CH124764A - 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
CH124764A
CH124764A CH124764DA CH124764A CH 124764 A CH124764 A CH 124764A CH 124764D A CH124764D A CH 124764DA CH 124764 A CH124764 A CH 124764A
Authority
CH
Switzerland
Prior art keywords
acid
dye
preparation
alkali
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 CH124764A publication Critical patent/CH124764A/en

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Description

  

  verfahren     zur    Darstellung eines     Farbstoffes    der     Phenonaphtosafraninreihe.       Es wurde gefunden, dass' ein wertvoller  neuer Farbstoff     entsteht,    wenn man     1-Amino-          5-methyl-4-monoäthylanilin-2-sulfosäure    mit       3-Diäthylisorosindulin-1.6-disulfosäure    der  
EMI0001.0008     
  
    Formel: <SEP> S03 <SEP> H
<tb>  SOaH@@@N <SEP> @@@N < CzH;,       kondensiert.

   Die entstandene     Phenonaphto-          safranindisulfosäure    enthält eine     Sulfo-          gruppe    in     Orthostellung    zum     Safraninstick-          stoff        (-16-Stellung),    wodurch die vorzügliche       Alkaliechtheit    der Färbungen bedingt     wird.     



  Der neue Farbstoff bildet     ein    dunkel  bronziges, kristallinisches Pulver, das in    Wasser mit blauer Farbe, in konzentrierter  Schwefelsäure grasgrün löslich ist.    <I>Beispiel:</I>  11,5 Teile     1-Amino-5-methyl-4-mono-          äthylanilin-2-sulfosäure    werden mit 3 Teilen  Soda in 80 Teilen Wasser siedend gelöst  und 27,5 Teile     Mononatriumsalz    der     3-Di-          äthylisorosindulin-1.6-disulfosäure,

      sowie 20  Teile     Natriumacetat        krist.    in 200 Teilen Was  ser     beigefügt.    Dann muss mehrere Stunden  unter     Rückf        luss    gekocht werden, bis eine  gezogene Probe,. in     konzentrierter    Schwefel  säure gelöst, eine rein grüne Farbe     zeigt.     Unter Rühren wird abgekühlt und der Farb  stoff durch Zugabe von     Kochsalz    ausgefällt.  Er färbt auf Wolle und Seide im sauren Bade  ein ruhiges, licht- und     alkaliechtes    Blau. Der  Farbstoff entspricht folgender     Konstitution:     
EMI0001.0035     




  process for the preparation of a dye of the phenonaphtosafranin series. It has been found that 'a valuable new dye is created if you 1-amino-5-methyl-4-monoethylaniline-2-sulfonic acid with 3-diethylisorosindulin-1,6-disulfonic acid
EMI0001.0008
  
    Formula: <SEP> S03 <SEP> H
<tb> SOaH @@@ N <SEP> @@@ N <CzH ;, condensed.

   The resulting phenonaphthosafranine disulphonic acid contains a sulpho group in the ortho position to the safranine nitrogen (-16 position), which is the reason for the excellent alkali fastness of the dyeings.



  The new dye forms a dark, bronzy, crystalline powder that is soluble in water with a blue color and grass-green in concentrated sulfuric acid. <I> Example: </I> 11.5 parts of 1-amino-5-methyl-4-mono-ethylaniline-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 the 3- Diethylisorosindulin-1,6-disulfonic acid,

      and 20 parts of sodium acetate crystalline. in 200 parts of water included. It must then be refluxed for several hours until a sample is drawn. dissolved in concentrated sulfuric acid, shows a pure green color. The mixture is cooled while stirring and the dye is precipitated by adding sodium chloride. It dyes wool and silk in an acid bath a calm, light and alkali-fast blue. The dye has the following constitution:
EMI0001.0035

Claims (1)

PATENTANSPRUCH Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-5-methyl-4-monoäthylanilin-2- sulfosäure kondensiert mit 3-Diäthylisoros- indulin-1. 6-disulfosäure der Formel: 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-diethylisoros-indulin-1. 6-disulfonic acid of the formula: EMI0002.0007 Die entstandene Phenona.phtosafranindisulfo- säure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (-16-Stel- lung), wodurch die vorzügliche Alkali echtheit der Färbungen bedingt wird. EMI0002.0007 The resulting phenona.phtosafranine disulphonic acid contains a sulpho group ortho to the safranine nitrogen (-16 position), which means that the dyeings are extremely fast to alkali. Der neue Farbstoff bildet ein dunkelbronzi- ges, kristallinisches Pulver, das in Wasser mit blauer Farbe, in konzentrierter Schwefel säure grasgrün löslich ist und Wolle aus saurem Bad licht- und alkaliecht blau färbt. The new dye forms a dark bronze, crystalline powder, which is soluble in water with a blue color, in concentrated sulfuric acid grass green and which dyes wool from an acid bath light- and alkali-light blue.
CH124764D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH124764A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE124764X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH124764A true CH124764A (en) 1928-06-01

Family

ID=25710308

Family Applications (1)

Application Number Title Priority Date Filing Date
CH124764D CH124764A (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) CH124764A (en)

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