CH187908A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH187908A CH187908A CH187908DA CH187908A CH 187908 A CH187908 A CH 187908A CH 187908D A CH187908D A CH 187908DA CH 187908 A CH187908 A CH 187908A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- azo dye
- new azo
- new
- new dye
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/02—Disazo dyes
- C09B31/06—Disazo dyes from a coupling component "C" containing a directive hydroxyl group
-
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/02—Disazo dyes
- C09B31/12—Disazo dyes from other coupling components "C"
- C09B31/14—Heterocyclic components
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen Azofarbstoffes. Es wurde gefunden, dass man einen neuen Farbstoff erhält, welcher der Formel
EMI0001.0003
entspricht, wenn man diazotiertes 4-Amino- 2.5-diäthoxy-3'-chlor-1.1'-azobenzol mit 3- Oxy-1.2-benzofluorenon kuppelt.
Der neue Farbstoff bildet ein schwarzes Pulver. Auf geeigneten Substraten, wie zum Beispiel pflanzlichen Fasern hergestellt, färbt er diese in echten schwarzen Tönen.
Beispiel: 31,9 Teile 4-Amino-2.5-diäthoxy-3'-chlor- 1.1'-azobenzol werden wie üblich diazotiert und in eine Lösung von 24,6 Teilen des 3 Oxy-1. 2-benzofluorenons, 50 Teilen 30 o/oiger Natronlauge, 30 Teilen Soda und 2000 Teilen Wasser eingetragen. Der .gebildete Farbstoff fällt sofort aus. Der schwarze Niederschlag wird filtriert und getrocknet.
Process for the production of a new azo dye. It has been found that a new dye is obtained which has the formula
EMI0001.0003
corresponds if one couples diazotized 4-amino-2.5-diethoxy-3'-chloro-1.1'-azobenzene with 3-oxy-1.2-benzofluorenone.
The new dye forms a black powder. Produced on suitable substrates, such as vegetable fibers, he dyes them in real black tones.
Example: 31.9 parts of 4-amino-2,5-diethoxy-3'-chloro-1,1'-azobenzene are diazotized as usual and in a solution of 24.6 parts of the 3 oxy-1. 2-benzofluorenone, 50 parts of 30% sodium hydroxide solution, 30 parts of soda and 2000 parts of water. The dye formed precipitates out immediately. The black precipitate is filtered off and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH187908T | 1934-10-13 | ||
CH185145T | 1934-10-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH187908A true CH187908A (en) | 1936-11-30 |
Family
ID=25721144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH187908D CH187908A (en) | 1934-10-13 | 1934-10-13 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH187908A (en) |
-
1934
- 1934-10-13 CH CH187908D patent/CH187908A/en unknown
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