CH174350A - 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.

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Publication number
CH174350A
CH174350A CH174350DA CH174350A CH 174350 A CH174350 A CH 174350A CH 174350D A CH174350D A CH 174350DA CH 174350 A CH174350 A CH 174350A
Authority
CH
Switzerland
Prior art keywords
series
acid
preparation
acidic dye
safranin
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 CH174350A publication Critical patent/CH174350A/en

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Description

  

  Verfahren zur Darstellung eines sauren     Farbstoffes    der     Safraninreihe.       Gegenstand des vorliegenden Patentes  ist ein Verfahren zur Herstellung eines sauren  Farbstoffes der     Safraninreihe.    Es ist dadurch  gekennzeichnet, dass man aus     4-Sulfophenyl-          f-naphthylamin    und     4-Aminodiäthylanilin-3-          sulfonsäure    hergestellte     Isorosindulin-1,

  13-          disulfonsäure    mit     Bisulfit    in die     1.6.13-          Trisulfonsäure    überführt und diese mit     4-          Aminodiphenylamin-2-sulfonsäure    umsetzt.

           Beispiel:       In üblicher Weise aus 32     gr        4-Sulfo-          plienyl-R-naphthylarniii    und<B>26,5</B>     gr        4-Amino-          diäthylanilin-3-sulfosäure    erhältliche     Isoros-          indulin-1.13-disulfonsäure    wird durch Be  handeln mit     Bisulfit    in die     Isorosindulin-          1.6.13-trisulfosäure    übergeführt;

   diese wird  in wässeriger Lösung mit 28     gr        4-Amino-          diphenylamin-2-sulfosäure    unter Zusatz von  20     gr        Natriumacetat        krist.    erwärmt. Der  erhaltene Farbstoff der wahrscheinlichen  Formel  
EMI0001.0033     
    kristallisiert beim Erkalten aus. Er löst sich  in Wasser grünstickig blau, in konzentrierter  Schwefelsäure grasgrün und färbt Wolle  licht- und waschecht in reinen grünstickig  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 isorosindulin-1, prepared from 4-sulfophenyl-f-naphthylamine and 4-aminodiethylaniline-3-sulfonic acid,

  13-disulfonic acid converted with bisulfite into the 1.6.13-trisulfonic acid and this is reacted with 4-aminodiphenylamine-2-sulfonic acid.

           Example: Isorosindulin-1.13-disulfonic acid, which can be obtained in the usual way from 32 g of 4-sulfoplienyl-R-naphthylarniii and 26.5 g of 4-amino-diethylaniline-3-sulfonic acid, is treated by Be converted into isorosindulin-1.6.13-trisulfonic acid with bisulfite;

   this is crystallized in aqueous solution with 28 g of 4-aminodiphenylamine-2-sulfonic acid with the addition of 20 g of sodium acetate. warmed up. The obtained dye of the likely formula
EMI0001.0033
    crystallizes on cooling. It dissolves greenish blue in water, grass green in concentrated sulfuric acid and dyes wool lightfast and washable in pure greenish blue tones.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines sauren Farbstoffes der Safraninreihe, dadurch ge kennzeichnet, dass man die aus 4-Sulfophenyl- ss-naphthylamin und 4-Aminodiäthylanilin-3- sulfonsäure hergestellte Isorosindulin-1.13- disulfonsäure mit $isulfit in die 1.6.13- Trisulfonsäure überführt und diese mit 4 Aminodiphenylamin-2-sulfonsäure umsetzt. PATENT CLAIM Process for the production of an acidic dye of the safranine series, characterized in that the isorosindulin-1.13-disulfonic acid produced from 4-sulfophenyl- ss-naphthylamine and 4-aminodiethylaniline-3-sulfonic acid is converted with isulfite into 1.6.13-trisulfonic acid and this is reacted with 4-aminodiphenylamine-2-sulfonic acid. Der Farbstoff löst sich in Wasser grün stichig blau, in konzentrierter Schwefelsäure grasgrün und färbt Wolle licht- und wasch echt in reinen grünstichig blauen Tönen. The dye dissolves in water with a green tinge of blue, in concentrated sulfuric acid grass green and dyes wool lightfast and washable in pure greenish blue tones.
CH174350D 1933-01-14 1934-01-12 Process for the preparation of an acidic dye of the Safranin series. CH174350A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE174350X 1933-01-14

Publications (1)

Publication Number Publication Date
CH174350A true CH174350A (en) 1935-01-15

Family

ID=5691307

Family Applications (1)

Application Number Title Priority Date Filing Date
CH174350D CH174350A (en) 1933-01-14 1934-01-12 Process for the preparation of an acidic dye of the Safranin series.

Country Status (1)

Country Link
CH (1) CH174350A (en)

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