CH133803A - Process for the preparation of a new azo dye. - Google Patents

Process for the preparation of a new azo dye.

Info

Publication number
CH133803A
CH133803A CH133803DA CH133803A CH 133803 A CH133803 A CH 133803A CH 133803D A CH133803D A CH 133803DA CH 133803 A CH133803 A CH 133803A
Authority
CH
Switzerland
Prior art keywords
red
azo dye
preparation
new azo
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH133803A publication Critical patent/CH133803A/en

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Description

  

  Verfahren zur Darstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man zu neuen  wertvollen     Azofarbstoffen    gelangt; wenn man  beliebige     Diazo-,        Tetrazo-        oder.Diazoverbin-          dungen    mit     2.3-Oxynaphthoyl-2'-amino.3'-          naphtholäthern    kombiniert.  



  Vorliegendes Patent bezieht sich auf ein  Verfahren zur Darstellung eines neuen     Azo-          farbstoffes,    dadurch gekennzeichnet, dass man  die     Diazoverbindung    von     5-Brom-1    .     2-toluidin     mit     2.3-Oxynaphthoyl-2'-amirio-3'-naphtbol-          methyläther    kombiniert.  



  Der so erhaltene     Azofarbstoff    der Formel:  
EMI0001.0017     
    ist ein leuchtend rotes Pulver, löslich in kon  zentrierter Schwefelsäure mit blaustichig rot-    violetter Farbe; er ist zur Herstellung wert  voller Farblacke geeignet und liefert, wenn  auf der vegetabilischen Faser erzeugt, blau  rote Färbungen von bemerkenswerter Reib  echtheit.

      <I>Beispiel</I>    18,6 Teile     5-Brom-1        .2-toluidin    werden  in 40     cm3    Salzsäure und 200 cm' Wasser  gelöst und nach dem Abkühlen auf     +    5 0  mit 7 Teilen     Natriumnitrit,    gelöst in 30 Teilen  Wasser,

       diazotiert.    Hierzu lässt man innerhalb  von 15     Minuten        eine-Lösung    von 36 Teilen       2.3-Oxynaphthoyl-2'.        3'-amiiionaphtholmethyl-          äther    in 25 Teilen Natronlauge 36       Bd    und  400 Teilen Wasser unter Zusatz von 2 Teilen       Türkischrotöl    und 6,8 Teilen     Natriumacetat     kristallisiert zulaufen. Der in üblicher Weise  isolierte Farbstoff wird zweckmässig in Pasten  form verwandt und zur Herstellung von  Farblacken auf den üblichen Substraten  gefällt.



  Process for the preparation of a new azo dye. It has been found that new valuable azo dyes are obtained; if any diazo, tetrazo or diazo compounds are combined with 2,3-oxynaphthoyl-2'-amino.3'-naphthol ethers.



  The present patent relates to a process for the preparation of a new azo dye, characterized in that the diazo compound of 5-bromo-1. 2-toluidine combined with 2,3-oxynaphthoyl-2'-amirio-3'-naphthobol methyl ether.



  The thus obtained azo dye of the formula:
EMI0001.0017
    is a bright red powder, soluble in concentrated sulfuric acid with a bluish red-violet color; it is suitable for the production of high-quality colored varnishes and, if produced on the vegetable fiber, delivers blue-red colorations of remarkable rub fastness.

      <I> Example </I> 18.6 parts of 5-bromo-1,2-toluidine are dissolved in 40 cm 3 of hydrochloric acid and 200 cm of water and, after cooling to + 50, with 7 parts of sodium nitrite, dissolved in 30 parts of water ,

       diazotized. For this purpose, a solution of 36 parts of 2,3-oxynaphthoyl-2 'is left within 15 minutes. 3'-Amiiionaphtholmethyl- ether in 25 parts of 36 Bd sodium hydroxide solution and 400 parts of water with the addition of 2 parts of Turkish red oil and 6.8 parts of sodium acetate crystallize. The dyestuff isolated in the usual way is expediently used in paste form and precipitated on the usual substrates for the production of colored lakes.

Claims (1)

PATtNTANSPRÜCH: Verfahren zur Darstellung eines neuen Azofarbstöffes; dadurch gekennzeichnet, däss man die Diazoverbindung- von 5o-Brom-1 . 2- toluidin mit 2-.3-Oxynaphthoyl-2'-amino-3'- naphtholmethyläther kombiniert. PATtNTANSPRÜCH: Method for the representation of a new azo dye; characterized in that the diazo compound of 5o-bromo-1. 2-toluidine combined with 2-.3-oxynaphthoyl-2'-amino-3'-naphthol methyl ether. Der so -erhaltene Farbstoff der Formel: EMI0002.0010 ist ein leuchtend rotes Pulver, löslich in kon zentrierter Schwefelsäure mit blaustichig rot- violetter.Farbe; er- ist zur Herstellung wert voller Farblacke geeignet und liefert; wenn auf der vegetabilischen Faser erzeugt, blau- -rote blau rote Färbungen von bemerkenswerter Reib echtheit.-- The so-obtained dye of the formula: EMI0002.0010 is a bright red powder, soluble in concentrated sulfuric acid with a bluish red-violet color; it is suitable for the production of valuable colored lacquers and supplies; if produced on the vegetable fiber, blue- -red blue-red colorations of remarkable rubbing fastness.
CH133803D 1926-12-31 1927-12-13 Process for the preparation of a new azo dye. CH133803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE133803X 1926-12-31

Publications (1)

Publication Number Publication Date
CH133803A true CH133803A (en) 1929-06-30

Family

ID=5665166

Family Applications (1)

Application Number Title Priority Date Filing Date
CH133803D CH133803A (en) 1926-12-31 1927-12-13 Process for the preparation of a new azo dye.

Country Status (1)

Country Link
CH (1) CH133803A (en)

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