CH128140A - 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
CH128140A
CH128140A CH128140DA CH128140A CH 128140 A CH128140 A CH 128140A CH 128140D A CH128140D A CH 128140DA CH 128140 A CH128140 A CH 128140A
Authority
CH
Switzerland
Prior art keywords
dye
phenonaphtosafranine
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 CH128140A publication Critical patent/CH128140A/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-          4-äthylbenzylanilin-2-sulfosäure    mit     3-Di-          äthylisorosindulin-1    .     6-disulfosäure    der For  mel  
EMI0001.0007     
    kondensiert.

   Die entstandene     Phenonaphto-          safranindisulfosäure    enthält     eine        Sulfogruppe     in     Orthostellung    zum     Safraninstiekstoff        (-16-          Stellung),    wodurch die vorzügliche Alkali  echtheit der Färbungen bedingt wird.  



  Der neue Farbstoff ist ein dunkles Pul  ver, das in Wasser mit blauer Farbe, in kon  zentrierter Schwefelsäure grasgrün löslich  ist.         Beispiel:     16 Teile     1-Ami.no-4-äthylbenzylanilin-2-          sulfosäure    werden mit 3,1 Teilen Soda in 100  Teilen Wasser siedend gelöst und 27,5 Teile       Mononatriumsalz    der     3-Diäthylisorosindulin-          1.6-,disulfosäure,    sowie 20 Teile Natrium  acetat kristallisiert in 200 Teilen Wasser bei  gefügt. Dann wird während 12 Stunden  unter     Rückfluss    gekocht, worauf eine Probe,  in konzentrierter Schwefelsäure gelöst, eine  rein grüne Farbe zeigt. Der Farbstoff wird  kalt mit wenig Kochsalz ausgefällt.

   Er färbt  aus schwach saurem Bade Seide     und    Wolle  in     alkali-,    walk- und lichtechtem Blauton.  Der Farbstoff entspricht der Konstitution:  
EMI0001.0025     




  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-4-ethylbenzylaniline-2-sulfonic acid is mixed with 3-diethylisorosindulin-1. 6-disulfonic acid of the formula
EMI0001.0007
    condensed.

   The resulting phenonaphthosafranine disulphonic acid contains a sulpho group in the ortho position to the saffron intensive substance (-16 position), which means that the dyeings are extremely 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. Example: 16 parts of 1-Ami.no-4-ethylbenzylaniline-2-sulfonic acid are dissolved with 3.1 parts of soda in 100 parts of boiling water and 27.5 parts of the monosodium salt of 3-diethylisorosindulin-1,6-, disulfonic acid, and 20 parts of sodium acetate crystallizes in 200 parts of water when added. It is then refluxed for 12 hours, whereupon a sample, dissolved in concentrated sulfuric acid, shows a pure green color. The dye is precipitated cold with a little common salt.

   It dyes silk and wool from weakly acidic baths in alkali, milled and lightfast blue tones. The dye corresponds to the constitution:
EMI0001.0025

Claims (1)

<B>PATENTANSPRUCH:</B> Z' erfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dal3 man 1-Amino-4-üthylbenzylanilin-2=sulfo- säure kondensiert mit 3-Diäthylisorosindulin- 1. 6-disulfosäure der Formel EMI0002.0007 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Orthostel- lung zum Safraninstickstoff (-16-Stellung), PATENT CLAIM: Z 'for the preparation of a new dye, characterized in that 1-amino-4-ethylbenzylaniline-2-sulfonic acid is condensed with 3-diethylisorosindulin-1,6-disulfonic acid of the formula EMI0002.0007 The resulting phenonaphtosafranine disulphonic acid contains a sulpho group in the ortho position to the safranine nitrogen (-16 position), wodurch -die vorzügliche Alkaliechtheit der Färbungen bedingt wird. Der neue Farbstoff ist ein dunkles Pulver, das in Wasser mit blauer Farbe, in konzentrierter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bade licht- und alkaliecht blau färbt. which - the excellent alkali fastness of the dyeings is caused. The new dye is a dark powder, which is soluble in water with a blue color, in concentrated sulfuric acid grass-green and dyes wool from acidic baths light and alkali-fast blue.
CH128140D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128140A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128140X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128140A true CH128140A (en) 1928-10-16

Family

ID=25710312

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128140D CH128140A (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) CH128140A (en)

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