CH128141A - 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
CH128141A
CH128141A CH128141DA CH128141A CH 128141 A CH128141 A CH 128141A CH 128141D A CH128141D A CH 128141DA CH 128141 A CH128141 A CH 128141A
Authority
CH
Switzerland
Prior art keywords
dye
acid
preparation
phenonaphtosafranine
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 CH128141A publication Critical patent/CH128141A/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-\3-sulfosäure    mit     3-Di-          -11-        methylisorosindulin    -1 .     6-disulfo-          k        iithyl     säure der Formel  
EMI0001.0010     
    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 Pulver,  das in Wasser mit blauer Farbe, in konzen  trierter Schwefelsäure grasgrün löslich ist.    <I>Beispiel:</I>  16 Teile     1-Amino-4-äthylbenzylanilin-2-          sulfosäure    werden mit 3,1 Teilen Soda in 100  Teilen Wasser siedend gelöst und 28 Teile       Mononatriumsalz    der     3-Diäthyl-ll-methyli-          sorosindulin-1.        6-disulfos-äure,    sowie 20 Teile       Natriumazetat    kristallisiert in 200 Teilen  Wasser beigefügt. Dann wird während 12  Stunden unter     R,ückfluss    gekocht, worauf eine  Probe, in konzentrierter Schwefelsäure ge  löst, eine rein grüne Farbe zeigt.

   Der Farb  stoff lässt sieh gut     aussalzen.    Er färbt Wolle  aus schwach saurem Bade     alkali-,        walk-    und  lichtecht blau. Der Farbstoff entspricht der  Konstitution:  
EMI0001.0029     




  process for the preparation of a dye of the phenonaphtosafranin series. It has been found that a valuable, new dye is produced if 1-amino-4-ethylbenzylaniline- \ 3-sulfonic acid with 3-di- -11-methylisorosindulin -1. 6-disulphohydric acid of the formula
EMI0001.0010
    condensed.

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



  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> 16 parts of 1-amino-4-ethylbenzylaniline-2-sulfonic acid are dissolved with 3.1 parts of soda in 100 parts of boiling water and 28 parts of the monosodium salt of 3-diethyl-II-methylisorosindulin- 1. 6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added. It is then refluxed for 12 hours, whereupon a sample, dissolved in concentrated sulfuric acid, shows a pure green color.

   The dye lets you salt out well. It dyes wool from a weakly acidic bath blue, alkali-proof, mill-proof and light-fast. The dye corresponds to the constitution:
EMI0001.0029

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-4-äthylbenzylanilin-2-sulfo- sä.ure kondensiert mit 3-Diäthyl-11-methyl- isorosindulin-1. 6-disulfosäure der Formel EMI0002.0006 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (-16-Stel- lung), PATENT CLAIM: Process for the preparation of a new dye, characterized in that 1-amino-4-ethylbenzylaniline-2-sulfo-acid is condensed with 3-diethyl-11-methyl-isorosindulin-1. 6-disulfonic acid of the formula EMI0002.0006 The resulting phenonaphtosafranine disulphonic acid contains a sulpho group ortho to the safranine nitrogen (-16 position), wodurch die vorzügliche Alka.Iiecht- heit der Färbungen bedingt wird. Der neue Farbstoff ist ein dunkles Pulver, das in Was ser mit blauer Farbe, in konzentrierter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bade licht- und alkaliecht blau färbt. whereby the excellent alkalinity of the dyeings is conditioned. 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.
CH128141D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128141A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128141X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128141A true CH128141A (en) 1928-10-16

Family

ID=25710313

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128141D CH128141A (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) CH128141A (en)

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