CH166666A - 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
CH166666A
CH166666A CH166666DA CH166666A CH 166666 A CH166666 A CH 166666A CH 166666D A CH166666D A CH 166666DA CH 166666 A CH166666 A CH 166666A
Authority
CH
Switzerland
Prior art keywords
dye
oxyazo
preparation
parts
dioxyquinoline
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 CH166666A publication Critical patent/CH166666A/en

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Description

  

  Verfahren zur Herstellung eines     o-Oxyazofarbstoffes.       Nach dem durch das Hauptpatent ge  schützten Verfahren erhält man einen Wolle  in Gegenwart von Chrombeizen echt an  färbenden     Farbstoff,        wenn    man     4-Chlor-2-          diazo-l-oxybenzol-6-sulfosäure    mit     7.8-Benzo-          2.4-dioxychinolin    kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen Farbstoff mit ganz ähnlichen guten  Eigenschaften, wenn man     4-1Titro-2-diazo-l-          oxybenzol-6-sulfosäure    mit     5.6-Benzo-2.4-          dioxychinolin    kuppelt.  



       Beispiel:     23,4 Teile     4-Nitro-2-amino-l-oxybenzol-6-          sulfosäure    werden mit etwa 300 Teilen  Wasser     angeschlämmt    und nach Zusatz von  5 Teilen Salzsäure von 12       B6    mit 6,9 Tei  len     Natriumnitrit    bei<B>100</B>     diazotiert.    Die  fertige     Diazoverbindung    läuft in eine kalte  Lösung von 23 Teilen     5.6-Benzo-2.4-dioxy-          chinolin    und 6 Teilen     Natriumhydroxyd    in    etwa 500 Teilen Wasser. Nach beendeter  Kombination wird der     Farbstoff    in bekannter  Weise aufgearbeitet.

   Er stellt in trockenem  Zustand ein dunkles Pulver dar und färbt  Wolle nach dem     Einbad-Chromverfahren    in       granatfarbenen    Tönen von sehr guter Wasch  und     Walkechtheit    an.



  Process for the preparation of an o-oxyazo dye. According to the process protected by the main patent ge one obtains a wool in the presence of chrome stains really on coloring dye, if one couples 4-chloro-2-diazo-1-oxybenzene-6-sulfonic acid with 7.8-benzo-2,4-dioxyquinoline.



  As has now been further found, a dye with very similar good properties is obtained if 4-1-nitro-2-diazo-l-oxybenzene-6-sulfonic acid is coupled with 5,6-benzo-2,4-dioxyquinoline.



       Example: 23.4 parts of 4-nitro-2-amino-1-oxybenzene-6-sulfonic acid are slurried with about 300 parts of water and, after the addition of 5 parts of hydrochloric acid of 12 B6, with 6.9 parts of sodium nitrite at <B> 100 </B> diazotized. The finished diazo compound runs into a cold solution of 23 parts of 5.6-benzo-2.4-dioxyquinoline and 6 parts of sodium hydroxide in about 500 parts of water. When the combination is complete, the dye is worked up in a known manner.

   When dry, it is a dark powder and uses the single-bath chrome process to dye wool in garnet-colored shades of very good wash and milled fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Wolle nach dem Einbad-Chromverfahren in granat- farbenen Tönen von guter Walk- und Wasch echtheit und ausgezeichneter Lichtecbtheit anfärbenden Farbstoffes, dadurch gekennzeich net, dass man 4-Nitro-2-diazo-l-oxybenzol-6- sulfosäure mit 5.6-Benzo-2.4-dioxychinolin kuppelt. PATENT CLAIM: Process for the production of a wool by the single-bath chrome process in garnet-colored shades of good fulling and washing fastness and excellent lightness coloring dye, characterized in that 4-nitro-2-diazo-l-oxybenzene-6- sulfonic acid coupled with 5.6-benzo-2.4-dioxyquinoline.
CH166666D 1932-04-18 1932-11-11 Process for the preparation of an o-oxyazo dye. CH166666A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE166666X 1932-04-18
CH164201T 1932-11-11

Publications (1)

Publication Number Publication Date
CH166666A true CH166666A (en) 1934-01-15

Family

ID=25717942

Family Applications (1)

Application Number Title Priority Date Filing Date
CH166666D CH166666A (en) 1932-04-18 1932-11-11 Process for the preparation of an o-oxyazo dye.

Country Status (1)

Country Link
CH (1) CH166666A (en)

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