CH140321A - Process for the preparation of a strong, durable diazo compound. - Google Patents
Process for the preparation of a strong, durable diazo compound.Info
- Publication number
- CH140321A CH140321A CH140321DA CH140321A CH 140321 A CH140321 A CH 140321A CH 140321D A CH140321D A CH 140321DA CH 140321 A CH140321 A CH 140321A
- Authority
- CH
- Switzerland
- Prior art keywords
- durable
- preparation
- diazo compound
- strong
- solution
- Prior art date
Links
- 150000008049 diazo compounds Chemical class 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 claims description 6
- 239000000987 azo dye Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 239000004552 water soluble powder Substances 0.000 description 2
- OOZQLPDAELLDNY-UHFFFAOYSA-N 4-n-(4-aminophenyl)benzene-1,4-diamine;sulfuric acid Chemical compound OS(O)(=O)=O.C1=CC(N)=CC=C1NC1=CC=C(N)C=C1 OOZQLPDAELLDNY-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
Verfahren zur Darstellung einer festen, haltbaren Diazoverbindung. Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Darstellung einer festen, haltbaren Diazov erbindung, darin bestehend, dass man eine Lösung von diazotiertem 4.4' Diaminodiphenylsulfat mit Cadmiumchlorid versetzt. Das Endprodukt stellt ein gelb braunes, kristallines, haltbares, in Wasser lösliches Pulver dar, welches zur Darstellung von Azofarbstoffen Verwendung findet.
<I>Beispiel:</I> Eine aus 300 Teilen 4.4'-Diaminodiphenyl- aminsulfat, 100 Teilen 15 0%iger Salzsäure und 700 Teilen 20 %iger Natriumnitritlösung hergestellte Diazolösung wird mit einer Lö- sung von 330 Teilen kristallisiertem Cadmium chlorid in 330 Teilen Wasser versetzt. Die Diazoverbindung scheidet sich alsbald als Cadmiumdoppelsalz aus.
Die Abscheidung kann durch Zusatz von Kochsalz vervoll ständigt werden. Das Diazosalz wird abfil- triert und in üblicher Weise fertig gemacht. Es stellt ein gelbbraunes, kristallines, halt bares, in Wasser lösliches Pulver dar, wel ches zur Herstellung von Azofarbstoffen Verwendung findet.
Process for the preparation of a strong, durable diazo compound. The subject of the present invention is a method for the preparation of a solid, durable Diazov connection, which consists in adding cadmium chloride to a solution of diazotized 4.4 'diaminodiphenyl sulfate. The end product is a yellow-brown, crystalline, durable, water-soluble powder, which is used to produce azo dyes.
<I> Example: </I> A diazo solution prepared from 300 parts of 4.4'-diaminodiphenylamine sulfate, 100 parts of 15% hydrochloric acid and 700 parts of 20% sodium nitrite solution is mixed with a solution of 330 parts of crystallized cadmium chloride in 330 Parts of water are added. The diazo compound is soon separated out as a cadmium double salt.
The separation can be completed by adding common salt. The diazo salt is filtered off and made ready in the usual way. It is a yellow-brown, crystalline, stable, water-soluble powder that is used for the production of azo dyes.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE140321X | 1927-07-21 | ||
| CH138596T | 1928-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH140321A true CH140321A (en) | 1930-05-31 |
Family
ID=25713207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH140321D CH140321A (en) | 1927-07-21 | 1928-07-19 | Process for the preparation of a strong, durable diazo compound. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH140321A (en) |
-
1928
- 1928-07-19 CH CH140321D patent/CH140321A/en unknown
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