CH128142A - 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
CH128142A
CH128142A CH128142DA CH128142A CH 128142 A CH128142 A CH 128142A CH 128142D A CH128142D A CH 128142DA CH 128142 A CH128142 A CH 128142A
Authority
CH
Switzerland
Prior art keywords
acid
dye
phenonaphtosafranine
preparation
alkali
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 CH128142A publication Critical patent/CH128142A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Phenonaphtosafraninreihe.       Es wurde gefunden; dass ein wertvoller,  neuer     Farbstoff    entsteht, wenn man     1-Amino-          5-methyl-4-monomethylanilin-2-sulfosäure    mit       3-Dimethylisorosindulin-1A-disulfosäure    der  Formel  
EMI0001.0006     
    kondensiert.

   Die entstandene     Phenonaphtosa-          franindisulfosäure    enthält     ei e        Sulfogruppe     in     Orthostellung    zum     Safraninstickstoff        (-16-          Stellung),    wodurch die vorzügliche Alkali  echtheit der Färbungen bedingt wird.  



  Der neue     Farbstoff    ist ein     dunkelbronziges     Pulver, das in Wasser mit blauer Farbe, in  konzentrierter Schwefelsäure grasgrün löslich  ist.         Beispiel:     11 Teile     1-Amino-5-methyl-4-monomethyl-          anilin-2-sulfosäure    werden mit 3 Teilen Soda  in 80 Teilen Wasser siedend gelöst und 26  Teile     Mononatriumsalz    der     3-Dimethylisorosin-          dulin-1.        6-disulfosäure,    sowie 20 Teile     Natrium-          azetat    kristallisiert in 200 Teilen Wasser bei  gefügt.

   Dann muss mehrere Stunden unter       Rückfluss    gekocht werden, bis eine gezogene  Probe, in konzentrierter Schwefelsäure gelöst,  eine rein grüne Farbe zeigt.. Unter Rühren lässt  man abkühlen und fällt den     Farbstoff    durch       Zugabe.,von    Salz. Der     Farbstoff    färbt die ani  malische Faser aus saurem Bade     alkali-    und  lichtecht blau. Der     Farbstoff    hat folgende  Konstitution  
EMI0001.0032     




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

   The resulting phenonaphthosanine disulphonic acid contains a sulpho group in the ortho position to the safranin nitrogen (-16 position), which means that the dyeings are extremely fast to alkali.



  The new dye is a dark bronze powder that is soluble in water with a blue color, and in concentrated sulfuric acid it is grass-green. Example: 11 parts of 1-amino-5-methyl-4-monomethyl-aniline-2-sulfonic acid are dissolved with 3 parts of soda in 80 parts of boiling water and 26 parts of the monosodium salt of 3-dimethylisorosin-1. 6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water when added.

   Then it has to be refluxed for several hours until a drawn sample, dissolved in concentrated sulfuric acid, shows a pure green color. While stirring, it is allowed to cool and the dye is precipitated by the addition of salt. The dye dyes the ani malic fibers from an acid bath, alkali and lightfast blue. The dye has the following constitution
EMI0001.0032

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-5-methyl-4-rnonomethy lanilin-2-sulfo- säurekondensiertrnit 3-Dimethylisorosindulin- 1.6-disulfosäure der Formel: EMI0002.0006 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Orthostellung zum Safraninstickstoff (-16-Stellung), wodurch die vorzügliche Alkaliechtheit der Färbungen bedingt wird. PATENT CLAIM: Process for the preparation of a new dye, characterized in that 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is condensed with 3-dimethylisorosindulin-1,6-disulfonic acid of the formula: EMI0002.0006 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 extremely fast to alkali. Der neue Farbstoff ist ein dunkelbronziges Pulver, das in Wasser mit blauer Farbe, in konzentrierter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bad licht- und alkaliecht blau färbt. The new dye is a dark 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.
CH128142D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128142A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128142X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128142A true CH128142A (en) 1928-10-16

Family

ID=25710314

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128142D CH128142A (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) CH128142A (en)

Similar Documents

Publication Publication Date Title
CH128142A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128154A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128151A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128137A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128144A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128146A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128148A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH124764A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128141A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128149A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128145A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128147A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128163A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128140A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128164A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128169A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128158A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128152A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128139A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128159A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128153A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128168A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128170A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH128166A (en) Process for the preparation of a dye of the phenonaphtosafranine series.
CH132503A (en) Process for the preparation of a dye of the phenonaphtosafranine series.