CH197281A - Process for the preparation of an o-oxyazo dye. - Google Patents
Process for the preparation of an o-oxyazo dye.Info
- Publication number
- CH197281A CH197281A CH197281DA CH197281A CH 197281 A CH197281 A CH 197281A CH 197281D A CH197281D A CH 197281DA CH 197281 A CH197281 A CH 197281A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- good
- preparation
- oxyazo
- parts
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title description 3
- 239000000975 dye Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 150000008049 diazo compounds Chemical class 0.000 claims description 4
- 210000002268 wool Anatomy 0.000 claims description 4
- 239000000987 azo dye Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- RWZYAGGXGHYGMB-UHFFFAOYSA-N anthranilic acid Chemical class NC1=CC=CC=C1C(O)=O RWZYAGGXGHYGMB-UHFFFAOYSA-N 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines o-Ogyazofarbstoffes. Es wurde gefunden, dass man zu Farb stoffen, die zum Färben von Wolle nach dem Einbad-Chromverfahren geeignet sind, gelangt, wenn man die Diazoverbindungen von solchen negativ substituierten 2-Amino- 1-oxybenzolen, die keine Sulfonsäure- oder Carbonsäuregruppe enthalten, oder von diazo- tierten 2 Amino-l-carboxybenzolen, mit Oxy- naphthalinsulfonsäurearyliden,
die im Arylid- rest durch eine Carboxylgruppe substituiert sind, kombiniert.
Die Farbstoffe zeichnen sich durch gutes Ziehvermögen nach dem Einbad-Chromver- fahren aus und ergeben auf Wolle Färbun gen, die eine gute Wasch- und Walkechtheit, sowie eine gute Lichtechtheit besitzen.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines o-Oxy- azofarbstoffes, welches dadurch gekennzeich net ist, dass man 4-Nitro-6-chlor-2-amino-l- oxybenzol diazotiert und die Diazoverbin- dung mit 2-Oxynaphthalin-6-sulfonsäure- anilid-2'-carbonsäure kuppelt.
<I>Beispiel:</I> 18,9 Teile 4-Nitro-6-chlor-2-amino-l-ogy- benzol werden mit 200 Teilen! Wasser an geschlämmt und nach Zusatz von 25 Teilen Salzsäure von 12 B6 mit 6,9 Teilen Na triumnitrit diazotiert. Die Diazoverbindung läuft zu einer mit Eis versetzten Auflösung von 35 Teilen 2-Oxynaphthalin-6-sulfon- säureanilid-2'-carbonsäure - und 25 Teilen Soda in etwa 1000 Teilen Wasser.
Nach beendeter Kombination wird der Farbstoff in üblicher Weise aufgearbeitet. Er bildet nach dem Trocknen ein dunkles Pulver von guter Löslichkeit, welches Wolle nach dem Einbad-Chromverfahren in violettbraunen Tönen von guter Wasch- und Walkechtheit und sehr guter Lichtechtheit anfärbt.
Process for the preparation of an o-ogyazo dye. It has been found that dyes which are suitable for dyeing wool by the single-bath chrome process are obtained if the diazo compounds of such negatively substituted 2-amino-1-oxybenzenes which contain no sulfonic acid or carboxylic acid group are used or of diazoated 2 amino-l-carboxybenzenes, with oxynaphthalenesulfonic acid arylides,
which are substituted in the arylide radical by a carboxyl group, combined.
The dyes are distinguished by their good drawability according to the single-bath chrome process and result in dyeings on wool that are washfast and boiled, as well as good lightfastness.
The subject of the present patent is a process for the preparation of an o-oxy azo dye, which is characterized in that 4-nitro-6-chloro-2-amino-l-oxybenzene is diazotized and the diazo compound is diazotized with 2-oxynaphthalene 6-sulfonic acid anilide-2'-carboxylic acid couples.
<I> Example: </I> 18.9 parts of 4-nitro-6-chloro-2-amino-1-ogy-benzene are combined with 200 parts! Slurried water and, after addition of 25 parts of hydrochloric acid of 12 B6, diazotized with 6.9 parts of sodium nitrite. The diazo compound leads to a solution, with ice, of 35 parts of 2-oxynaphthalene-6-sulfonic acid anilide-2'-carboxylic acid and 25 parts of soda in about 1000 parts of water.
When the combination is complete, the dye is worked up in the usual way. After drying, it forms a dark powder of good solubility, which colors wool using the single-bath chrome process in violet-brown shades of good wash and milled fastness and very good light fastness.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE197281X | 1936-01-17 | ||
| DE30636X | 1936-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH197281A true CH197281A (en) | 1938-04-30 |
Family
ID=25748828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH197281D CH197281A (en) | 1936-01-17 | 1936-11-04 | Process for the preparation of an o-oxyazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH197281A (en) |
-
1936
- 1936-11-04 CH CH197281D patent/CH197281A/en unknown
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