CH128138A - 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
CH128138A
CH128138A CH128138DA CH128138A CH 128138 A CH128138 A CH 128138A CH 128138D A CH128138D A CH 128138DA CH 128138 A CH128138 A CH 128138A
Authority
CH
Switzerland
Prior art keywords
acid
phenonaphtosafranine
dye
preparation
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 CH128138A publication Critical patent/CH128138A/en

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Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Phenonaphtosafraninreihe.       Es wurde gefunden, dass' ein wertvoller  neuer Farbstoff entsteht, wenn man     1-Amino-          4-dimethylanilin-2-sulfosäure    mit     3-Diäthyl-          isorosindulin-1.        6-disulfosäure    der Formel:

    
EMI0001.0007     
         kondensiert.    Die entstandene     Phenonaphto-          safranindisulfosäure    enthält eine     Sulfo-          gruppe    in     Orthostellung    zum     Säfraninstick-          stoff        (-16-Stellung),    wodurch die vorzüg  liche     Alkaliechtheit    der Färbungen bedingt.  wird.  



  Der neue Farbstoff bildet ein bronzieren  des Pulver, das in Wasser mit blauer Farbe,  in     konzentrierter    Schwefelsäure grasgrün  löslich ist.    <I>Beispiel:</I>  11 Teile     1-Amino-4-dimethylanilin-2-          sulfosäure    werden mit 3 Teilen Soda in  80 Teilen Wasser siedend gelöst und 27,5  Teile     1Vlononatxiumsalz    der     3-Diäthylisoros-          indulin-1.6-disulfosäure,    sowie 20 Teile       Natriumacetat    kristallisiert in 200 Teilen  Wasser beigefügt. Dann wird während 12  Stunden unter     Rückfluss    gekocht, worauf  eine Probe, in konzentrierter Schwefelsäure  gelöst, eine rein grüne Farbe zeigt.

   Nach  dem Abkühlen wird der Farbstoff     ausgesal-          zen.    Er färbt auf Wolle und Seide in sau  rem Bade ein ruhiges, licht- und     alkaliechtes     Blau. Der Farbstoff entspricht der Kon  stitution:  
EMI0001.0029     




  Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that 'a valuable new dye arises if 1-amino-4-dimethylaniline-2-sulfonic acid with 3-diethyl isorosindulin-1. 6-disulfonic acid of the formula:

    
EMI0001.0007
         condensed. The resulting phenonaphthosafranine disulphonic acid contains a sulpho group in the ortho position to the saffranine nitrogen (-16 position), which gives the dyeings excellent alkali fastness. becomes.



  The new dye forms a bronzing powder, which is soluble in water with a blue color, in concentrated sulfuric acid grass-green. <I> Example: </I> 11 parts of 1-amino-4-dimethylaniline-2-sulfonic acid are dissolved with 3 parts of soda in 80 parts of boiling water and 27.5 parts of 1-vlononium salt of 3-diethylisorosindulin-1,6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added. It is then refluxed for 12 hours, whereupon a sample, dissolved in concentrated sulfuric acid, shows a pure green color.

   After cooling, the dye is salted out. He dyes wool and silk in an acid bath a calm, light and alkali-fast blue. The dye corresponds to the constitution:
EMI0001.0029

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-4-dimethylanilin-2-sulfosäure kondensiert mit 3-Diäthylisorosindulin-1.6- disulfosäure der Formel: PATENT CLAIM: A 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-disulfonic acid of the formula: EMI0002.0004 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (-16-Stel- lung), -wodurch die vorzügliche Alkaliecht- heit der Färbungen bedingt wird. Der neue Farbstoff bildet ein bronzierendes Pulver, das in Wasser mit blauer Farbe, EMI0002.0004 The resulting phenonaphtosafranine disulphonic acid contains a sulpho group in ortho position to the safranine nitrogen (-16 position), which is the reason for the excellent alkali fastness of the dyeings. The new dye forms a bronzing powder, which in water turns blue, in konzentrier ter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bad licht- und alkaliecht blau färbt. is soluble in concentrated sulfuric acid, grass green, and wool from an acid bath dyes light and alkali-fast blue.
CH128138D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128138A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128138X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128138A true CH128138A (en) 1928-10-01

Family

ID=25710310

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128138D CH128138A (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) CH128138A (en)

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