CH258765A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

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Publication number
CH258765A
CH258765A CH258765DA CH258765A CH 258765 A CH258765 A CH 258765A CH 258765D A CH258765D A CH 258765DA CH 258765 A CH258765 A CH 258765A
Authority
CH
Switzerland
Prior art keywords
new
preparation
monoazo dye
parts
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH258765A publication Critical patent/CH258765A/en

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Description

  

  Verfahren zur Herstellung eines neuen     Monoazofarbstoffes.       Die     vorliegende    Erfindung     betrifft    ein  Verfahren zur Herstellung eines neuen     Mono-          azofarbstoffes,    gemäss     welchem        diazotierter     m -     Aminophenyl        -ss-        oxyäthyläther,    2 -     Oxy-          diphenylenoxyd    und ein     Sulfatierungsmittel     miteinander     derart    umgesetzt werden,

   dass  die     Oxyäthylgruppe    in die     entsprechendie          Schwefelsäureestergruppe        übergeführt    wird       und    der     Diazo@rest    in     1-Stellung        des        Diphe-          nylenoxydkernes    tritt.  



  Der neue Farbstoff ist. ein braunes Pulver,       welühes    sich in Wasser unter Bildung einer       gelbliclrbraunen    Farbe und in     Schwefelsäure     unter Bildung einer karmesinroten     Lösunc          löst..     



  Die     Üiberführung    der     Oxyäthylgrupp.e     in die     entsprechen1eSchwefelsnureestergruppe     mit Hilfe des     Sülfatierungsmittels,    beispiels  weise     .mit    Hilfe von     Schwefelsäure,    kann vor  oder nach der Kupplung     erfolgen.     



  Die Methode zur     Numerierun.g    des     Di-          plienyloxydringaystems,    in dieser Beschrei  bung erfolgt nach      The    Ring Index;> von  A. M.     Patterson     &  L. T.     Capell    (Reinhold       Pizblishing        Corporation,    New York) 1940,  Seite 234, Nr.     1719,    d. h. das Sauerstoffatom       Evird    mit 5     bezeichnet.     



       Beispiel:     29,3 Teile     m-A#mi-nophenyl#-ss-oxyäthyl-          -Schwaftloäureester        werden    in 300     Tei-          a    äther         len    Wasser, enthaltend 25 Teile     316%ige     Salzsäure, durch Zugabe einer Lösung von       6;

  9    Teilen     Natriumnitrit    in     5f0,    Teilen     Wasser          ,diazotiert.    Die entstandene     Diazolösung    wird  unter Rühren einer     gekühlten    Lösung von  18,4 Teilen     2-Oxydiphenylenoxyd,    gelöst in  400 Teilen Wasser und 4 Teile Natrium  hydroxyd und 4,0 Teile wasserfreies Natrium  carbonat     enthaltend,    zugegeben.

   Nach be  endeter Kupplung versetzt man das Kupp  lungsgemisch mit 40 Teilen     Natriumohlorid     und rührt     während    3 Stunden.     Hierauf    wird  der     Farbstoff        abfiltriert,    mit Wasser     ge-          waschen    und getrocknet.



  Process for the preparation of a new monoazo dye. The present invention relates to a process for the preparation of a new monoazo dye, according to which diazotized m-aminophenyl-s-oxyethyl ether, 2-oxydiphenylene oxide and a sulfating agent are reacted with one another in such a way that

   that the oxyethyl group is converted into the corresponding sulfuric acid ester group and the diazo residue occurs in the 1-position of the diphenylene oxide nucleus.



  The new dye is. a brown powder which dissolves in water to form a yellowish-brown color, and in sulfuric acid to form a crimson-red solution.



  The conversion of the oxyethyl group into the corresponding sulfuric acid ester group with the aid of the sulphating agent, for example with the aid of sulfuric acid, can take place before or after the coupling.



  The method for numbering the Diplienyloxydringaystems, in this description is based on The Ring Index;> by A. M. Patterson & L. T. Capell (Reinhold Pizblishing Corporation, New York) 1940, page 234, no. 1719, d. H. the oxygen atom Ev is denoted by 5.



       Example: 29.3 parts of m-A # mi-nophenyl # -ss-oxyäthyl- -Schwaftloäureester in 300 parts of ether len water containing 25 parts of 316% hydrochloric acid, by adding a solution of 6;

  9 parts of sodium nitrite in 50 parts of water, diazotized. The resulting diazo solution is added with stirring to a cooled solution of 18.4 parts of 2-oxydiphenylene oxide dissolved in 400 parts of water and 4 parts of sodium hydroxide and 4.0 parts of anhydrous sodium carbonate.

   After coupling has ended, 40 parts of sodium chloride are added to the coupling mixture and the mixture is stirred for 3 hours. The dye is then filtered off, washed with water and dried.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Monoazofarbstoffes, dadurch gekennzeichnet, .dass diazotierter m-Amino-phenyl-ss-oxyäthyl- äther, 2L-Oxydiphenylenoxy4- und ,ein Sulfa- tierungsmittel miteinander derart umgesetzt werden, PATENT CLAIM: Process for the production of a new monoazo dye, characterized in that diazotized m-amino-phenyl-ss-oxyethyl ether, 2L-oxydiphenyleneoxy4- and a sulfating agent are reacted with one another in such a way that dass -die Oxyäthylgruppe in .die ent sprechende .Sehwefelsäureestergruppe über geführt wird und der Diazorest in 1-Stellung ,des Diphenylenoxyd@kernes tritt. Der neue Farbstoff ist ein braunes Pulver, welches sich in Wasser unter Bildung einer gelbliehbmaunen Farbe und in Schwefelsäure unter Bildung einer karmesinroten Lösung löst. that -the oxyethyl group in .die ent speaking .Sehulfuric acid ester group is passed and the diazo radical in the 1-position, the diphenylene oxide @ nucleus occurs. The new dye is a brown powder which dissolves in water to form a yellowish-brown color and in sulfuric acid to form a crimson-red solution.
CH258765D 1945-07-26 1946-07-25 Process for the preparation of a new monoazo dye. CH258765A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB258765X 1945-07-26
CH252531T 1946-07-25

Publications (1)

Publication Number Publication Date
CH258765A true CH258765A (en) 1948-12-15

Family

ID=25729631

Family Applications (1)

Application Number Title Priority Date Filing Date
CH258765D CH258765A (en) 1945-07-26 1946-07-25 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH258765A (en)

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