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CH128148A - 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
CH128148A
CH128148A CH128148DA CH128148A CH 128148 A CH128148 A CH 128148A CH 128148D A CH128148D A CH 128148DA CH 128148 A CH128148 A CH 128148A
Authority
CH
Switzerland
Prior art keywords
acid
dye
phenonaphtosafranine
preparation
alkali
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 CH128148A publication Critical patent/CH128148A/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-          5-methyl-4-monoaethylanilin-2-sulfosäure    mit       3-Diaethylisorosindulin-2.6-disulfosäure    der  Formel  
EMI0001.0006     
    kondensiert.

   Die     endstandene        Phenonaphto-          safranindisulfosäure    enthält eine     Sulfogruppe     in     Orthostellung    zum     Safraninstickstoff        (-16-          Stellung),    wodurch die vorzügliche Alkali  echtheit der Färbungen bedingt wird.    Der neue     Farbstoff    ist ein dunkles Pulver,  das in Wasser mit blauer Farbe, in konzen  trierter Schwefelsäure grasgrün löslich ist.  



       Beispiel:     12 Teile     1-Amino-5-methyl-4-monoaethyl-          anilin-2-sulfosäure    werden mit 3 Teilen Soda  in 80 Teilen Wasser siedend gelöst und 27,5  Teile     Mononatriumsalz    der     3-Diaethylisoros-          indulin-2.6-disulfosäure,    sowie 20 Teile Na  triumazetat kristallisiert in 200 Teilen Wasser  beigefügt. Dann wird so lange unter     Rückfuss     gekocht, bis eine gezogene Probe, in konzen  trierter Schwefelsäure gelöst, eine rein-grüne  Farbe zeigt. Der Farbstoff wird darauf mit  Kochsalz ausgeschieden.

   Er färbt die anima  lische Faser aus saurem Bade licht- und     al-          kaliecht    blau. Seine Konstitution ist folgende:  
EMI0001.0025     




  Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a valuable, new dye is produced if 1-amino-5-methyl-4-monoethylaniline-2-sulfonic acid is mixed with 3-diaethylisorosindulin-2,6-disulfonic acid of the formula
EMI0001.0006
    condensed.

   The resulting phenonaphthosafranine disulphonic acid contains a sulpho group in the ortho position to the safranine 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, and in concentrated sulfuric acid it is grass-green.



       Example: 12 parts of 1-amino-5-methyl-4-monoethyl aniline-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 3-diaethylisorosindulin-2,6-disulfonic acid, as well 20 parts of sodium acetate crystallized in 200 parts of water were added. Then reflux is continued until a drawn sample, dissolved in concentrated sulfuric acid, shows a pure green color. The dye is then excreted with common salt.

   It dyes the animal fibers from acidic baths light- and alkali-like blue. Its constitution is as follows:
EMI0001.0025

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffs, dadurch gekennzeichnet, dass man 1-Amino-5-niethyl-4-monoaethylanilin -2-s ulfo- säure kondensiert mit 3-Diaethylisorosindulin- 2.6-disulfosäure der Formel: PATENT CLAIM: Process for the preparation of a new dye, characterized in that 1-amino-5-niethyl-4-monoethylaniline -2-sulfonic acid is condensed with 3-diaethylisorosindulin-2,6-disulfonic acid of the formula: EMI0002.0007 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Orthostel- lung zum Safraninstickstoff (-16-Stellung), wodurch die vorzügliche Alkaliechtheit 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 Bad licht- und alkaliecht blau färbt. EMI0002.0007 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 extremely fast to alkali. The new dye is a dark powder, which is soluble in water with a blue color, in concentrated sulfuric acid grass-green and dyes wool from an acid bath light and alkali-fast blue.
CH128148D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128148A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128148X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128148A true CH128148A (en) 1928-10-01

Family

ID=25710320

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128148D CH128148A (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) CH128148A (en)

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