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CH176226A - 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
CH176226A
CH176226A CH176226DA CH176226A CH 176226 A CH176226 A CH 176226A CH 176226D A CH176226D A CH 176226DA CH 176226 A CH176226 A CH 176226A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
oxyazo
bath
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 CH176226A publication Critical patent/CH176226A/en

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Description

  

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



  Wie nun     weiter    gefunden wurde, erhält  man einen ähnlichen, Wolle nach dem Ein  bad-Chromverfahren in     granatfarbenen    Tönen  anfärbenden Farbstoff, wenn man     4-Chlor-5-          nitro-2-ainino-1-oxybenzol        diazotiert    und mit       l.-(2'-Naplithyl)-3-methyl-5-pyrazolon-8'-sul-          fosäurekuppelt.     



  <I>Beispiel:</I>  Eine aus 18,9 Teilen     4-Chlor-5-nitro-2-          amino-l-oxybenzol,    6,9 Teilen     Natriumnitrit     und 25 Teilen Salzsäure von 12       B6        bereitete          Diazoverbindunb    wird zu einer kalten Lö  sung von 31 Teilen     1-(2'-Naphthyl)-3-methyl-          5-pyrazolan-8'-sulfosäure    und 25 Teilen Soda    in etwa 1500 Teilen Wasser     begeben.    Der  in üblicher Weise aufgearbeitete Farbstoff  ist getrocknet ein dunkles Pulver, welches in  Wasser mit roter Farbe löslich ist.

   Wolle  wird nach dem     Einbad-Chromverfahren    in       granatfarbenen    Tönen von guter Wasch- und       Walkechtheit        angefärbt.  



  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-l-oxybenzo.1 is diazotized and 1- (2'-naphthyl) - 3-methyl-5-pyrazolone-6'-sulfonic acid couples.



  As has now been found, a similar dye is obtained which dyes wool in garnet-colored shades by the one-bath chrome process if 4-chloro-5-nitro-2-ainino-1-oxybenzene is diazotized and l .- (2 ' -Naplithyl) -3-methyl-5-pyrazolone-8'-sulphonic acid coupled.



  <I> Example: </I> A diazo compound prepared from 18.9 parts of 4-chloro-5-nitro-2-amino-1-oxybenzene, 6.9 parts of sodium nitrite and 25 parts of hydrochloric acid of 12 B6 is converted into a cold solution solution of 31 parts of 1- (2'-naphthyl) -3-methyl-5-pyrazolane-8'-sulfonic acid and 25 parts of soda in about 1500 parts of water. The dye, worked up in the usual way, is dried, a dark powder which is soluble in water with a red color.

   Wool is dyed using the single-bath chrome process in garnet-colored tones with good wash and milled fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines fair das Einbad-Chromverfahren geeigneten Farb stoffes, dadurch gekennzeichnet, dass man 4- Chlor-5-nitro-2-amino-l-oxybenzol diazotiert und mit 1-(2'-Naphthyl)-3-methyl-5-pyrazo- lon-8'-sulfosäure kuppelt. Der Farbstoff bil det trocken ein dunkles Pulver und färbt Wolle nach dem Einbad-Chromverfahren in branatfarbenen Tönen echt an. PATENT CLAIM: Process for the production of a dyestuff suitable for the single bath chromium process, characterized in that 4-chloro-5-nitro-2-amino-1-oxybenzene is diazotized and with 1- (2'-naphthyl) -3-methyl -5-pyrazolone-8'-sulfonic acid couples. The dye forms a dark powder when dry and really dyes wool in shades of brown using the single-bath chrome process.
CH176226D 1932-12-07 1933-08-05 Process for the preparation of an o-oxyazo dye. CH176226A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE176226X 1932-12-07
CH173738T 1933-08-05

Publications (1)

Publication Number Publication Date
CH176226A true CH176226A (en) 1935-03-31

Family

ID=25719406

Family Applications (1)

Application Number Title Priority Date Filing Date
CH176226D CH176226A (en) 1932-12-07 1933-08-05 Process for the preparation of an o-oxyazo dye.

Country Status (1)

Country Link
CH (1) CH176226A (en)

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