CH148357A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH148357A CH148357A CH148357DA CH148357A CH 148357 A CH148357 A CH 148357A CH 148357D A CH148357D A CH 148357DA CH 148357 A CH148357 A CH 148357A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- acid
- milled
- azo dye
- wool
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 4
- 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 9
- 239000002253 acid Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 210000002268 wool Anatomy 0.000 claims description 4
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000008049 diazo compounds Chemical class 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines Azo- farbstoffes, dadurch gekennzeichnet, dass man die Monooxaminsäure des 4 . 4' - Diamino- 3 . 3' - dimethyldiphenyl -1 .1' - cyklohexaris dianotiert und mit 1- (p-Toluolsulfo-amino)- 8 - naphthol - 3 . 6 - disulfosäure kuppelt.
Der so erhaltene Farbstoff bildet nach dem Isolieren und Trocknen ein dunkles, braunrotes Pulver, das sich leicht in Wasser löst und Wolle aus saurem Bade in leuch tenden, blaustichig roten Tönen von sehr guter Wasch-, Walk- und Lichtechtheit an färbt.
Der Farbstoff lässt sich durch Behandeln mit verseifenden Mitteln in einen andern überführen, dessen Diazoverbindung sich mit beliebigen Kupplungskomponenten vereinigen lässt und beispielsweise beim Kuppeln mit 2. 8 - Dioxynaphthaldn - 6 - sulfosäure einen Disazofarbstoff liefert, der Wolle in gelbe- ren, walk- urid lichtechten Tönen anfärbt.
Beispiel: 36,6 Teile Monooxaminsäure des 4.4'- Diamino - 3 . 3'- dimethyldiphenyl -1.1'- cyklo- hexans werden lin Wasser mit der nötigen Menge Ammoniak unter Erwärmen gelöst. Unter Kühlung wird eine konzentrierte wäs serige Lösung von 6,9 Teilen Natriumnitrit und dann 52 Teile Salzsäure vom spez. Gew 1,16 auf einmal hinzugegeben.
Die Diazo- verbändung scheidet sich zum Teil aus. Zur Beendigung der Dianotierung rührt man noch kurze Zeit nach und lässt dann unter Eis kühlung die Diazotierungsflüssigkeit in eine überschüssige Soda enthaltende Lösung von 48 Teilen 1-(p-Toluolsulfo-amino)-8-naphthol- 3. 6 - disulfosäure einlaufen. Die Farbstoff bildung ist bald beendet.
Process for the preparation of an azo dye. The present patent relates to a process for the production of an azo dye, characterized in that the monooxamic acid of the 4th 4 '- diamino- 3. 3 '- dimethyldiphenyl -1 .1' - cyklohexaris dianotized and with 1- (p-toluenesulfo-amino) - 8 - naphthol - 3. 6 - disulfonic acid couples.
After isolation and drying, the dye thus obtained forms a dark, brown-red powder which dissolves easily in water and dyes wool from an acid bath in luminous, bluish red shades of very good wash, milled and lightfastness.
The dye can be converted into another by treating it with saponifying agents, the diazo compound of which can be combined with any coupling components and, for example, when coupling with 2.8 - dioxynaphthalene - 6 - sulfonic acid, yields a disazo dye that turns wool into yellowish milluride stains lightfast tones.
Example: 36.6 parts of monooxamic acid of 4.4'-diamino - 3. 3'-dimethyldiphenyl -1.1'-cyclohexane are dissolved in water with the necessary amount of ammonia while warming. With cooling, a concentrated aqueous solution of 6.9 parts of sodium nitrite and then 52 parts of hydrochloric acid of the spec. Weight 1.16 added all at once.
The diazo association is partially eliminated. To end the dianotation, stirring is continued for a short time and the diazotization liquid is then allowed to run under ice cooling into a solution of 48 parts of 1- (p-toluenesulfo-amino) -8-naphthol-3. 6 - disulfonic acid containing excess soda. The dye formation will soon end.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE148357X | 1928-08-28 | ||
| CH144864T | 1929-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH148357A true CH148357A (en) | 1931-07-15 |
Family
ID=25714549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH148357D CH148357A (en) | 1928-08-28 | 1929-08-22 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH148357A (en) |
-
1929
- 1929-08-22 CH CH148357D patent/CH148357A/en unknown
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