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CH128162A - 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
CH128162A
CH128162A CH128162DA CH128162A CH 128162 A CH128162 A CH 128162A CH 128162D A CH128162D A CH 128162DA CH 128162 A CH128162 A CH 128162A
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 CH128162A publication Critical patent/CH128162A/en

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Description

  

  Verfahren zur Darstellung eines     Farbstoffes    der     Phenonaphtosafraninreihe.       Es     wurde    gefunden, dass     ein.    neuer, wertvol  ler Farbstoff entsteht, wenn man     1-Amino-          5    -     methyl    - 4 -     monomethylanilin-    2 -     sulf        osäure     mit     3-Dimethylisorosindulin-1        #    6     #        12-trisulfo-          säure    der Formel  
EMI0001.0016     
         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 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     (1/z    Molekül) des Mono  natriumsalzes der     3-Dimethylisorosindulin-          1        #    6     #        12-trisulfosäure    und 20 Teile Natrium  azetat kristallisiert werden zusammen mit  einer Lösung von 11 Teilen     1-Amino-5-methyl-          4-rizonomethylanilin-2-sulfosäure    in 80 Teilen  Wasser und 3 Teilen Soda so lange gekocht,  bis eine Probe, in konzentrierter Schwefel  säure 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  
EMI0001.0041     




  Process for the preparation of a dye of the phenonaphtosafranine series. It was found that a. New, valuable dye is created when 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-1 # 6 # 12-trisulfonic acid of the formula
EMI0001.0016
         condensed. The

  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 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 (1 / z molecule) of the monosodium salt of 3-dimethylisorosindulin- 1 # 6 # 12-trisulfonic acid and 20 parts of sodium acetate are crystallized together with a Solution of 11 parts of 1-amino-5-methyl-4-rizonomethylaniline-2-sulfonic acid in 80 parts of water and 3 parts of soda boiled until a sample is 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
EMI0001.0041

Claims (1)

PATtNTANSPRÜ0H Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, da.P man 1-Amino-5-methyl-4-monomethylanilin- 2-sulfosäure kondensiert mit 3-Dimethyliso- rosindulin-1 # 6 # 12-trisulfosäure der Formel EMI0002.0010 Die entstandene Phenonaphtosafranintrisulfo- säure enthält eine Sulfogruppe in Ortho- stellung zum PATtNTANSPRÜ0H Process for the preparation of a new dye, characterized in that 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is condensed with 3-dimethylisosorosindulin-1 # 6 # 12-trisulfonic acid of the formula EMI0002.0010 The resulting phenonaphtosafranin trisulfonic acid contains a sulfo group in ortho position to the 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 konzentrier ter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bad licht- und alkaliecht blau färbt. Safranin nitrogen (-16 position), which is responsible for the excellent alkali fastness of the dye. The new dye is a dark powder that 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.
CH128162D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128162A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128162X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128162A true CH128162A (en) 1928-10-16

Family

ID=25710334

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128162D CH128162A (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) CH128162A (en)

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