CH128137A - 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
CH128137A
CH128137A CH128137DA CH128137A CH 128137 A CH128137 A CH 128137A CH 128137D A CH128137D A CH 128137DA CH 128137 A CH128137 A CH 128137A
Authority
CH
Switzerland
Prior art keywords
acid
phenonaphtosafranine
dye
preparation
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 CH128137A publication Critical patent/CH128137A/en

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Description

  

  Verfahren zur Darstellung eines     Farbstoffes    der     Phenonaphtosafraninreihe.       Es wurde gefunden,     daB'    ein wertvoller  neuer Farbstoff entsteht, wenn. man     1-Amino-          5        -methyl-4        -monomethylanilin-    2 -     sulfosäure     mit     3-Diäthylisorosindulin-1.6-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 bildet ein     bronziges     Pulver, das in Wasser mit blauer Farbe,  in     konzentrierter    Schwefelsäure grasgrün  löslich ist.    <I>Beispiel:</I>  11,0 Teile     1-Amino-5-methyl-4-mono-          methylanilin-2-sulfosäure    werden mit $ Tei  len Soda in 80 Teilen Wasser siedend gelöst  und 27,5 Teile     Mononatriumsalz    der     3-Di-          äthylisorosindulin    -1 .

   6 -     disulf        osäure,    sowie  20 Teile     Natriumacetat        krist.        in    200 Teilen       Wasser    beigefügt. Dann     muB    mehrere Stun  den unter     RückfluB    gekocht werden, bis     eine     gezogene Probe     in        konzentrierter    Schwefel  säure gelöst, eine rein grüne Farbe zeigt.  Unter Rühren     läBt    man abkühlen und fällt  hierauf den Farbstoff     durch    Zugabe von  Salz.

   Er färbt Wolle und Seide in saurem  Bade in     ruhigen,    reinen Tönen von vor  züglicher Licht- und     Alkaliechtheit.    Der  Farbstoff entspricht folgender     Konstitution:     
EMI0001.0044     




  Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a valuable new dye is produced when. 1-Amino-5-methyl-4-monomethylaniline-2-sulfonic acid with 3-diethylisorosindulin-1,6-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 forms a bronze powder that is soluble in water with a blue color, and in concentrated sulfuric acid it is grass-green. <I> Example: </I> 11.0 parts of 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid are dissolved in 80 parts of boiling water with $ parts of soda and 27.5 parts of the monosodium salt of the 3rd -Di- äthylisorosindulin -1.

   6 - disulfonic acid, and 20 parts of sodium acetate crystall. added in 200 parts of water. It must then be refluxed for several hours until a sample taken, dissolved in concentrated sulfuric acid, shows a pure green color. The mixture is allowed to cool while stirring and the dye is then precipitated by adding salt.

   He dyes wool and silk in an acid bath in calm, pure tones that are extremely fast to light and alkali. The dye has the following constitution:
EMI0001.0044

Claims (1)

PATENTANSPRÜ0H: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-5-methyl-4-monomethylanilin- 2-sulfosäure kondensiert mit 3-Diäthyl- isorosindulin-1. 6-disulfosäure der Formel: PATENTANSPRÜ0H: Process for the preparation of a new dye, characterized in that 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is condensed with 3-diethyl isorosindulin-1. 6-disulfonic acid of the formula: EMI0002.0007 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (-16-Stel- lung), wodurch die vorzügliche Alkaliecht- 'beit der Färbungen bedingt wird. Der neue Farbstoff bildet ein bronziges Pulver, das in Wasser mit blauer Farbe, in konzentrier ter 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 causes the excellent alkali fastness of the dyeings. The new dye forms a bronze 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.
CH128137D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128137A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128137X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128137A true CH128137A (en) 1928-10-01

Family

ID=25710309

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128137D CH128137A (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) CH128137A (en)

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