CH224129A - Process for the preparation of a primary disazo dye. - Google Patents
Process for the preparation of a primary disazo dye.Info
- Publication number
- CH224129A CH224129A CH224129DA CH224129A CH 224129 A CH224129 A CH 224129A CH 224129D A CH224129D A CH 224129DA CH 224129 A CH224129 A CH 224129A
- Authority
- CH
- Switzerland
- Prior art keywords
- amino
- dye
- preparation
- disazo dye
- diazo compound
- 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
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
- C09B33/02—Disazo dyes
- C09B33/08—Disazo dyes in which the coupling component is a hydroxy-amino compound
- C09B33/10—Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines primären Bisazofarbstofes. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines primä ren Disazofarbstoffes, dadurch gekennzeich net, :dass man :die Diazoverbindung von 1- Amino-@2,5-,di:chlorbe@nzol in saurem Medium mit 1-Amino-8-ogynaphthalin-3;6-:disulfon- säure und den so erhaltenen Monoazofarb- stoff in alkalischem Medium mit :
der Diazo- verbindu,ng aus 1-Amino-4-N-:cyclohegyl- caprinyl-aminobenzol vereinigt.
Der so erhaltene Disazofarbstoff ist ein dunkles Pulver, das sieh in Wasser mit blauer, in konzentrierter Schwefelsäure mit rotstichig schwarzer Farbe löst, und färbt Wolle aus saurem Bade in schwarzen Tönen. Die Färbungen besitzen sehr gute Wasch-, Walk-, Schweiss-, 'Seewasser-, Dekatur- und Lichtechtheit.
<I>Beispiel:</I> Eine aus 16,2 Teilen 1-Amino-2i5-:dichlor- benzol hergestellte Diazolösung lässt man in eine mineralsaure Lösung von 31,9 Teilen 1-Amino - 8 - ogynaplhthalin- 3, 6 --disulfonsäure laufen.
Nach beendeter Bildung :des Mono- azofarbs@toffes wird.die'ser abgeschieden und mit überschüssigem Natriumcarbonat wieder in Lösung gebracht. In diese Lösung lässt man eine aus 34,4 Teilen 1-Amiuo-4-N-:cyclo- hegyl-caprinyl-aminobenzol hergestellte Di- azolösun.g fliessen. Der Dieazofarbstoff wird albgeschieden, gewaschen und getrocknet.
Process for the preparation of a primary disazo dye. The present patent relates to a process for the preparation of a primary disazo dye, characterized in that: the diazo compound of 1- amino- @ 2,5-, di: chlorbe @ nzol in an acidic medium with 1-amino-8- ogynaphthalene-3; 6-: disulfonic acid and the resulting monoazo dye in an alkaline medium with:
the diazo compound from 1-amino-4-N-: cyclohegyl-caprinyl-aminobenzene combined.
The disazo dye thus obtained is a dark powder that dissolves in water with a blue color, in concentrated sulfuric acid with a reddish black color, and dyes wool from acid baths in black tones. The dyeings have very good wash, fulling, perspiration, seawater, decatur and lightfastness.
<I> Example: </I> A diazo solution prepared from 16.2 parts of 1-amino-2i5-: dichlorobenzene is left in a mineral acid solution of 31.9 parts of 1-amino - 8 - ogynaplhthalin- 3, 6 - -disulfonic acid run.
When the formation of the monoazo dye is complete, it is deposited and redissolved with excess sodium carbonate. A diazo solution prepared from 34.4 parts of 1-amino-4-N-: cyclo-hegyl-caprinyl-aminobenzene is allowed to flow into this solution. The azo dye is separated, washed and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE224129X | 1940-09-07 | ||
CH221927T | 1941-07-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH224129A true CH224129A (en) | 1942-10-31 |
Family
ID=25726571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH224129D CH224129A (en) | 1940-09-07 | 1941-07-18 | Process for the preparation of a primary disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH224129A (en) |
-
1941
- 1941-07-18 CH CH224129D patent/CH224129A/en unknown
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