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CH128168A - Process for the preparation of a dye of the phenonaphtosafranine series. - Google Patents

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

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Publication number
CH128168A
CH128168A CH128168DA CH128168A CH 128168 A CH128168 A CH 128168A CH 128168D A CH128168D A CH 128168DA CH 128168 A CH128168 A CH 128168A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
acid
phenonaphtosafranine
series
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH128168A publication Critical patent/CH128168A/en

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Description

  

  Verfahren zur Darstellung     eines        Farbstoffes    der     Phenonaphtosafraninreihe.       Es wurde gefunden, dass ein neuer,  wertvoller Farbstoff entsteht, wenn man 1       Amino-5-methyl-4-monomethylanilin-2-sulfo-          säure    mit     3-Dimethylisorosindulin-2.    6. 13  trisulfosäure der Formel:  
EMI0001.0007     
    kondensiert.

   Die entstandene     Phenönaphto-          safranintrisulfosäure    enthält eine     Sulfo-          gruppe    in     Orthostellung    zum     Safraninstick-          stoff        (-16-Stellung),    wodurch die vorzüg  liche     Alkaliechtheit    der Färbungen     bedingt     wird.  



  Der neue Farbstoff ist ein dunkles Pul  ver, das in Wasser mit blauer Farbe, in  konzentrierter Schwefelsäure grasgrün lös  lich ist.         Beispiel     200 Teile einer     wässerigen    Lösung,  enthaltend 30 Teile des Mononatrium  salzes der     3-Dimethylisorosindulin-2.    6. 13  trisulfosäure und 20 Teile     Natriumazetat     kristallisiert werden     zusammen    mit einer  Lösung von     1-Amino-5-methyl-4-mono-          methylanilin-2-sulfosäure    in 80 Teilen Was  ser und 3 Teilen Soda so lange gekocht,  bis eine Probe, in konzentrierter Schwefel  säure gelöst, eine rein grüne Farbe zeigt.

    Der mit Kochsalz ausgeschiedene Farbstoff  färbt die animalische Faser aus saurem Bade  licht- und     alkaliecht    blau. Seine Konstitu  tion ist folgende:  
EMI0001.0026     




  Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a new, valuable dye is produced if 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-2. 6. 13 trisulfonic acid of the formula:
EMI0001.0007
    condensed.

   The phenoenaphthosafranin trisulphonic acid formed contains a sulpho group in the ortho position to the safranine nitrogen (-16 position), which means that the dyeings are particularly fast to alkali.



  The new dye is a dark powder that is blue in water and grass-green in concentrated sulfuric acid. Example 200 parts of an aqueous solution containing 30 parts of the monosodium salt of 3-dimethylisorosindulin-2. 6. 13 trisulfonic acid and 20 parts of sodium acetate are crystallized together with a solution of 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid in 80 parts of water and 3 parts of soda boiled until a sample is in concentrated sulfuric acid dissolved, shows a pure green color.

    The dyestuff excreted with common salt dyes the animal fibers from acidic bath light and alkaline light blue. Its constitution is as follows:
EMI0001.0026

Claims (1)

PATNN'fiANSP$UCIi: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-5-methyl-4-monomethylanilin- 2-sulfosäure kondensiert mit 3-Dimethyl- isorosindulin-2.6.13-trisulfosäure der For mel: PATNN'fiANSP $ UCIi: Process for the preparation of a new dye, characterized in that 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is condensed with 3-dimethyl-isorosindulin-2.6.13-trisulfonic acid of the formula: EMI0002.0006 Die entstandene Phenonaphtosafranintri- sulfosäure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (-16-Stel- lung), wodurch die vorzügliche Alkali echtheit der Färbungen bedingt wird. Der neue Farbstoff ist ein dunkles Pulver, das in Wasser mit blauer Farbe, in konzentrier ter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bade licht- und alkaliecht blau färbt. EMI0002.0006 The resulting phenonaphtosafranin trisulfonic acid contains a sulfo group in ortho position to the safranin nitrogen (-16 position), which determines the excellent alkali fastness of the dyeings. The new dye is a dark powder that is soluble in water with a blue color, in concentrated sulfuric acid, grass-green and dyes wool from acidic baths that are light- and alkali-fast blue.
CH128168D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128168A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128168X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128168A true CH128168A (en) 1928-10-16

Family

ID=25710340

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128168D CH128168A (en) 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series.

Country Status (1)

Country Link
CH (1) CH128168A (en)

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