CH132501A - 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
CH132501A
CH132501A CH132501DA CH132501A CH 132501 A CH132501 A CH 132501A CH 132501D A CH132501D A CH 132501DA CH 132501 A CH132501 A CH 132501A
Authority
CH
Switzerland
Prior art keywords
dye
acid
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 CH132501A publication Critical patent/CH132501A/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 -     methylbenzohl    - 2 -     sulfosäure     mit     3-Diäthylisorosindulin-6,12-disulfosäure     der Formel  
EMI0001.0010     
    kondensiert.

   Die entstandene     Phenonaphtosa-          franindisulfosäure    enthält eine     Sulfogruppe     in     Orthostellung    zum     Safraninstickstoff        (16-          Stellung),    wodurch die vorzügliche Alkali  echtheit der Färbungen erreicht wird.  



  Der neue     Farbstoff    ist ein dunkles Pul  ver, das in Wasser mit     grünstichig-blauer       Farbe,-in konzentrierter Schwefelsäure gras  grün löslich ist.  



       Beispiel:     30 Teile m -     Sulfophenyl    - 2 -     naphtylamin     100     %ig    werden mit 250 Teilen Alkohol und  26.6 Teilen     Nitrosodiäthylanilin   <B>100</B>     o/oig     während 12 Stunden am     Rückflusskühler    ge  kocht. Man lässt erkalten, saugt bei     251'    ab  und wäscht mit etwas Alkohol nach. Die       3-Diäthylisorosindulin-12-monosulfosäure    wird  mit 100 Teilen technischen     Bisulfits    nach  dem Verfahren der deutschen Patentschrift  102458 in die     Disulfosäure    übergeführt.

   In  die zirka 800 Volumenteile betragende Lö  sung gibt man nun siedend heiss 23.2 Teile       1-Amino-4-monoäthylamino-5-methylbenzol-2-          sulfosäure    100     o/oig    in 150 Teilen Wasser  und 5.5 Teilen Soda zu, kocht mehrere  Stunden unter     Rückfluss,    bis eine Probe, in  konzentrierter Schwefelsäure gelöst, rein-grüne  Farbe zeigt.      Der mit Kochsalz ausgeschiedene und ge  trocknete     Farbstoff    färbt Wolle im sauren  Bade in     grünstichig-blauen,    ruhigen Tönen    von vorzüglicher     .Licht-    und     Alkaliechtheit.     Der Farbstoff entspricht der Konstitution  
EMI0002.0005     




  Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a valuable new dye is produced when 1-amino-4-ethylamino-5-methylbenzene-2-sulfonic acid is mixed with 3-diethylisorosindulin-6,12-disulfonic acid of the formula
EMI0001.0010
    condensed.

   The resulting phenonaphtosanine disulphonic acid contains a sulpho group in the ortho position to the safranin nitrogen (16 position), which results in the excellent alkali fastness of the dyeings.



  The new dye is a dark powder that is soluble in water with a greenish-blue color, grass-green in concentrated sulfuric acid.



       Example: 30 parts of 100% m - sulfophenyl - 2 - naphthylamine are boiled with 250 parts of alcohol and 26.6 parts of nitrosodiethylaniline 100% for 12 hours on a reflux condenser. It is allowed to cool, suctioned off at 251 'and washed with a little alcohol. The 3-diethylisorosindulin-12-monosulphonic acid is converted into the disulphonic acid with 100 parts of technical bisulphite by the process of German patent 102458.

   23.2 parts of 1-amino-4-monoethylamino-5-methylbenzene-2-sulfonic acid 100% in 150 parts of water and 5.5 parts of soda are then added to the solution, boiling hot, and the mixture is refluxed for several hours, until a sample dissolved in concentrated sulfuric acid shows a pure green color. The dye, which is separated out 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
EMI0002.0005

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-4-äthylamino-5-methylbenzol-2-sulfo- säure kondensiert mit 3-Diäthylisorosindulin- 6, 12-disulfosäure der Konstitution EMI0002.0011 Die entstandene Phenonaphtosafranindisulfo- säure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (16-Stellung), PATENT CLAIM: Process for the preparation of a new dye, characterized in that 1-amino-4-ethylamino-5-methylbenzene-2-sulfonic acid is condensed with 3-diethylisorosindulin-6, 12-disulfonic acid of the constitution EMI0002.0011 The resulting phenonaphtosafranine disulphonic acid contains a sulpho group ortho to the safranine nitrogen (16 position), wodurch die vorzügliche Alkaliechtheit der Färbungen erreicht wird. Der neue Farbstoff ist ein dunkles Pulver, das in Wasser mit grünstichig-blauer Farbe, in konzentrierter Schwefelsäure grasgrün lös lich ist. whereby the excellent alkali fastness of the dyeings is achieved. The new dye is a dark powder that is greenish-blue in water and grass-green in concentrated sulfuric acid.
CH132501D 1927-01-31 1928-01-28 Process for the preparation of a dye of the phenonaphtosafranine series. CH132501A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE132499X 1927-01-31
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH132501A true CH132501A (en) 1929-04-15

Family

ID=25710343

Family Applications (2)

Application Number Title Priority Date Filing Date
CH132499D CH132499A (en) 1927-01-31 1928-01-28 Process for the preparation of a dye of the phenonaphtosafranine series.
CH132501D CH132501A (en) 1927-01-31 1928-01-28 Process for the preparation of a dye of the phenonaphtosafranine series.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH132499D CH132499A (en) 1927-01-31 1928-01-28 Process for the preparation of a dye of the phenonaphtosafranine series.

Country Status (1)

Country Link
CH (2) CH132499A (en)

Also Published As

Publication number Publication date
CH132499A (en) 1929-04-15

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