CH175899A - Process for the preparation of an acidic triphenylmethane dye. - Google Patents

Process for the preparation of an acidic triphenylmethane dye.

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Publication number
CH175899A
CH175899A CH175899DA CH175899A CH 175899 A CH175899 A CH 175899A CH 175899D A CH175899D A CH 175899DA CH 175899 A CH175899 A CH 175899A
Authority
CH
Switzerland
Prior art keywords
acidic
preparation
phenetidine
triphenylmethane dye
dye
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 CH175899A publication Critical patent/CH175899A/en

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Description

  

  Verfahren zur Darstellung eines sauren     Triphenylmethanfarbstofes.       Gegenstand vorliegenden     Patentes    ist ein  Verfahren zur Darstellung eines sauren     Tri-          phenylmethanfarbstoffes,    welches darin be  steht, dass man 4.     4'-Dichlorbenzophenon    mit       Bz-3-chlor-N-äthyl-a-Phenylindol    konden  siert, dann in dem so erhaltenen Konden  sationsprodukt die in 4- und     4'-Stellung    be  findlichen Chloratome mit     p-Phenetidin    um  setzt und die so erhaltene Verbindung mit  einem     sulfierenden        Mittel    behandelt.  



  <I>Beispiel:</I>  25 Gewichtsteile     4.4'-Dichlorbenzophenon     werden mit 26 Gewichtsteilen     Bz-3-chlor-N-          äthyl-a-phenylindol    bei Gegenwart von 20         Gewichtsteilen        Phosphorogychlorid    durch  mehrstündiges Kochen in 100     Gewichtsteilen          Toluol    kondensiert.

   Nach     Abdestillieren    des       Toluols    und des noch vorhandenen Phosphor  ogychlorides wird das     Kondensationsprodukt     4     .Stunden    mit 60     Gewichtsteilen        p-Phene-          tidin    bei 120   verschmolzen.

   Das über  schüssige     p-Phenetidin    wird nach dem Er  kalten der Schmelze durch     Ausrühren    mit  verdünnter Salzsäure,     worin    der entstandene  blaue basische Farbstoff unlöslich ist, ent  fernt, und letzterer nach dem Trocknen mit  Schwefelsäure     sulfiert.    Der so dargestellte  blaue saure Farbstoff folgender Formel:    
EMI0002.0001     
    färbt als     Na-,Salz    Wolle und Seide in klaren  blauen Tönen, die sich durch eine hervor  ragende Lichtechtheit und vorzügliche Abend  farbe auszeichnen.



  Process for the preparation of an acidic triphenylmethane dye. The subject of the present patent is a process for the preparation of an acidic triphenylmethane dye which consists in condensing 4,4'-dichlorobenzophenone with Bz-3-chloro-N-ethyl-a-phenylindole, then in the condens thus obtained sation product is the 4- and 4'-position sensitive chlorine atoms with p-phenetidine and the compound thus obtained is treated with a sulfating agent.



  <I> Example: </I> 25 parts by weight of 4,4'-dichlorobenzophenone are condensed with 26 parts by weight of Bz-3-chloro-N-ethyl-a-phenylindole in the presence of 20 parts by weight of phosphorogychloride by boiling in 100 parts by weight of toluene for several hours.

   After the toluene and the still present phosphorus ogychlorides have been distilled off, the condensation product is fused with 60 parts by weight of p-phenetidine at 120 for 4 hours.

   The excess p-phenetidine is removed after the melt has been cooled by stirring with dilute hydrochloric acid, in which the blue basic dye formed is insoluble, and the latter is sulfated with sulfuric acid after drying. The blue acidic dye represented in this way has the following formula:
EMI0002.0001
    dyes wool and silk in clear blue tones, which are characterized by excellent lightfastness and excellent evening color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Triphenylmethanfarbstoffes, dadurch gekenn zeichnet, daB man 4.4'-Dichlorbenzophenon mit Bz-3-chlor-N-äthyl-a-phenylindol kon densiert, dann in dem so erhaltenen Konden- sationsprodukt die in 4- und 4'-Stellung be findlichen Chloratome mit p-Phenetidin um setzt und die so erhaltene Verbindung mit einem sulfierenden Mittel behandelt. PATENT CLAIM: A process for the preparation of an acidic triphenylmethane dye, characterized in that 4,4'-dichlorobenzophenone is condensed with Bz-3-chloro-N-ethyl-a-phenylindole, then in the condensation product obtained in this way, those in 4- and 4 'Position be sensitive chlorine atoms with p-phenetidine and the compound thus obtained is treated with a sulfating agent. Der so erhaltene blaue, zwei Sulfogruppen enthaltende Farbstoff färbt als Natriumsalz Wolle und Seide in klaren blauen Tönen, die sich durch hervorragende Lichtechtheit und vorzügliche Abendfarbe auszeichnen. UNTERANSPRÜCHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, daB man die Konden sation in Gegenwart von Phosphorogy- chlorid durch mehrstündiges Sieden in Toluo1 bewirkt. 2. The blue dye thus obtained, containing two sulfo groups, dyes wool and silk as the sodium salt in clear blue shades which are distinguished by excellent lightfastness and excellent evening color. SUBClaims 1. Process according to patent claim, characterized in that the condensation is brought about in the presence of phosphorogychloride by boiling in toluene for several hours. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, daB man die Umsetzung mit dem p-Phenetidin durch vierstündiges Verschmelzen bei 120' bewirkt. Process according to patent claim, characterized in that the reaction with the p-phenetidine is effected by fusing at 120 'for four hours.
CH175899D 1932-09-29 1933-08-24 Process for the preparation of an acidic triphenylmethane dye. CH175899A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE175899X 1932-09-29
CH170094T 1933-08-24

Publications (1)

Publication Number Publication Date
CH175899A true CH175899A (en) 1935-03-15

Family

ID=25718874

Family Applications (1)

Application Number Title Priority Date Filing Date
CH175899D CH175899A (en) 1932-09-29 1933-08-24 Process for the preparation of an acidic triphenylmethane dye.

Country Status (1)

Country Link
CH (1) CH175899A (en)

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