CH128147A - Process for the preparation of a dye of the phenonaphtosafranine series. - Google Patents

Process for the preparation of a dye of the phenonaphtosafranine series.

Info

Publication number
CH128147A
CH128147A CH128147DA CH128147A CH 128147 A CH128147 A CH 128147A CH 128147D A CH128147D A CH 128147DA CH 128147 A CH128147 A CH 128147A
Authority
CH
Switzerland
Prior art keywords
phenonaphtosafranine
dye
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 CH128147A publication Critical patent/CH128147A/en

Links

Description

  

  Verfahren zur Darstellung eines     Farbstoffes    der     Phenonaphtosafraninreihe.       Es wurde gefunden, dass ein wertvoller,  neuer Farbstoff entsteht, wenn man     1-Amino-          5        -methyl-4-        monomethylanilin-    2 -     sulf        osäure     mit     3-Diäthylisorosindulin-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 kon  zentrierter Schwefelsäure     grün    löslich ist.    <I>Beispiel:</I>  11 Teile     1-Amino-5-methyl-4-monomethyl-          anilin-2-sulfosäure    werden mit 3 Teilen Soda  in 80 Teilen Wasser siedend gelöst und  27,5 Teile     Mononatriumsalz    der     3-Diäthyl-          isorosindulin-2.6-disulfosäure,    sowie 20  Teile     Natriumazetat    kristallisiert in 200 Tei  len Wasser beigefügt.

   Dann muss mehrere  Stunden unter     Rückfluss    gekocht werden,  bis eine gezogene Probe, in konzentrierter  Schwefelsäure gelöst, eine rein grüne Farbe       zeigt.    Der Farbstoff wird nach dem Ver  dünnen. auf     80;0    Teile mit Kochsalz aus  geschieden. Er färbt Wolle in saurem Bade  in ruhigen, licht- und     alkaliechtem    Blauton.  Die     Konstitution    ist folgende:  
EMI0001.0032     




  Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a valuable, new dye is created if 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is mixed with 3-diethylisorosindulin-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 soluble in blue water in water and green in concentrated sulfuric acid. <I> Example: </I> 11 parts of 1-amino-5-methyl-4-monomethyl-aniline-2-sulfonic acid are dissolved in 80 parts of boiling water with 3 parts of soda and 27.5 parts of the monosodium salt of 3-diethyl isorosindulin-2,6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added.

   Then it has to be refluxed for several hours until a drawn sample, dissolved in concentrated sulfuric acid, shows a pure green color. The dye will thin out after ver. to 80; 0 parts separated with table salt. He dyes wool in an acidic bath in a calm, light and alkali-fast blue shade. The constitution is as follows:
EMI0001.0032

Claims (1)

PATENTANSPRÜCII Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-5-methyl-4-monomethylanilin- 2-sulfosäure kondensiert mit 3-Diäthyliso- rosindulin-2. disulfosäure der Formel: PATENTANSPRÜCII Process for the preparation of a new dye, characterized in that 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is condensed with 3-diethylisosorosindulin-2. disulfonic acid of the formula: EMI0002.0007 Die entstandene Phenonaphtosafranindisulfo- sä.ure 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 grün löslich ist und Wolle aus saurem Bad licht- und alkaliecht blau färbt. EMI0002.0007 The resulting phenonaphtosafranine disulphonic acid contains a sulpho group ortho to the safranine nitrogen (-16 position), which means that the dyeings are extremely alkali-fast. The new dye is a dark powder that is blue in water and green in concentrated sulfuric acid, and it dyes wool from an acidic bath light and alkaline blue.
CH128147D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128147A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128147X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128147A true CH128147A (en) 1928-10-16

Family

ID=25710319

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128147D CH128147A (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) CH128147A (en)

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