CH128166A - 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
CH128166A
CH128166A CH128166DA CH128166A CH 128166 A CH128166 A CH 128166A CH 128166D A CH128166D A CH 128166DA CH 128166 A CH128166 A CH 128166A
Authority
CH
Switzerland
Prior art keywords
acid
preparation
dye
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 CH128166A publication Critical patent/CH128166A/en

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Description

  

  Verfahren zur     Darstellung    eines Farbstoffes der     Phenonaphtosafraninreihe.       Es wurde gefunden,     daB    ein wertvoller,  neuer Farbstoff en     .steht,    wenn man     1-          Amino    -5-     methyl    -4-     monoäthylanilin    -2-     sulf        o-          säure    mit     3-Dimethylisorosindulin-1.6.13-          trisulfosäure    der Formel  
EMI0001.0014     
    kondensiert.

   Die     entstandene        Phenonaphto-          safranintrisulfosäure    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>  400 Teile einer wässerigen Lösung, ent  haltend 30 Teile (1/ Moleküle) des Mono  natriumsalzes der     3-Dimethylisorosindulin-          1.    6. 13 -     trisulfosäure    und 20 Teile Na  triumazetat kristallisiert werden zusam  men mit einer Lösung von 12 Teilen 1  Amino-5-methyl-4-monoäthylanilin-2-sulfo  säure in 80 Teilen Wasser und 3 Teilen Soda  so lange gekocht, bis eine Probe,     in    konzen  trierter Schwefelsäure gelöst, eine rein grüne  Farbe zeigt.

   Der mit Kochsalz ausgeschiedene  Farbstoff färbt     die    animalische Faser aus       saurem    Bade licht- und     alkaliecht    blau.  Seine Konstitution ist folgende:  
EMI0001.0034     




  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-dimethylisorosindulin-1.6.13-trisulfonic acid of the formula
EMI0001.0014
    condensed.

   The resulting phenonaphthosafranin trisulphonic 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 green in water and soluble in concentrated sulfuric acid - <I> Example: </I> 400 parts of an aqueous solution containing 30 parts (1 / molecule) of the mono sodium salt of 3-dimethylisorosindulin- 1. 6. 13 - trisulfonic acid and 20 parts of sodium acetate are crystallized together with a solution of 12 parts of 1 amino-5-methyl-4-monoethylaniline-2-sulfo acid in 80 parts of water and 3 parts Soda is boiled 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 bath light and alkaline light blue. Its constitution is as follows:
EMI0001.0034

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-5-methyl-4-monoäthylanilin- 2-sulfosäure kondensiert mit 3-Dimethyl- isorosindulin-1.6.13-trisulfosäure der For mel: PATENT CLAIM: Process for the preparation of a new dye, characterized in that 1-amino-5-methyl-4-monoethylaniline-2-sulfonic acid is condensed with 3-dimethyl-isorosindulin-1.6.13-trisulfonic acid of the formula: EMI0002.0006 Die entstandene j?henonaphtosafranintri- sulfosäure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff- (-16-Stel- lung), wodurch die vorzügliche Alkali echtheit der Färbungen bedingt wird. Der neue Farbstoff ist ein dunkles Pulver, das in Wasser mit blauer Farbe, EMI0002.0006 The j? Henonaphtosafranin trisulfonic acid that is formed contains a sulfo group in ortho position to the safranin nitrogen (-16 position), which determines the excellent alkali fastness of the dyeings. The new dye is a dark powder, which in water turns blue, in konzentxier- ter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bade licht- und alkali- echt blau färbt. is grass-green soluble in concentrated sulfuric acid and dyes wool from acid baths lightfast and alkali-fast blue.
CH128166D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128166A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128166X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128166A true CH128166A (en) 1928-10-16

Family

ID=25710338

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128166D CH128166A (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) CH128166A (en)

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