CH128158A - 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
CH128158A
CH128158A CH128158DA CH128158A CH 128158 A CH128158 A CH 128158A CH 128158D A CH128158D A CH 128158DA CH 128158 A CH128158 A CH 128158A
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 CH128158A publication Critical patent/CH128158A/en

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Description

  

      Verfahren    zur     Darstellung    eines Farbstoffes der     Phenonaphtosafraninreihe.       Es wurde gefunden, dass ein neuer, wert  voller Farbstoff entsteht, wenn man     1-Amino-          4-dimethylanilin-    2     -sulfosäure    mit 3 -     Di-          äthylisorosindulin-1.6.13-trisulfosäure    der  Formel  
EMI0001.0009     
         kondensiert.    Die entstandene     Phenonaphto-          safranintrisulfosäure    enthält eine     SuHo-          gruppe    in     Orthostellung    

  zum     Safraninstick-          stoff        (-16-Stellung),    wodurch die vorzüg  liche     Alkaliechtheit    der     Färbungen        bedingt          wird.    Der neue Farbstoff .ist ein dunkel  bronziges Pulver, das in Wasser mit blauer  Farbe, in konzentrierter     Schwefelsäure,    gras  grün löslich ist.

           Beispiel:     400 Teile einer wässerigen Lösung, ent  haltend 31,5 Teile     (1/-,        Mol.)    des Mono  natriumsalzes der     3-Diäthylisorosindulin-          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.

    Auf Zusatz von etwas Soda und Kochsalz  fällt der Farbstoff als     kupferiges    Pulver  aus. Er färbt die animalische Faser aus  saurem Bade     alkali-    und lichtecht blau. Seine  Konstitution ist folgende:  
EMI0001.0035     




      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-4-dimethylaniline-2-sulfonic acid is mixed with 3-diethylisorosindulin-1.6.13-trisulfonic acid of the formula
EMI0001.0009
         condensed. The resulting phenonaphthosafranin trisulfonic acid contains a SuHo group in the ortho position

  to safranine nitrogen (-16 position), which determines the excellent alkali fastness of the dyeings. The new dye is a dark bronze powder that is soluble in water with a blue color, in concentrated sulfuric acid, grass green.

           Example: 400 parts of an aqueous solution containing 31.5 parts (1 / -, Mol.) Of the monosodium salt of 3-diethylisorosindulin-1. 6th 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 is in concentrated sulfuric acid dissolved, shows a pure green color.

    When a little soda and table salt are added, the dye precipitates as a coppery powder. It dyes the animal fibers from acidic baths, alkali and lightfast blue. Its constitution is as follows:
EMI0001.0035

Claims (1)

PATRNTA-INTSPRUCFI Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-4-dimethylanilin-2-sulfosäure kondensiert mit 3 - Diäthylisorosindulin- 1 . 6. 13-trisulfosäure der Konstitution: PATRNTA-INTSPRUCFI Process for the preparation of a new dye, characterized in that 1-amino-4-dimethylaniline-2-sulfonic acid is condensed with 3-diethylisorosindulin-1. 6. 13-trisulfonic acid of the constitution: EMI0002.0008 Die entstandene Phenonaphtosafranintrisulfo- säure enthält eine @Sulfogruppe in Ortho- stellung zum Safraninstickstoff (-16-,Stel- lung), wodurch die vorzügliche Alkaliecht- heit der Färbungen bedingt wird. Der neue Farbstoff ist ein dunkelbronziges Pulver, das in Wasser mit blauer Farbe, EMI0002.0008 The resulting phenonaphtosafranin trisulphonic acid contains an @sulpho group ortho to the safranine nitrogen (-16-, position), which means that the dyeings are extremely alkaline. The new dye is a dark bronze powder, which in water turns blue, in konzen trierter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bade licht- und al- kaliecht blau färbt. is grass-green soluble in concentrated sulfuric acid and dyes wool from acidic baths light and alkaline blue.
CH128158D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128158A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128158X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128158A true CH128158A (en) 1928-10-16

Family

ID=25710330

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128158D CH128158A (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) CH128158A (en)

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