH178748A publication Critical patent/CH178748A/en

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Description

  

  Verfahren zur Herstellung eines Farbstoffes der     Triarylmethanreihe.       Es sind bereits Verfahren zur Darstellung  von Farbstoffen der     Triarylmethanreihe,     welche die Gruppe  
EMI0001.0003     
    worin     "alk"        Aryl    und "R" Wasserstoff, Al  kyl,     Aralkyl    oder     Aryl    bedeuten, enthalten,  beschrieben worden.  



  Es wurde nun gefunden,     .dass    man zu  wertvollen Farbstoffen der     Triarylmethan-          reihe    gelangt, wenn man solche Farbstoffe  dieser Reihe, die die Gruppe  
EMI0001.0011     
         worin"alk"    für- eine substituierte     Alkylgruppe     und     "R"    für Wasserstoff,     Alkyl,,        Aralkyl    oder       Aryl    steht, enthalten, nach an sich bekann  ten Verfahren hergestellt.

   Als     Substituenten,     die in dem     Alkylrest    der     Sulfonalkylgruppe       vorhanden     sein    können, seien beispielsweise  genannt:     Hydroxyl,    die     verätherte        Ilydroxyl-          gruppe    und Halogen.  



  Die Herstellung .der Farbstoffe kann in  der Weise erfolgen,     dass    man aromatische  Amine der allgemeinen Formel  
EMI0001.0027     
    worin     "alk"    für eine     substituierte        Alkyl-          gruppe    und     "R"    für Wasserstoff,     Alkyl,          Aralkyl    oder     Aryl    steht,

   zu ihrem Aufbau  verwendet     bezw.    dass man in die     Amino-          gruppe    von fertig gebildeten     Triaryl-          methanfarbstoffen    nachträglich die Gruppe       alk-S03H    einführt.  



  Selbstverständlich kann man gegebenen  falls die neuen Farbstoffe dadurch herstellen,  dass man in die     Alkylgruppe    des fertig ge  bildeten     Farbstoffes    nachträglich     Substi-          tuenten    einführt oder vorhandene Substitu-      entere nach an sich bekannten Verfahren  durch andere ersetzt.  



  Die so erhältlichen Farbstoffe haben die  gleichen guten Eigenschaften wie die ein  gangs beschriebenen.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines Farb  stoffes der     Triarylmethanreihe.    Es besteht  darin, dass man 2     Mol        1-o-Tolyl-amino-2-          oxypropan-3-sulfonsäure    mit 1     Mol        p-Chlor-          benz-aldehyd    kondensiert, die     Leukoverbin-          dung    zum Farbstoff oxydiert und den so er  hältlichen Farbstoff mit     p-Phenetidin    um  setzt.

      <I>Beispiel:</I>  27 Gewichtsteile     1-o-tolylamino-2-oxy-          propan-3-sulfosaures    Natrium werden in 200  Gewichtsteilen Wasser und 25 Gewichtsteilen    20%iger Schwefelsäure mit 7,5 Gewichts  teilen     p-Chlorbenzaldehyd    zur     Leukoverbin-          dung    kondensiert, und diese wird durch Oxy  dation in einen blaugrünen Farbstoff über  geführt.  



  12 Gewichtsteile des getrockneten Farb  stoffes trägt man unter Rühren langsam bei  <B>70'</B> C in etwa 50 Gewichtsteile     p-Pheneti-          din    ein und erhitzt die Masse hierauf meh  rere Stunden auf 1,00 bis 110   C, bis der  grünblaue Farbstoff vollständig verschwun  den und in ein reines Violett übergegangen  ist. Die     Farbstoffschmelze    wird nun in über  schüssige, verdünnte Salzsäure eingetragen  und die wässerige     Phenetidinlösung    vom  Farbstoff abgetrennt. Nach     Umlösen    aus  heissem Wasser erhält man einen die     Fasser     in violetten Tönen anfärbenden     Farbstoff    der  vermutlichen Konstitution:  
EMI0002.0023     




  Process for the preparation of a dye of the triarylmethane series. There are already processes for the preparation of dyes of the triarylmethane series, which the group
EMI0001.0003
    wherein "alk" is aryl and "R" is hydrogen, alkyl, aralkyl or aryl, has been described.



  It has now been found that valuable dyes of the triarylmethane series are obtained if such dyes of this series, which include the group
EMI0001.0011
         where "alk" is a substituted alkyl group and "R" is hydrogen, alkyl, aralkyl or aryl, prepared by processes known per se.

   Examples of substituents which may be present in the alkyl radical of the sulfonic alkyl group are: hydroxyl, the etherified hydroxyl group and halogen.



  The dyes can be prepared in such a way that aromatic amines of the general formula
EMI0001.0027
    where "alk" stands for a substituted alkyl group and "R" stands for hydrogen, alkyl, aralkyl or aryl,

   used for their structure respectively. that the group alk-SO3H is subsequently introduced into the amino group of fully formed triaryl methane dyes.



  Of course, if necessary, the new dyes can be prepared by subsequently introducing substituents into the alkyl group of the finished dyestuff or by replacing existing substituents with others according to processes known per se.



  The dyes obtainable in this way have the same good properties as those described above.



  The subject of the present patent is a process for the preparation of a dye of the triarylmethane series. It consists in condensing 2 moles of 1-o-tolylamino-2-oxypropane-3-sulfonic acid with 1 mole of p-chlorobenzene aldehyde, oxidizing the leuco compound to form the dye, and p -Phenetidine implements.

      <I> Example: </I> 27 parts by weight of 1-o-tolylamino-2-oxy-propane-3-sulphonic acid sodium are in 200 parts by weight of water and 25 parts by weight of 20% sulfuric acid with 7.5 parts by weight of p-chlorobenzaldehyde to form the leucoverbin - Manure condenses, and this is converted into a blue-green dye by oxidation.



  12 parts by weight of the dried dyestuff are slowly added to about 50 parts by weight of p-phenetidine at 70 ° C. and the mixture is then heated to 1.00 to 110 ° C. for several hours until the green-blue dye has completely disappeared and has turned into a pure purple. The dye melt is then introduced into excess, dilute hydrochloric acid and the aqueous phenetidine solution is separated off from the dye. After dissolving from hot water, a dye of the presumed constitution is obtained which stains the barrels in violet tones:
EMI0002.0023


 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farb stoffes der Triarylmethanreihe, dadurch ge kennzeichnet, dass man 2 Mol 1-o-Tolylamino- 2-ogypropan-3-sulfonsäure- mit 1 Mol p-Chlor- benzaldehyd kondensiert, die Leukoverbin- dung zum Farbstoff oxydiert und den so er- hältlichen Farbstoff mit p-Phenetidin um setzt. . Der Farbstoff färbt die Faser in violet ten Tönen. PATENT CLAIM: A process for the production of a dye of the triarylmethane series, characterized in that 2 moles of 1-o-tolylamino-2-ogypropane-3-sulfonic acid are condensed with 1 mole of p-chlorobenzaldehyde and the leuco compound is oxidized to form the dye and the dye thus obtainable with p-phenetidine. . The dye colors the fiber in purple tones.
CH178748D 1932-09-07 1933-12-09 Process for the preparation of a dye of the triarylmethane series. CH178748A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH163012T 1932-09-07
DE178748X 1932-12-22

Publications (1)

Publication Number Publication Date
CH178748A true CH178748A (en) 1935-07-31

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ID=25717694

Family Applications (1)

Application Number Title Priority Date Filing Date
CH178748D CH178748A (en) 1932-09-07 1933-12-09 Process for the preparation of a dye of the triarylmethane series.

Country Status (1)

Country Link
CH (1) CH178748A (en)

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