CH132502A - 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
CH132502A
CH132502A CH132502DA CH132502A CH 132502 A CH132502 A CH 132502A CH 132502D A CH132502D A CH 132502DA CH 132502 A CH132502 A CH 132502A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
phenonaphtosafranine
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 CH132502A publication Critical patent/CH132502A/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-äthylamino-5-methylbenzol-2-sulfosäure    mit       3-Diäthylisorosindulin-6,13-disulfosäure    der  Formel  
EMI0001.0005     
    kondensiert. Die entstandene     Phenonaphto-          safranindisulfosäure    enthält eine     Sulfogruppe     in     Orthostellung    zum     Safraninstickstoff    (16  Stellung), wodurch die vorzügliche Alkali  echtheit der Färbungen erreicht wird.  



  Der neue     Farbstoff    ist ein dunkles Pulver,  das in Wasser mit     grünstichigblauer    Farbe,    in konzentrierter Schwefelsäure grasgrün lös  lich ist.  



  <I>Beispiel:</I>  30 Teile     p-Sulfophenyl-2-naphtylamin     100     o/oig    werden mit 250 Teilen Alkohol und  26,6 Teilen     Nitrosodiäthylanilin    100     %ig    wäh  rend 12 Stunden am     Rückflusskühler    gekocht.  Man lässt erkalten, saugt bei 25 o ab und  wäscht mit etwas Alkohol nach. Das     3-Di-          äthylisorosindulin-13-monosulfosäur-e    wird mit  100 Teilen technischen     Bisulfits    nach dem  Verfahren der deutschen Patentschrift 102 458  in die     Disulfosäure    übergeführt.

   In die zirka  800 Volumenteile betragende Lösung gibt  man heiss 23,2 Teile     1-Amino-4-äthylamino-          5-methylbenzol-2-sulfosäur#e        100        %        in        150     Teilen Soda zu, kocht mehrere Stunden unter       Rückfluss,    bis eine Probe, in konzentrierter  Schwefelsäure gelöst,     reingrüne    Farbe zeigt.  



  Der mit Kochsalz ausgeschiedene und ge  trocknete     Farbstoff    färbt Wolle im sauren  Bade in     grünstichigblauen,    ruhigen Tönen      von vorzüglicher Licht- und     Alkaliechtheit.    Der     Farbstoff    entspricht der Konstitution  
EMI0002.0003     




  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-ethylamino-5-methylbenzene-2-sulfonic acid is mixed with 3-diethylisorosindulin-6,13-disulfonic acid of the formula
EMI0001.0005
    condensed. The resulting phenonaphthosafranine disulfonic acid contains a sulfo group in the ortho position to the safranine nitrogen (16 position), whereby the excellent alkali fastness of the dye is achieved.



  The new dye is a dark powder which is greenish-blue in water and grass-green in concentrated sulfuric acid.



  <I> Example: </I> 30 parts of p-sulfophenyl-2-naphthylamine 100% are boiled with 250 parts of alcohol and 26.6 parts of nitrosodiethylaniline 100% for 12 hours on the reflux condenser. It is allowed to cool, suctioned off at 25 o and washed with a little alcohol. The 3-diethylisorosindulin-13-monosulfonic acid is converted into the disulfonic acid with 100 parts of technical bisulfite by the process of German patent 102 458.

   23.2 parts of 1-amino-4-ethylamino-5-methylbenzene-2-sulfonic acid 100% in 150 parts of soda are added to the solution, which is about 800 parts by volume concentrated sulfuric acid, shows a pure green color.



  The dye, precipitated with table salt and dried, dyes wool in an acid bath in greenish blue, calm shades of excellent light and alkali fastness. The dye corresponds to the constitution
EMI0002.0003

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-A.niino-4-äthylamino-6-methylbenzol-2-sulfo- säure kondensiert mit 3-Diäthylisorosindulin- 6,13-disulfosäure der Konstitution EMI0002.0009 Die entstandene PhenonaphtosafranindisulFo- säure enthält eine Sulfogruppe in Orthostel- lung zum Safraninstickstoff (16-Stellung), Claim: Process for the preparation of a new dye, characterized in that 1-A.niino-4-ethylamino-6-methylbenzene-2-sulfonic acid is condensed with 3-diethylisorosindulin-6,13-disulfonic acid of the constitution EMI0002.0009 The resulting phenonaphtosafranin disulfonic acid contains a sulfo group in the ortho position to the safranin nitrogen (16 position), wo durch die vorzügliche Alkaliechtheit der Fär bungen erreicht wird. Der neue Farbstoff ist ein dunkles Pulver, das in Wasser mit grünatichigblauer Farbe, in konzentrierter Schwefelsäure grasgrün lös lich ist. where the excellent alkali fastness of the dyeing is achieved. The new dye is a dark powder that is greenish blue in water and grass green in concentrated sulfuric acid.
CH132502D 1927-01-31 1928-01-28 Process for the preparation of a dye of the phenonaphtosafranine series. CH132502A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE132502X 1927-01-31
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH132502A true CH132502A (en) 1929-04-15

Family

ID=25710345

Family Applications (1)

Application Number Title Priority Date Filing Date
CH132502D CH132502A (en) 1927-01-31 1928-01-28 Process for the preparation of a dye of the phenonaphtosafranine series.

Country Status (1)

Country Link
CH (1) CH132502A (en)

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