CH177131A - Process for the preparation of an o-disazo dye. - Google Patents
Process for the preparation of an o-disazo dye.Info
- Publication number
- CH177131A CH177131A CH177131DA CH177131A CH 177131 A CH177131 A CH 177131A CH 177131D A CH177131D A CH 177131DA CH 177131 A CH177131 A CH 177131A
- Authority
- CH
- Switzerland
- Prior art keywords
- disazo dye
- preparation
- produced
- dye
- brown
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 2
- 239000000975 dye Substances 0.000 claims description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 150000008049 diazo compounds Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000758 substrate Substances 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 1
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical compound C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines o-DisazofarbstofFes. Gegenstand des vorliegenden Zusatzpaten tes ist ein Verfahren zur Herstellung eines o-Disazofarbstoffes, welches dadurch gekenn zeichnet ist, dass man die Diazoverbindung von 5-Methyl-4-methoxy-2-amino-2'. 4'-di- methyl -1 .<B>l'-</B> azobenzol mit 2. 3 - Oxynaph- thoylaminobenzol kuppelt. Die Einwirkung der beiden Komponenten aufeinander kann auch in Gegenwart eines Substrates erfolgen.
Der in Substanz hergestellte Farbstoff bildet ein braunes Pulver und liefert, wenn auf der Faser erzeugt, ein Rotbraun von sehr guter Wasch- und Chlorechtheit.
<I>Beispiel:</I> Die aus 2,7 kg 5-14Zethyl-4-methoxy-2- amino-2'. 4'-dimethyl-1. 1'-azobenzol in übli cher Weise dargestellte Diazoverbindung lässt man unter Rühren in eine wässerige Sus pension von 2,8 kg 2. 3-Oxynaphthoylamino- benzol, bereitet durch Auflösen dieses Ary- lides in Natronlauge und Wiederausfällen mit verdünnter Essigsäure, einlaufen. Der Farbstoff scheidet sich als brauner Nieder schlag aus. Er wird filtriert, gewaschen und getrocknet.
Die Herstellung des Farbstoffes kann auch in Gegenwart eines Substrates erfolgen. Wird der Farbstoff auf der Faser erzeugt, so erhält man ein Rotbraun von sehr guter Wasch- und Chlorechtheit.
Process for the preparation of an o-disazo dye. The subject of the present additional patent is a process for the production of an o-disazo dye, which is characterized in that the diazo compound of 5-methyl-4-methoxy-2-amino-2 '. 4'-dimethyl -1. <B> l'- </B> azobenzene couples with 2.3 - oxynaphthoylaminobenzene. The two components can also act on one another in the presence of a substrate.
The dyestuff produced in substance forms a brown powder and, if produced on the fiber, provides a reddish brown with very good washing and chlorine fastness.
<I> Example: </I> The one from 2.7 kg of 5-14Zethyl-4-methoxy-2-amino-2 '. 4'-dimethyl-1. 1'-azobenzene diazo compound, prepared in the usual way, is allowed to run into an aqueous suspension of 2.8 kg of 2. 3-oxynaphthoylamino-benzene, prepared by dissolving this arylide in sodium hydroxide solution and reprecipitating it with dilute acetic acid, with stirring. The dye separates out as a brown precipitate. It is filtered, washed and dried.
The dye can also be produced in the presence of a substrate. If the dye is produced on the fiber, the result is a reddish brown of very good fastness to washing and chlorine.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE177131X | 1933-02-02 | ||
| CH172367T | 1934-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH177131A true CH177131A (en) | 1935-05-15 |
Family
ID=25719201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH177131D CH177131A (en) | 1933-02-02 | 1934-01-30 | Process for the preparation of an o-disazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH177131A (en) |
-
1934
- 1934-01-30 CH CH177131D patent/CH177131A/en unknown
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