CH128151A - 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
CH128151A
CH128151A CH128151DA CH128151A CH 128151 A CH128151 A CH 128151A CH 128151D A CH128151D A CH 128151DA CH 128151 A CH128151 A CH 128151A
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 CH128151A publication Critical patent/CH128151A/en

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Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Phenonaphtosafraninreihe.       Es wurde     gefunden,    dass     ein    neuer, wertvol  ler Farbstoff entsteht, wenn man     1-Amino-          5    -     methyl    - 4 -     monomethylanilin    - 2 -     sulf        osäure     mit     3-Dimethylisorosindulin-2.6-disulfosäure     der Formel  
EMI0001.0011     
    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 in Wasser mit blauer Farbe, in       konzentrierter    Schwefelsäure grasgrün lös  lich ist.    <I>Beispiel</I>    11 Teile     1-Amino-5-methyl-4-monomethyl-          anilin-2-sulfosäure    werden gelöst in 3 Teilen  Soda und 80 Teilen Wasser, hierauf 26 Teile       Mononatriumsalz    der     3-Dimethylisorosindu-          lin-2.6-disuifosäure,    sowie 20 Teile     Na-          tiiumacetat    kristallisiert in 200 Teilen  Wasser beigefügt.

   Dann wird so lange un  ter     Rückfluss    gekocht, bis eine Probe, in       konzentrierter    Schwefelsäure gelöst, eine  rein grüne Farbe zeigt. Man     lässt    abkühlen  und fällt den Farbstoff unter Zugabe von  Salz. Der Farbstoff färbt die animalische  Faser in saurem Bade 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 formed when 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-2,6-disulfonic acid of the formula
EMI0001.0011
    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 particularly fast to alkali. becomes.



  The new dye is a dark powder that is blue in water and grass-green in concentrated sulfuric acid. <I> Example </I> 11 parts of 1-amino-5-methyl-4-monomethyl-aniline-2-sulfonic acid are dissolved in 3 parts of soda and 80 parts of water, followed by 26 parts of the monosodium salt of 3-dimethylisorosindulin-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 allowed to cool and the dye is precipitated with the addition of salt. The dye dyes the animal fiber in acidic bath light and alkali-fast blue. Its constitution is as follows:
EMI0001.0034

Claims (1)

PATENTANSPRÜCII Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, da13 man 1-Amino-5-methyl-4-monomethylanilin- 2-sulfosäure kondensiert mit 3-Dimethyliso- rosindulin-2.6-disulfosäure der Konstitution: PATENT APPLICATION Process for the preparation of a new dye, characterized in that 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is condensed with 3-dimethylisosorosindulin-2.6-disulfonic acid of the constitution: EMI0002.0008 Die entstandene Phenonaphtosafranindisulfo- eäure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (-16-Stel- lung), wodurch die vorzügliche Alkaliecht- heit der Färbungen bedingt wird. Der neue Farbstoff ist ein dunkles Pulver, das sich in Wasser mit blauer Farbe, in konzentrierter Schwefelsäure grasgrün löst und Wolle aus saurem Bade licht- und alkaliecht färbt. EMI0002.0008 The resulting phenonaphtosafranine disulphoic acid contains a sulpho group ortho to the safranine nitrogen (-16 position), which means that the dyeings are extremely alkaline. The new dye is a dark powder that dissolves in water with a blue color, in concentrated sulfuric acid grass-green and dyes wool from acidic baths light and alkali-fast.
CH128151D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128151A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128151X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128151A true CH128151A (en) 1928-10-01

Family

ID=25710323

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128151D CH128151A (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) CH128151A (en)

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