CH128146A - 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
CH128146A
CH128146A CH128146DA CH128146A CH 128146 A CH128146 A CH 128146A CH 128146D A CH128146D A CH 128146DA CH 128146 A CH128146 A CH 128146A
Authority
CH
Switzerland
Prior art keywords
acid
dye
phenonaphtosafranine
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 CH128146A publication Critical patent/CH128146A/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-          methylisorosindulin-1.        6-disulfosäure    der For.  mel:  
EMI0001.0009     
    kondensiert.

   Die     entstandene        Phenonaphto-          safranindisulfosäure    enthält eine     Sulfo-          W        01        uppe        in        Orthostellung   <B>-</B>     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       konzentrierter    Schwefelsäure grasgrün löst.    <I>Beispiel:</I>  16 Teile     1-Amino-4-äthylbenzylanilin-2-          sulfosäure    werden mit 3 Teilen Soda in 100  Teilen Wasser siedend gelöst und 26 Teile       Mononatriumsalz    der     3-Dimethylisorosindu-          lin-1.        6-disulfosäure,        sowie    20 Teile Natrium  azetat kristallisiert in 200 Teilen Wasser  beigefügt. Man kocht solange unter Rück  fluss, bis eine gezogene Probe, in konzentrier  ter Schwefelsäure gelöst, eine rein grüne  Farbe zeigt.

   Man verdünnt auf 1500 Teile  und macht     sodaalkalisch.    Dann wird mit  Salz ausgeschieden und der harzige Kuchen  getrocknet. Der Farbstoff färbt die anima  lische Faser licht- und     alkaliecht    blau. Er  hat folgende     Konstitution:     
EMI0001.0035     




  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-dimethylisorosindulin-1. 6-disulfonic acid of For. mel:
EMI0001.0009
    condensed.

   The resulting phenonaphthosafranine disulphonic acid contains a sulpho-W 01 group in the ortho position <B> - </B> to the safranine nitrogen (-16 position), which ensures the excellent alkali fastness of the dyeings.



  The new dye is a dark powder that dissolves blue in water and grass green in concentrated sulfuric acid. <I> Example: </I> 16 parts of 1-amino-4-ethylbenzylaniline-2-sulfonic acid are dissolved with 3 parts of soda in 100 parts of boiling water and 26 parts of the monosodium salt of 3-dimethylisorosindulin-1. 6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added. The mixture is refluxed until a sample drawn, dissolved in concentrated sulfuric acid, shows a pure green color.

   It is diluted to 1500 parts and made alkaline with soda. Then it is excreted with salt and the resinous cake is dried. The dye dyes the animal fibers light and alkaline blue. He has the following constitution:
EMI0001.0035

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-4-äthylbenzylanilin-2-sulfo- säure kondensiert mit ä-Dimethylisorosin- dulin-1 . 6-disulfosäure der Konstitution: Claim to the patent: Process for the preparation of a new dye, characterized in that 1-amino-4-ethylbenzylaniline-2-sulfonic acid is condensed with α-dimethylisorosindulin-1. 6-disulfonic acid of constitution: EMI0002.0006 Die entstandene Phenonaphtosafranindisulfo- säure 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 konzentrier ter Schwefelsäure grasgrün löst und Wolle aus saurem Bad licht- und alkaliecht blau färbt. EMI0002.0006 The resulting phenonaphtosafranine disulphonic 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 an acid bath light and alkali-fast blue.
CH128146D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128146A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128146X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128146A true CH128146A (en) 1928-10-16

Family

ID=25710318

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128146D CH128146A (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) CH128146A (en)

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