CH157246A - Process for the preparation of an acidic dye of the anthraquinone series. - Google Patents

Process for the preparation of an acidic dye of the anthraquinone series.

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Publication number
CH157246A
CH157246A CH157246DA CH157246A CH 157246 A CH157246 A CH 157246A CH 157246D A CH157246D A CH 157246DA CH 157246 A CH157246 A CH 157246A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
anthraquinone series
amino
acidic
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 CH157246A publication Critical patent/CH157246A/en

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

Description

  

  Verfahren zur Darstellung eines     sauren    Farbstoffes der     Anthraehinonreihe.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines sauren Farb  stoffes der     Anthrachinonreihe,    welches dadurch  gekennzeichnet ist, dass man     3'-Amino-4'-          methyldiphenylmethan-2-carbonsäure    mit     1-          Amino-4-bromanthrachinon-2-sulfosäure    kon  densiert und den so erhaltenen Farbstoff mit  einem sauren, Schwefel enthaltenden Konden  sationsmittel weiter kondensiert.

      <I>Beispiel:</I>  40 Gewichtsteile 3' -     Amino    - 4' -     methyldi-          pheny)methan-2-carbonsäLirechlorhydrat    wer  den in 600 Gewichtsteilen Wasser unter  Zusatz der berechneten Menge Soda gelöst.  Nachdem der Lösung 40 Gewichtsteile  1-     amino    - 4 -     bromanthrachinon    - 2 -     sulfosaures     Natrium, 20 Gewichtsteile     Natriumbikarbonat     und 2 Gewichtsteile     Kupferchlorür    zugefügt  sind, wird das Gemisch zirka 20 Stunden  unter Rühren auf 50-60 o erwärmt. Nach  dieser Zeit hat sich der Farbstoff als volu-         minöse    Masse ausgeschieden.

   Man saugt ab  und reinigt durch Waschen mit warmer  10     o/oiger    Kochsalzlösung und durch     Umlösen     aus verdünnter     Sodalösung.    10 Gewichtsteile  des so erhaltenen Farbstoffes werden in 100  Gewichtsteilen konzentrierter Schwefelsäure  ohne Erwärmen gelöst, wobei die anfänglich  grüne Lösungsfarbe in Rotbraun umschlägt.  



  An Stelle von konzentrierter Schwefelsäure  kann auch     Chlorsulfonsäure    in den gleichen  Mengenverhältnissen angewandt werden.  Durch diese Massnahme tritt lediglich eine  Kondensation und keine     Sulfierung    ein. Nach  kurzem Rühren gibt man auf Wasser, saugt  den ausgeschiedenen Niederschlag ab, wäscht  mit 10     %iger    Kochsalzlösung neutral und  trocknet. Der     Farbstoff    liefert auf Wolle  und Seide schöne blaustichig grüne Färbungen.



  Process for the preparation of an acidic dye of the anthraquinone series. The subject of this additional patent is a process for the preparation of an acidic dye of the anthraquinone series, which is characterized in that 3'-amino-4'-methyldiphenylmethane-2-carboxylic acid is condensed with 1-amino-4-bromoanthraquinone-2-sulfonic acid and the dye thus obtained is further condensed with an acidic, sulfur-containing condensation agent.

      <I> Example: </I> 40 parts by weight of 3 '- amino - 4' - methyldipheny) methane-2-carboxylic acid chlorohydrate who are dissolved in 600 parts by weight of water with the addition of the calculated amount of soda. After 40 parts by weight of 1-amino-4-bromoanthraquinone-2-sulphonic acid, 20 parts by weight of sodium bicarbonate and 2 parts by weight of copper chloride have been added to the solution, the mixture is heated to 50-60 ° for about 20 hours while stirring. After this time, the dye has excreted as a voluminous mass.

   It is suctioned off and cleaned by washing with warm 10% sodium chloride solution and by dissolving from dilute soda solution. 10 parts by weight of the dye thus obtained are dissolved in 100 parts by weight of concentrated sulfuric acid without heating, the initially green solution color changing to red-brown.



  Instead of concentrated sulfuric acid, chlorosulfonic acid can also be used in the same proportions. This measure only results in condensation and not sulphonation. After brief stirring, the mixture is poured into water, the precipitate which has separated out is filtered off with suction, washed neutral with 10% sodium chloride solution and dried. The dye produces beautiful bluish green dyeings on wool and silk.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 3'-Amino-4'-methyl- diphenylmethan-2-carbonsäure mit 7.-Amino- 4-bromanthrachinon-2-sulfosäure kondensiert und den so erhaltenen Farbstoff mit einem sauren, Schwefel enthaltenden Kondensations mittel weiter kondensiert. Der so erhaltene Farbstoff liefert auf Wolle und Seide schöne grüne Färbungen. Claim: Process for the preparation of an acidic dye of the anthraquinone series, characterized in that 3'-amino-4'-methyl-diphenylmethane-2-carboxylic acid is condensed with 7-amino-4-bromoanthraquinone-2-sulfonic acid and the dye thus obtained further condensed with an acidic, sulfur-containing condensation agent. The dye obtained in this way gives beautiful green dyeings on wool and silk. UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation in der zweiten Phase mit konzentrierter Schwefelsäure ohne Erwärmen bewirkt. SUBCLAIM Method according to claim, characterized in that the condensation in the second phase is effected with concentrated sulfuric acid without heating.
CH157246D 1930-02-07 1931-02-04 Process for the preparation of an acidic dye of the anthraquinone series. CH157246A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE157246X 1930-02-07
CH153489T 1933-11-10

Publications (1)

Publication Number Publication Date
CH157246A true CH157246A (en) 1932-09-15

Family

ID=25716224

Family Applications (1)

Application Number Title Priority Date Filing Date
CH157246D CH157246A (en) 1930-02-07 1931-02-04 Process for the preparation of an acidic dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH157246A (en)

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