CH128150A - 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
CH128150A
CH128150A CH128150DA CH128150A CH 128150 A CH128150 A CH 128150A CH 128150D A CH128150D A CH 128150DA CH 128150 A CH128150 A CH 128150A
Authority
CH
Switzerland
Prior art keywords
dye
phenonaphtosafranine
preparation
acid
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 CH128150A publication Critical patent/CH128150A/en

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Description

  

      Verfahren    zur Darstellung eines Farbstoffes der     Phenonaphtosafraninreihe.       Es     wurde    gefunden,     idass    ein neuer, wert  voller Farbstoff entsteht, wenn man     1-Amino-          4-diäthylanilin-2-sulfosäure    mit -     3-Diäthyl-          isorosindulin-2.        6-disulfosäure    der Formel:  
EMI0001.0010     
    kondensiert.

   Die entstandene     Phenonaphto-          safranindisulfosäure    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.    <I>Beispiel</I>  12,5 Teile     1-Amino-4-diäthylanilin-2-          sulfosäure    werden mit 3 Teilen Soda in  80 Teilen Wasser siedend     gelöst    und 27,5  Teile     Mononatriumsalz    der     3-DiätJiylisoros-          indulin-2.6-disulfosäure,    sowie 20 Teile       Natriumacetat    kristallisiert in 200 Teilen  Wasser beigefügt.

   Dann wird mehrere Stun  den unter     Rückfluss    gekocht, bis eine ge  zogene Probe, in     konzentrierter    Schwefel  säure gelöst, eine rein     grüne    Farbe     zeigt.     Der Farbstoff     wird    mit Kochsalz ausgeschie  den. Er färbt die animalische Faser aus sau  rem Bade licht- und     alkaliecht    blau. Seine  Konstitution ist folgende:  
EMI0001.0033     




      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-diethylaniline-2-sulfonic acid is mixed with - 3-diethyl-isorosindulin-2. 6-disulfonic acid of the formula:
EMI0001.0010
    condensed.

   The resulting phenonaphtosafranine disulphonic 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. <I> Example </I> 12.5 parts of 1-amino-4-diethylaniline-2-sulfonic acid are dissolved with 3 parts of soda in 80 parts of boiling water and 27.5 parts of the monosodium salt of the 3-diet jiylisoros-indulin-2,6-disulfonic acid , and 20 parts of sodium acetate crystallized in 200 parts of water added.

   It is then refluxed for several hours until a drawn sample, dissolved in concentrated sulfuric acid, shows a pure green color. The dye is excreted with table salt. It dyes the animal fibers from acidic baths that are light and alkaline blue. Its constitution is as follows:
EMI0001.0033

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-4-diäthylanilin-2-sulfosäure kondensiert mit 3-Diäthylisorosindulin-2. 6- disulfosäure der Formel: PATENT CLAIM: Process for the preparation of a new dye, characterized in that 1-amino-4-diethylaniline-2-sulfonic acid is condensed with 3-diethylisorosindulin-2. 6- disulfonic acid of the formula: EMI0002.0006 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 ist ein dunkles Pulver, das in Wasser mit blauer Farbe, in konzentrierter Schwefelsäure grasgrün löslich ist und Wolle aus saurem bade licht- und alkaliecht blau färbt. EMI0002.0006 The resulting phenonaphtosafranine disulphonic acid contains a sulpho group ortho to the safranine nitrogen (-16 position), which means that the dyeings are extremely alkaline. The new dye is a dark powder, which is soluble in water with a blue color, in concentrated sulfuric acid, grass-green, and which dyes wool from acidic bathing light and alkaline blue.
CH128150D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128150A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128150X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128150A true CH128150A (en) 1928-10-01

Family

ID=25710322

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128150D CH128150A (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) CH128150A (en)

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