CH128152A - 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
CH128152A
CH128152A CH128152DA CH128152A CH 128152 A CH128152 A CH 128152A CH 128152D A CH128152D A CH 128152DA CH 128152 A CH128152 A CH 128152A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
phenonaphtosafranine
new
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 CH128152A publication Critical patent/CH128152A/en

Links

Description

  

      Verfahren    zur Darstellung eines Farbstoffes der     Phenonaphtosafraninreihe.       Es wurde gefunden, dass ein neuer, wert  voller Farbstoff entsteht, wenn man     1-Amino-          5-methyl-4-monoäthylanilin-2-sulfosäure    mit       3-Dimethylisorosindulin-2.6-disulfosäure    der  Formel:  
EMI0001.0006     
    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 sich in Wasser mit blauer Farbe, in       konzentrireter    Schwefelsäure     grasgrün    löst.    <I>Beispiel:</I>  12 Teile     1-Amino-5-methyl-4-monoäthyl-          anilin-2-sulfosäure    werden in 3 Teilen Soda  und 80 Teilen Wasser siedend gelöst und  hierauf 26 Teile     Mononatriumsalz    der     3-Di-          methylisorosinduli.n-2.        6-disulfosäure,    sowie  20 Teile     Natriumacetat        kristallisiert    in 200  Teilen Wasser zugefügt.

   Dann     wird    so lange  unter     Rückfluss    gekocht, bis eine Probe, in  konzentrierter Schwefelsäure gelöst, eine  rein grüne Farbe zeigt. Man     läss't    abkühlen  und salzt den Farbstoff aus. Er färbt aus  saurem Bade die animalische Faser     licht-          und        alkaliecht    blau. Seine Konstitution ist  folgende:  
EMI0001.0034     




      Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a new, valuable dye is created when 1-amino-5-methyl-4-monoethylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-2,6-disulfonic acid of the formula:
EMI0001.0006
    condensed.

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



  The new dye is a dark powder which dissolves blue in water, and grass green in concentrated sulfuric acid. <I> Example: </I> 12 parts of 1-amino-5-methyl-4-monoethyl aniline-2-sulfonic acid are dissolved in 3 parts of soda and 80 parts of boiling water and then 26 parts of the monosodium salt of 3-dimethylisorosinduli .n-2. 6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added.

   Then it is refluxed until a sample, dissolved in concentrated sulfuric acid, shows a pure green color. It is left to cool and the dye is salted out. From an acidic bath he dyes the animal fibers light- and alkali-fast blue. Its constitution is as follows:
EMI0001.0034

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-5-methyl-4-monoäthylanilin- 2-sulfosäure kondensiert mit 3-Dimethyl- isorosindulin-2 . 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-dimethyl-isorosindulin-2. 6-disulfonic acid of the formula: EMI0002.0007 Die neue Phenonaphtosafranindinsulfosäure enthält eine Sulfogruppe in Orthostel- lung 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 grasgrün löslich ist und Wolle aus saurem Bade licht- und alkaliecht blau färbt. EMI0002.0007 The new phenonaphtosafranindine sulfonic acid contains a sulfo group in the ortho position to the safranine nitrogen (-16 position), which means that the dyeings are extremely alkaline. 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.
CH128152D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128152A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128152X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128152A true CH128152A (en) 1928-10-01

Family

ID=25710324

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128152D CH128152A (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) CH128152A (en)

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