CH128154A - 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
CH128154A
CH128154A CH128154DA CH128154A CH 128154 A CH128154 A CH 128154A CH 128154D A CH128154D A CH 128154DA CH 128154 A CH128154 A CH 128154A
Authority
CH
Switzerland
Prior art keywords
dye
phenonaphtosafranine
acid
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 CH128154A publication Critical patent/CH128154A/en

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Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Phenonaphtosafraninreihe.       Es wurde gefunden,     dass    ein neuer, wert  voller Farbstoff entsteht, wenn man     1-Amino-          4-diäl-hylanilin-2-sulfosäure    mit     3-Dimethyli-          sorosindulin-2.6-disulfosäure    der Formel  
EMI0001.0007     
    kondensiert.

   Die entstandene     Phenonaphto-          safranindisulfosäure    enthält eine     Sulfogruppe     in     Orthostellung    zum     Safraninstickstoff          (-16-Stellung),        wodurch    die vorzügliche Al  kaliechtheit 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.    <I>Beispiel:</I>  <B>12,5</B> Teile     1-Amino-4-diäthylanilin-2-sul-          fosäure    werden mit 3 Teilen Soda     in    80  Teilen Wasser siedend gelöst und hierauf 26  Teile     Mononatriumsalz    der     3-Dimethylisoros-          indulin-2.6-disulfosäure,    sowie 20 Teile       Natriumacetat    kristallisiert in 200 Teilen  Wasser     beigefügt.    Dann     wird    so lange ge  kocht, bis eine Probe, in konzentrierter  Schwefelsäure gelöst,

   eine rein grüne Farbe  zeigt. Man lässt erkalten und salzt den Farb  stoff aus. Er färbt aus saurem Bade die  animalische Faser     alkali-        und    lichtecht blau.  Seine Konstitution ist folgende:  
EMI0001.0027     




  Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a new, valuable dye is produced when 1-amino-4-di-al-ethylaniline-2-sulfonic acid is mixed with 3-dimethyl sorosindulin-2,6-disulfonic acid of the formula
EMI0001.0007
    condensed.

   The resulting phenonaphthosafranine disulphonic acid contains a sulpho group in the ortho position to the safranine nitrogen (-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. <I> Example: </I> <B> 12.5 </B> parts of 1-amino-4-diethylaniline-2-sulphonic acid are dissolved in 80 parts of boiling water with 3 parts of soda and then 26 parts of the monosodium salt 3-Dimethylisorosindulin-2,6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added. Then it is boiled until a sample, dissolved in concentrated sulfuric acid,

   shows a pure green color. Let it cool down and salt out the dye. It dyes the animal fibers from an acid bath, alkali and lightfast blue. Its constitution is as follows:
EMI0001.0027

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, da.ss man 1-Amino-4-diäthylanilin-2-sulfosäure kondensiert mit 3-Dimethylisorosindulin- 2. 6-disulfosäure der Formel EMI0002.0007 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Orthostel- lung zum Safraninstickstoff (-16-Stellung), Claim: Process for the preparation of a new dye, characterized in that 1-amino-4-diethylaniline-2-sulfonic acid is condensed with 3-dimethylisorosindulin-2. 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 is the reason for the excellent alkali fastness of the dyeings. 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.
CH128154D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128154A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128154X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128154A true CH128154A (en) 1928-10-16

Family

ID=25710326

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128154D CH128154A (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) CH128154A (en)

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