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CH128164A - 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
CH128164A
CH128164A CH128164DA CH128164A CH 128164 A CH128164 A CH 128164A CH 128164D A CH128164D A CH 128164DA CH 128164 A CH128164 A CH 128164A
Authority
CH
Switzerland
Prior art keywords
dye
acid
preparation
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 CH128164A publication Critical patent/CH128164A/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-Dimethyl-          isorosindulin-1-    6     #        12-trisulfosäure    der Formel  
EMI0001.0008     
    kondensiert.

   Die entstandene     Phenonaphto-          safranintrisulfosäure    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.  



  <I>Beispiel:</I>  400 Teile einer wässerigen Lösung, ent-    haltend 30 Teile ('/?,Molekül) des Mono  natriumsalzes der     3-Dimethylisorosindulin-          1    - 6 -     12-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 Wasser  und 3,1 Teilen Soda so lange gekocht, bis  eine .Probe, in konzentrierter Schwefelsäure  gelöst, eine rein grüne Farbe zeigt. Der mit  Kochsalz ausgeschiedene     Farbstoff    färbt die  animalische Faser aus saurem Bade     alkali-          und    lichtecht blau.

   Seine Konstitution ist  folgende  
EMI0001.0025     




  Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a new valuable dye is created when 1-amino-4-dimethylaniline-2-sulfonic acid is mixed with 3-dimethyl isorosindulin-1- 6 # 12-trisulfonic acid of the formula
EMI0001.0008
    condensed.

   The resulting phenonaphthosafranin trisulphonic acid contains a sulpho group in the 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, and in concentrated sulfuric acid it is grass-green.



  <I> Example: </I> 400 parts of an aqueous solution containing 30 parts ('/?, Molecule) of the monosodium salt of 3-dimethylisorosindulin-1-6-12-trisulfonic acid and 20 parts of sodium acetate are crystallized together Boiled 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 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 baths, alkali-proof and light-fast blue.

   Its constitution is as follows
EMI0001.0025

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-4-dimethylanilin-2-sulfosäure kondensiert mit 3-Dimethylisorosindulin- 1 # 6 # 12-trisulfosäure der Formel EMI0002.0008 Die entstandene Phenonaphtosafranintrisulfo- säure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (-16-Stel- <RTI Claim: 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 # 12-trisulfonic acid of the formula EMI0002.0008 The resulting phenonaphtosafranin trisulphonic acid contains a sulpho group ortho to the safranin nitrogen (-16-digit <RTI ID="0002.0016"> 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. ID = "0002.0016"> lung), which determines the excellent alkali fastness of the dyeings. 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 acidic baths light and alkali-fast blue.
CH128164D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128164A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128164X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128164A true CH128164A (en) 1928-10-16

Family

ID=25710336

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128164D CH128164A (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) CH128164A (en)

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