CH249013A - 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
- CH249013A CH249013A CH249013DA CH249013A CH 249013 A CH249013 A CH 249013A CH 249013D A CH249013D A CH 249013DA CH 249013 A CH249013 A CH 249013A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- dye
- preparation
- ester type
- dye derivative
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- 239000000987 azo dye Substances 0.000 title claims description 4
- 150000002148 esters Chemical class 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
- 238000004519 manufacturing process Methods 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000001035 drying 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
- -1 azo carbate derivative Chemical class 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 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 Azofarbatoffderivates Gegenstand des, vorliegenden Zusatzpaten tes ist ein Verfahren zur Herstellung eines esterartigen Derivates eines o,o'-Dioxyazo- farbstoffes, dadurch gekennzeichnet,
dass der Azofarbstoff aus diazotiertem 1 - 0$y - 2 - amino-4-nitrobenzol und 2-Oxynaphtalin in Gegenwart von Pyridin mit Benzoesäure-3- sulfochlorid verestert wird.
Das neue Farbstoffderivat bildet na-eh dem Aufarbeiten und Trocknen ein gelb braunes, wasserlösliches Pulver. Es färbt Wolle nach dem Einbadverfahren in Gegen wart chromabgebender Mittel in braunen Tönen.
<I>Beispiel:</I> 62 Teile Benzoesäure-3-sulfochlarid wer den in 270 Teilen Pyridin bei 50 bis 60 gelöst. Bei 40 bis 50 werden 31 Teile des Azofarbstoffes aus diazotiertem 1- Oxy - 2 - amino - 4 - nitrobenzol und 2 - Ogynaphtalin unter gutem Rühren zugegeben. Durch Probeentnahme kann die Veresterung ver folgt werden. Dieselbe ist beendet, wenn eine Probe beim Versetzen mit Wasser keine Fäl- lung mehr gibt.
Dann wird das Pyridin im Vakuum abdestilliert, der Destillationsrück- stand in etwa 500 Teilen Wasser .gelöst und der Farbstoffester mit 100 Teilen Natrium chlorid ausgesalzen. Die Masse wird ver rührt, bis das Farbstoffderivat gut. filtrier- bar geworden ist. Hierauf wird abfiltriert und im Vakuum getrocknet.
Process for the production of an ester-like azo carbate derivative The subject of the present additional patent is a process for the production of an ester-like derivative of an o, o'-dioxyazo dye, characterized
that the azo dye from diazotized 1 - 0 $ y - 2 - amino-4-nitrobenzene and 2-oxynaphthalene is esterified with benzoic acid-3-sulfochloride in the presence of pyridine.
After working up and drying, the new dye derivative forms a yellow-brown, water-soluble powder. It dyes wool in brown shades using the single bath process in the presence of chromium-releasing agents.
<I> Example: </I> 62 parts of benzoic acid 3-sulfochlaride are dissolved in 270 parts of pyridine at 50 to 60 times. At 40 to 50, 31 parts of the azo dye from diazotized 1-oxy-2-amino-4-nitrobenzene and 2-ogynaphthalene are added with thorough stirring. The esterification can be followed by taking a sample. The same is ended when a sample no longer gives any precipitation when it is mixed with water.
Then the pyridine is distilled off in vacuo, the distillation residue is dissolved in about 500 parts of water and the dye ester is salted out with 100 parts of sodium chloride. The mass is stirred until the dye derivative is good. has become filterable. It is then filtered off and dried in vacuo.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH249013T | 1944-10-06 | ||
| CH244049T | 1945-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH249013A true CH249013A (en) | 1947-05-31 |
Family
ID=25728867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH249013D CH249013A (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) | CH249013A (en) |
-
1944
- 1944-10-06 CH CH249013D patent/CH249013A/en unknown
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