CH111278A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH111278A
CH111278A CH111278DA CH111278A CH 111278 A CH111278 A CH 111278A CH 111278D A CH111278D A CH 111278DA CH 111278 A CH111278 A CH 111278A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
acid
dye
mol
Prior art date
Application number
Other languages
German (de)
Inventor
Fabriken Vorm Friedr Bayer Co
Original Assignee
Vorm Friedr Bayer & Co Fab
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 Vorm Friedr Bayer & Co Fab filed Critical Vorm Friedr Bayer & Co Fab
Publication of CH111278A publication Critical patent/CH111278A/en

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Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Es würde gefunden, dass man     durch    Kup  peln der     Tetra.zoverbindung    von     4.4'-Di-          aminodiphenylharnsto@f    f- 3 . 3'     -dikarbonsäure     mit 1     Mol.        1-ss-Naphthyl-6'-sulfosäure-3-me-          thyl-5-pyrazolon    und mit 1     Mol.        Acetessig-o-          anisidid    zu einem neuen Farbstoff gelangt,  der bei einer Nachbehandlung auf der Faser  mit Metallsalzen sehr wasch- und     lichtechte          ;

  ;elborange    Färbungen liefert.   <I>Beispiel:</I>  330 Gewichtsteile     4.4'-Diaminodiph-enyl-          lia.rnstoff-3    .     3'-dika.rbonsäure    werden mit 138.       Gewichtsteilers        Natriumnitrit    und     Salzsäure     wie üblich     tetrazotiert,    darauf gibt man 306  Gewichtsteile     1-ss-Naphth.yl-6'-sulfosäure-3-          methyl-5-pyrazolon    in Wasser und wenig  Soda.

   gelöst, hinzu, macht mit     Natriumacetat     essigsauer und fügt nach Beendigung des  Zwischenproduktes 174 Gewichtsteile     Acet-          essig-o-anisidid    hinzu, macht mit Soda alka-    lisch. Nach Beendigung der Kuppelung fil  triert man den Farbstoff ab und trocknet.  Er stellt ein braunes Pulver dar, das Baum  wolle direkt orange anfärbt. Durch Nach  kupfern erhält man ein wasch- und licht  echtes     Gelhorange.  



  Process for the preparation of an azo dye. It has been found that by coupling the tetra-zo compound of 4,4'-di-aminodiphenyluresto @ f f-3. 3 '-dicarboxylic acid with 1 mole. 1-ss-naphthyl-6'-sulfonic acid-3-methyl-5-pyrazolone and with 1 mole. Acetoacetic-o-anisidide leads to a new dye which, when treated on the Fiber with metal salts is very washable and lightfast;

  ; elor-orange color provides. <I> Example: </I> 330 parts by weight of 4.4'-diaminodiph-enylia.rnstoff-3. 3'-dica.rboxylic acid are tetrazotized as usual with 138 parts by weight of sodium nitrite and hydrochloric acid, then 306 parts by weight of 1-ss-naphth.yl-6'-sulfonic acid-3-methyl-5-pyrazolone in water and a little soda are added.

   dissolved, added, makes acetic acid with sodium acetate and after completion of the intermediate product adds 174 parts by weight of acetoacetic-o-anisidide, makes alkaline with soda. After the coupling is complete, the dye is filtered off and dried. It is a brown powder that stains the cotton directly orange. After coppering, you get a real gelhorange that is washable and light.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Tetrazoverbindung von 4.4'-Diaminodiphe- nylharnstoff-3.3'-dikarbonsäure mit 1 Mol. 1- ss@-Na.p@hthyl-6'-sulf osäure-3-methyl-5-pyrazo- lon und mit 1 Mol. Acetessig-o-anisiclid kup pelt. PATENT CLAIM: Process for the preparation of an azo dye, characterized in that the tetrazo compound of 4.4'-diaminodiphenylurea-3.3'-dicarboxylic acid is mixed with 1 mol. 1- ss @ -Na.p @ hthyl-6'-sulfoic acid 3-methyl-5-pyrazolone and with 1 mol. Acetoacetic acid-o-anisiclid kup pelt. Der Farbstoff ist. ein braunes Pulver, das Baumwolle direkt orange anfärbt. Durch Nachkupfern erhält man ein wasch- und lichtechbes Gelborauge. The dye is. a brown powder that directly stains cotton orange. After copper plating, a washable and lightfast yellow eye is obtained.
CH111278D 1923-05-07 1924-04-22 Process for the preparation of an azo dye. CH111278A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE111278X 1923-05-07
CH110110T 1924-04-22

Publications (1)

Publication Number Publication Date
CH111278A true CH111278A (en) 1925-08-01

Family

ID=25707646

Family Applications (1)

Application Number Title Priority Date Filing Date
CH111278D CH111278A (en) 1923-05-07 1924-04-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH111278A (en)

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