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CH186176A - Process for the preparation of an acidic dye of the Safranin series. - Google Patents

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

Info

Publication number
CH186176A
CH186176A CH186176DA CH186176A CH 186176 A CH186176 A CH 186176A CH 186176D A CH186176D A CH 186176DA CH 186176 A CH186176 A CH 186176A
Authority
CH
Switzerland
Prior art keywords
series
preparation
safranin
acidic dye
sulfonic acid
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 CH186176A publication Critical patent/CH186176A/en

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

Description

  

  Verfahren zur Darstellung eines sauren     Farbstoffes    der     Safraninreihe.       Gegenstand des vorliegenden Patentes ist  ein     Verfahren    zur Darstellung eines sauren  Farbstoffes der     Safraninreihe.    Es ist dadurch  gekennzeichnet, dass man die     11-Methyldi-          äthylisorosindulin-l-sulfonsäure    mit     Bisulfit     in die entsprechende     1,6-Disulfonsäure    über  führt und diese mit     4-Aminomonocyclohexyl-          anilin-2-sulfonsäure    umsetzt.

           Beispiel:          1/1o        Kol    der nach bekannten Verfahren  hergestellten     11-1Methyldiätbylisorosindulin-l-          sulfonsäure    wird mit     Bisulfit    in die entspre  chende     1,6-Disulfonsäure    übergeführt und  diese in wässeriger Lösung unter Zusatz von       Natriumacetat    mit     11o        14Io14-Aminomonocyclo-          hexylanilin-2-sulfonsäure    erwärmt.

   Der er  haltene     Farbstoff    der Formel:  
EMI0001.0023     
    löst sich in konzentrierter Schwefelsäure grün,  in Wasser klar blau, und er färbt Wolle in  klaren blauen Tönen.



  Process for the preparation of an acidic dye of the Safranin series. The subject of the present patent is a process for the preparation of an acidic dye of the safranine series. It is characterized in that the 11-methyldiethylisorosindulin-1-sulfonic acid is converted with bisulfite into the corresponding 1,6-disulfonic acid and this is reacted with 4-aminomonocyclohexylaniline-2-sulfonic acid.

           Example: 1/10 col of 11-1Methyldietbylisorosindulin-l-sulfonic acid prepared by known processes is converted with bisulfite into the corresponding 1,6-disulfonic acid and this in aqueous solution with the addition of sodium acetate with 11o 14Io14-aminomonocyclohexylaniline-2- sulfonic acid heated.

   The obtained dye of the formula:
EMI0001.0023
    Dissolves green in concentrated sulfuric acid, clear blue in water, and dyes wool in clear blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Farbstoffes der Safraninreihe, dadurch ge- kennzeichnet, dass man die 11-Methyldiäthyl- isorosindulin-l-sulfonsäure mit Bisulfit in die entsprechende 1,6-Disulfonsäure überführt und diese mit 4-Aminomonocyclohegylanilin- 2-sulfonsäure umsetzt. Der erhaltene Farb- stoff löst sick in konzentrierter Schwefelsäure grün, in Wasser klar blau; und er färbt Wolle in klaren blauen Tönen. PATENT CLAIM: Process for the preparation of an acidic dye of the safranine series, characterized in that the 11-methyldiethyl isorosindulin-l-sulfonic acid is converted with bisulfite into the corresponding 1,6-disulfonic acid and this is reacted with 4-aminomonocyclohegylaniline-2-sulfonic acid . The dye obtained dissolves green in concentrated sulfuric acid, clear blue in water; and he dyes wool in clear blue tones.
CH186176D 1933-08-11 1934-01-12 Process for the preparation of an acidic dye of the Safranin series. CH186176A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE186176X 1933-08-11
CH174350T 1934-01-12

Publications (1)

Publication Number Publication Date
CH186176A true CH186176A (en) 1936-08-31

Family

ID=25719513

Family Applications (1)

Application Number Title Priority Date Filing Date
CH186176D CH186176A (en) 1933-08-11 1934-01-12 Process for the preparation of an acidic dye of the Safranin series.

Country Status (1)

Country Link
CH (1) CH186176A (en)

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