CH129181A - Process for the preparation of a monoazo dye. - Google Patents
Process for the preparation of a monoazo dye.Info
- Publication number
- CH129181A CH129181A CH129181DA CH129181A CH 129181 A CH129181 A CH 129181A CH 129181D A CH129181D A CH 129181DA CH 129181 A CH129181 A CH 129181A
- Authority
- CH
- Switzerland
- Prior art keywords
- red
- preparation
- dye
- monoazo dye
- carboxylic acid
- Prior art date
Links
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 title claims description 3
- 238000000034 method Methods 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 150000008049 diazo compounds Chemical class 0.000 claims description 3
- YLNDNABNWASMFD-UHFFFAOYSA-N 4-[(1,3-dimethylimidazol-1-ium-2-yl)diazenyl]-n,n-dimethylaniline Chemical compound C1=CC(N(C)C)=CC=C1N=NC1=[N+](C)C=CN1C YLNDNABNWASMFD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 239000004922 lacquer Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- JGSAMPZLJLDOKW-UHFFFAOYSA-N 5-amino-2-chloro-4-sulfobenzoic acid Chemical compound NC1=CC(C(O)=O)=C(Cl)C=C1S(O)(=O)=O JGSAMPZLJLDOKW-UHFFFAOYSA-N 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Paper (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines IIl=onoazofarbstofFes. Es wurde gefunden, dass ein wertvoller roter Monoazofarbstoff entsteht, wenn man die Diazoverbindung der 1-Amino-2-su@fo- 4-chlorbenzol-5-carbonsäure mit 2-Oxynaph- talin-3-carbonsäure kombiniert.
<I>Beispiel</I> 50,3 kg 1-Amino=2-sulfo-4-chlorbenzol-5- earbonsäure werden in 1000 Liter Wasser verteilt und nach Zusatz von 25 kg Salz säure 30 %ig mit 13,8 kg Natriumnitrit bei 10 diazotiert. Zu der mit Natronlauge ge- < gen Kongopapier fast neutral gemachten Sus- pension der Diazoverbindung läuft eine neu trale Lösung des Natronsalzes von 38 kg 2-Oxynaphtalin-3-carbonsäure in 1000 Liter Wasser.
Nach beendeter Kupplung wird der Farbstoff bei 60 mit Kochsalz ausgefällt, filtriert und getrocknet. Der Farbstoff stellt ein rotes Pulver dar, löslich in Wasser mit rubinroter, in kon zentrierter Schwefelsäure mit blauroter Farbe. Er gibt mit Tonerde und Barium lebhafte blaurote Lacke.
Process for the preparation of a III = onoazo dye. It has been found that a valuable red monoazo dye is formed when the diazo compound of 1-amino-2-su @ fo-4-chlorobenzene-5-carboxylic acid is combined with 2-oxynaphthalene-3-carboxylic acid.
<I> Example </I> 50.3 kg of 1-amino = 2-sulfo-4-chlorobenzene-5-carbonic acid are distributed in 1000 liters of water and, after adding 25 kg of hydrochloric acid, 30% strength with 13.8 kg of sodium nitrite diazotized at 10. A neutral solution of the sodium salt of 38 kg of 2-oxynaphthalene-3-carboxylic acid in 1000 liters of water is added to the suspension of the diazo compound, which has been rendered almost neutral to Congo paper with sodium hydroxide.
After the coupling has ended, the dye is precipitated at 60 ° with sodium chloride, filtered and dried. The dye is a red powder, soluble in water with ruby red, in concentrated sulfuric acid with a bluish red color. With clay and barium he gives lively blue-red lacquers.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE129181X | 1926-07-29 | ||
| CH127529T | 1927-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH129181A true CH129181A (en) | 1928-12-01 |
Family
ID=25710914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH129181D CH129181A (en) | 1926-07-29 | 1927-07-08 | Process for the preparation of a monoazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH129181A (en) |
-
1927
- 1927-07-08 CH CH129181D patent/CH129181A/en unknown
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