CH128143A - 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
CH128143A
CH128143A CH128143DA CH128143A CH 128143 A CH128143 A CH 128143A CH 128143D A CH128143D A CH 128143DA CH 128143 A CH128143 A CH 128143A
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 CH128143A publication Critical patent/CH128143A/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-          5-methyl-4-monoäthylanilin-2-sulfosäure    mit  3     -Dimethylisorosindulin-1.        6-disulfosäure    der  Formel  
EMI0001.0008     
         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     kupferiges    Pul  ver, das     in    Wasser mit blauer Farbe, in       konzentrierter    Schwefelsäure grasgrün lös  lich ist.    <I>Beispiel</I>  11,5 Teile     1-Amino-5-methyl-4-mono-          äthvlanilin-2-sulfosäure    werden mit 3 Tei  len     ySoda    in 80 Teilen Wasser siedend gelöst  und 26 Teile     Mononatriumsalz    der     3-Di-          methylisorosindulin-1.6-disulfosäure,    sowie  20 Teile     Natriumazetat    kristallisiert in 200       Teilen    Wasser beigefügt.

   Man kocht so lange  unter     Rückfluss,    bis eine gezogene Probe,  in     konzentrierter    Schwefelsäure gelöst, eine  rein     grüne    Farbe     zeigt.    Nach dem     Verdünnen     der Lösung auf 1500 Teile und Alkalisch  machen mit Soda wird der Farbstoff mit  Kochsalz ausgeschieden. Er färbt Wolle und  Seide aus saurem Bade in     alkali-    und licht  echten Blautönen. Der Farbstoff entspricht  der Konstitution:  
EMI0001.0037     




  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-5-methyl-4-monoethylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-1. 6-disulfonic acid of the formula
EMI0001.0008
         condensed. The resulting phenonaphthosafranine disulfonic acid contains a sulfo group in the ortho position to the

  Safranine nitrogen (-16 position), which determines the excellent alkali fastness of the dyeings.



  The new dye is a coppery powder that is blue-colored in water and grass-green in concentrated sulfuric acid. <I> Example </I> 11.5 parts of 1-amino-5-methyl-4-mono- äthvlanilin-2-sulfonic acid are dissolved with 3 parts of soda in 80 parts of boiling water and 26 parts of the monosodium salt of the 3-di- methylisorosindulin-1,6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added.

   It is refluxed until a drawn sample, dissolved in concentrated sulfuric acid, shows a pure green color. After diluting the solution to 1500 parts and making it alkaline with soda, the dye is eliminated with common salt. He dyes wool and silk from acid bath in alkaline and light blue tones. The dye corresponds to the constitution:
EMI0001.0037

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-1'. 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-1 '. 6-disulfonic acid of the formula: EMI0002.0006 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstiekstoff (-16-Stel- lung), wodurch die vorzügliche Alkaliecht- heit der Färbungen. bedingt wird. Der neue Farbstoff ist ein kupferiges Pulver, das in Wasser mit blauer Farbe, in konzentrierter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bad licht- und alkaliecht blau färbt. EMI0002.0006 The resulting phenonaphtosafranine disulphonic acid contains a sulpho group in the ortho position to the saffron instinct (-16 position), which gives the dyeings excellent alkali fastness. is conditioned. The new dye is a coppery powder, which 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.
CH128143D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128143A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128143X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128143A true CH128143A (en) 1928-10-16

Family

ID=25710315

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128143D CH128143A (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) CH128143A (en)

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