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CH128167A - 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
CH128167A
CH128167A CH128167DA CH128167A CH 128167 A CH128167 A CH 128167A CH 128167D A CH128167D A CH 128167DA CH 128167 A CH128167 A CH 128167A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
acid
series
phenonaphtosafranine
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 CH128167A publication Critical patent/CH128167A/en

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Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Phenonaphtocafraninreihe.       Es wurde gefunden, dass     ein    neuer,       wertvoller    Farbstoff entsteht, wenn man 1  Amino-4-dimethylanilin-2-suUosäure mit     3-          Dimethylisorosindulin-1.    6.13     -trisulf        osäure     der Formel:

    
EMI0001.0008     
         kondensiert.    Die entstandene     Phenonaphto-          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:     400 Teile einer wässerigen Lösung, ent  haltend 30 Teile     (i/    Moleküle) des Mono  natriumsalzes der     3-Dimethylisorosindulin-          1    . 6.     13-trisulfosäure    und 20 Teile Natrium  azetat kristallisiert werden zusammen mit  einer Lösung     von    12 Teilen     1-Amino-4-di-          methylanilin-2-sulfosäure    in 80 Teilen Was  ser und 3,1 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:  
EMI0001.0030     




  Process for the preparation of a dye of the phenonaphtocafranine series. It has been found that a new, valuable dye is produced if 1-amino-4-dimethylaniline-2-suUoic acid is mixed with 3-dimethylisorosindulin-1. 6.13 -trisulfonic acid of the formula:

    
EMI0001.0008
         condensed. The resulting phenonaphthosafranin trisulphonic acid 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: 400 parts of an aqueous solution containing 30 parts (i / molecules) of the monosodium salt of 3-dimethylisorosindulin-1. 6. 13-trisulfonic acid and 20 parts of sodium acetate are crystallized together with a solution of 12 parts of 1-amino-4-dimethylaniline-2-sulfonic acid in 80 parts of water and 3.1 parts of soda boiled until a sample , dissolved in concentrated sulfuric acid, 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:
EMI0001.0030

Claims (1)

1PATENTANSPRU(7H Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-4-dimethylanilin-2-sulfosäure kondensiert mit 3 - DimetJhylisorosindulin- 1 . 6. 13 - trisulfosäure der Formel: 1 PATENT APPLICATION (7H process for the preparation of a new dye, characterized in that 1-amino-4-dimethylaniline-2-sulfonic acid is condensed with 3-dimethylisorosindulin-1, 6. 13 -trisulfonic acid of the formula: EMI0002.0007 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. EMI0002.0007 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.
CH128167D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128167A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128167X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128167A true CH128167A (en) 1928-10-16

Family

ID=25710339

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128167D CH128167A (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) CH128167A (en)

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