CH249021A - Process for the preparation of an ester type azo dye derivative. - Google Patents
Process for the preparation of an ester type azo dye derivative.Info
- Publication number
- CH249021A CH249021A CH249021DA CH249021A CH 249021 A CH249021 A CH 249021A CH 249021D A CH249021D A CH 249021DA CH 249021 A CH249021 A CH 249021A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- preparation
- ester type
- dye derivative
- oxy
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- 239000000987 azo dye Substances 0.000 title claims description 5
- 150000002148 esters Chemical class 0.000 title description 3
- 238000002360 preparation method Methods 0.000 title description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 8
- 239000000975 dye Substances 0.000 claims description 8
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid group Chemical group C(C1=CC=CC=C1)(=O)O WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 240000007817 Olea europaea Species 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000004552 water soluble powder Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines esterartigen Azofarbstoffderivates. j Gegenstand des vorliegenden Zusatz patentes ist ein Verfahren zur Herstellung eines esterartigen Derivates eines o ,ö -Dioxy- a,zofarbstoffes, dadurch gekennzeichnet,
dass der Azofarbstoff aus diazotiertem 1-Oxy-2- amino-4-nitrobenzo1 und 2-Oxy-6-methoxy- naphtalin in Gegenwart von Pyridin mit Benzoesä.ure-3-sulfochlorid verestert wird.
Das neue Farbstoffderivat bildet nach dem Aufarbeiten und Trocknen ein braunes, wasserlösliches Pulver. Es färbt Wolle nach dem Einbadverfahren in Gegenwart chrom abgebender Mittel in oliven Tönen.
<I>Beispiel:</I> 62 Teile Benzoesäure-3-sulfochlorid wer den in 270 Teilen Pyridin bei 50-60 ge löst. Bei 40-50 werden 34 Teile des Azo- farbstoffes aus diazotiertem 1-Oxy-2-amino- 4-nitrobenzol und 2-Oxy-6-methoxynaphtalin unter gutem Rühren zugegeben. Durch Probeentnahme kann die Veresterung ver folgt werden. Dieselbe ist beendet, wenn eine Probe beim Versetzen mit Wasser keine Fällung mehr gibt.
Dann wird das Pyridin im Vakuum abdestilliert, der Destillations- rückstand in etwa 500 Teilen Wasser gelöst und der Farbstoffester mit 100 Teilen Na triumchlorid ausgesalzen. Die Masse wird verrührt, bis das Farbstoffderivat gut fil- trierbar geworden ist. Hierauf wird abfil- triert und im Vakuum getrocknet.
Process for the preparation of an ester type azo dye derivative. j The subject of the present additional patent is a process for the production of an ester-like derivative of an o, ö -dioxy- a, zo dye, characterized in
that the azo dye is esterified from diazotized 1-oxy-2-amino-4-nitrobenzo1 and 2-oxy-6-methoxynaphthalene in the presence of pyridine with benzoic acid-3-sulfochloride.
The new dye derivative forms a brown, water-soluble powder after working up and drying. It dyes wool in olive tones using the single bath method in the presence of chrome-releasing agents.
<I> Example: </I> 62 parts of benzoic acid 3-sulfochloride are dissolved in 270 parts of pyridine at 50-60 ge. At 40-50, 34 parts of the azo dye from diazotized 1-oxy-2-amino-4-nitrobenzene and 2-oxy-6-methoxynaphthalene are added with thorough stirring. The esterification can be followed by taking a sample. This is over when a sample no longer gives any precipitation when it is mixed with water.
The pyridine is then distilled off in vacuo, the distillation residue is dissolved in about 500 parts of water and the dyestuff ester is salted out with 100 parts of sodium chloride. The mass is stirred until the dye derivative has become easy to filter. It is then filtered off and dried in vacuo.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH249021T | 1944-10-06 | ||
| CH244049T | 1945-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH249021A true CH249021A (en) | 1947-05-31 |
Family
ID=25728875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH249021D CH249021A (en) | 1944-10-06 | 1944-10-06 | Process for the preparation of an ester type azo dye derivative. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH249021A (en) |
-
1944
- 1944-10-06 CH CH249021D patent/CH249021A/en unknown
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