CH209081A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH209081A CH209081A CH209081DA CH209081A CH 209081 A CH209081 A CH 209081A CH 209081D A CH209081D A CH 209081DA CH 209081 A CH209081 A CH 209081A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- preparation
- dye
- red
- acetamino
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
- C09B29/08—Amino benzenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Es wurde gefunden, dass man einen Azo- farbstoff erhält, wenn man die Diazoverbin- dung des 1-Amirio-2,6-dichlor-4-nitrobenzols mit 4-Acetamino-3'-clilordiphenylamin-2-sul- fonsäure der Formel
EMI0001.0009
vereinigt. Der neue Farbstoff bildet ein dunkles Pulver, das sich in Wasser mit roter Farbe löst und das Wolle und Seide aus saurem Bade in rotbraunen Tönen färbt.
<I>Beispiel:</I> 207 Teile 1-Amino-2,6-dichlor-4-nitro- benzol werden dianotiert und in die mineral saure Lösung dieser Diazoverbindung die Lösung des Natriumsalzes aus 340,5 Teilen 4-Acetamino-3'-chloi-diphenylamin-2-sulfon- säure eingetragen. Nachdem die Farbstoff bildung beendet ist, wird abfiltriert, der Farbstoff in Wasser suspendiert und durch Verrühren mit einem Alkali neutral gestellt. Der Farbstoff wird eventuell durch Zusatz eines Salzes ausgeschieden, abfiltriert und getrocknet.
Process for the preparation of an azo dye. It has been found that an azo dye is obtained if the diazo compound of 1-amirio-2,6-dichloro-4-nitrobenzene is used with 4-acetamino-3'-clilordiphenylamine-2-sulphonic acid of the formula
EMI0001.0009
united. The new dye forms a dark powder that dissolves in water with a red color and dyes the wool and silk from acid baths in red-brown tones.
<I> Example: </I> 207 parts of 1-amino-2,6-dichloro-4-nitrobenzene are dianotized and the solution of the sodium salt of 340.5 parts of 4-acetamino-3 is added to the mineral acidic solution of this diazo compound '-chloi-diphenylamine-2-sulfonic acid entered. After the formation of the dye has ended, it is filtered off, the dye is suspended in water and made neutral by stirring with an alkali. The dye is possibly precipitated by adding a salt, filtered off and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH209081T | 1938-11-09 | ||
CH200063T | 1938-11-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH209081A true CH209081A (en) | 1940-03-15 |
Family
ID=25723425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH209081D CH209081A (en) | 1938-11-09 | 1938-11-09 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH209081A (en) |
-
1938
- 1938-11-09 CH CH209081D patent/CH209081A/en unknown
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