CH176227A - Process for the preparation of an o-oxyazo dye. - Google Patents

Process for the preparation of an o-oxyazo dye.

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Publication number
CH176227A
CH176227A CH176227DA CH176227A CH 176227 A CH176227 A CH 176227A CH 176227D A CH176227D A CH 176227DA CH 176227 A CH176227 A CH 176227A
Authority
CH
Switzerland
Prior art keywords
dye
red
preparation
oxyazo
bath
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 CH176227A publication Critical patent/CH176227A/en

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Description

  

  Verfahren zur Herstellung eines     o-Ogyazofarbstoffes.            Nach    dem im Hauptpatent geschützten  Verfahren erhält man einen Wolle nach       dem        Einbad-Chromverfahren    echt färbenden  Farbstoff, wenn man     4-Nitro-6-chlor-2-          amino-l-oxybenzol        diazotiert    und mit     1-(2'-          N@iphthyl)-3-methyl-5-pyrazolon    - 6' -     sulfo-          säure    kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen Wolle nach dem     Einbad-Chrom-          verfahren    rotorange färbenden Farbstoff,  wenn man     1-(1'-Naphthyl)-3-methyl-5-pyra-          zolon-4'-sulfosä.ure    mit     diazotiertem    3     .4.6-          L'richlor-2-amino-l-oxybenzol    kuppelt.  



       Beispiel:     In eine Lösung von 31 Teilen     1-(1'-Naph-          thyl)-3-methyl-5-pyrazolon-4'-sulfosäure    und  25 Teilen Soda in etwa<B>1000</B> Teilen Wasser  läuft eine aus 21,3 Teilen 3. 4.     6-Triehlor-          2-amino-l-oxybenzol,    6,9 Teilen Natrium  nitrit und 25 Teilen Salzsäure von 12       B6     in etwa<B>500</B> Teilen Wasser hergestellte Di-         azoverbindung.    Nach beendeter Kombination  scheidet man den Farbstoff durch     Aussalzen     ab.

   Er bildet getrocknet ein rotbraunes Pul  ver, welches sich mit rotgelber Farbe in Was  ser löst und auf Wolle nach dem     Einbad-          Chromverfahren        rotorange    Färbungen von  guten Echtheitseigenschaften ergibt.



  Process for the preparation of an o-ogyazo dye. According to the process protected in the main patent, a dye that really dyes wool by the single-bath chromium process is obtained if 4-nitro-6-chloro-2- amino-1-oxybenzene is diazotized and 1- (2'- N @ iphthyl) - 3-methyl-5-pyrazolone - 6 '- sulfonic acid couples.



  As has now also been found, a red-orange dye is obtained by the single-bath chromium process if 1- (1'-naphthyl) -3-methyl-5-pyrazolone-4'-sulfonic acid is diazotized 3 .4.6- L'richlor-2-amino-1-oxybenzene couples.



       Example: One leaks into a solution of 31 parts 1- (1'-naphthyl) -3-methyl-5-pyrazolone-4'-sulfonic acid and 25 parts soda in about 1000 parts water 21.3 parts of 3.4.6-triehlor-2-amino-1-oxybenzene, 6.9 parts of sodium nitrite and 25 parts of hydrochloric acid of 12 B6 in about 500 parts of water. When the combination is complete, the dye is separated off by salting out.

   When dried, it forms a red-brown powder which dissolves in water with a red-yellow color and produces red-orange colorations with good fastness properties on wool using the single-bath chrome process.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines für das Einbad-Chromverfahren geeigneten Farb stoffes, dadurch gekennzeichnet, dass man 3.4.6-Trichlor-2-amino-l-oxybenzol diazo- tiert und mit 1-(1'-Naphthyl)-3-methyl-5- pyrazolon-4'-sulfosäure kuppelt. Der Farb stoff bildet trocken ein rotbraunes Pulver und färbt Wolle nach dem Einbad-Chrom- verfahren in rotorangen Tönen echt an. PATENT CLAIM: Process for the production of a dye suitable for the single bath chromium process, characterized in that 3.4.6-trichloro-2-amino-1-oxybenzene is diazo- tated and with 1- (1'-naphthyl) -3-methyl -5- pyrazolone-4'-sulfonic acid couples. When dry, the dye forms a red-brown powder and really dyes wool in red-orange tones using the single-bath chrome process.
CH176227D 1932-12-07 1933-08-05 Process for the preparation of an o-oxyazo dye. CH176227A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE176227X 1932-12-07
CH173738T 1933-08-05

Publications (1)

Publication Number Publication Date
CH176227A true CH176227A (en) 1935-03-31

Family

ID=25719407

Family Applications (1)

Application Number Title Priority Date Filing Date
CH176227D CH176227A (en) 1932-12-07 1933-08-05 Process for the preparation of an o-oxyazo dye.

Country Status (1)

Country Link
CH (1) CH176227A (en)

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