CH169951A - Process for the preparation of a chromable green monoazo dye. - Google Patents
Process for the preparation of a chromable green monoazo dye.Info
- Publication number
- CH169951A CH169951A CH169951DA CH169951A CH 169951 A CH169951 A CH 169951A CH 169951D A CH169951D A CH 169951DA CH 169951 A CH169951 A CH 169951A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- green
- chromable
- blue
- monoazo 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
- C09B29/28—Amino naphthols
- C09B29/30—Amino naphtholsulfonic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines ehromierbaren grünen 1VlonoazofarbstofPes. Das vorliegende Verfahren betrifft die Darstellung eines chromierbaren grünen Mono azofarbstoffes und ist dadurch gekennzeichnet, dass man dianotiertes 6-Nitro-4-chlor-2-amino- phenol mit 1-Phenylamino-8-naphtol-4,6-di- sulfonsäure kuppelt.
<I>Beispiel:</I> 18,85 kg 6-Nitro-4-chlor-2-aminophenol werden in 500 Liter Wasser und der nötigen Menge Natronlauge gelöst, mit 6,9 kg Nitrit versetzt und durch Einlaufenlassen in 90 Liter 10 o/oige Salzsäure bei 5 dianotiert. Die Diazoverbindung wird alkalisch, essigsauer oder neutral mit 39,5 kg 1-Phenylamino-8- naphtol-4,6-disulfonsäure vereinigt. Nach Be endigung der Kupplung wird erwärmt, mit Salz gefällt, filtriert und getrocknet.
Der fertige Farbstoff, ein dunkles Pulver, löst sich in Wasser mit blauer, in verdünnter Natronlauge mit graublauer, in konzentrierter Schwefelsäure mit roter, in Alkohol mit röt- licbblauer Farbe. Er färbt auf Wolle in nachchromierter Färbung ein Grün von guten Eigenschaften.
Process for the preparation of an honorable green 1Vlonoazo dye. The present process relates to the preparation of a chromable green mono azo dye and is characterized in that dianotated 6-nitro-4-chloro-2-aminophenol is coupled with 1-phenylamino-8-naphthol-4,6-disulfonic acid.
<I> Example: </I> 18.85 kg of 6-nitro-4-chloro-2-aminophenol are dissolved in 500 liters of water and the necessary amount of sodium hydroxide solution, 6.9 kg of nitrite are added and 10 o / o hydrochloric acid dianotized at 5. The diazo compound is combined with 39.5 kg of 1-phenylamino-8-naphthol-4,6-disulfonic acid in an alkaline, acidic or neutral form. After the coupling has ended, the mixture is heated, precipitated with salt, filtered and dried.
The finished dye, a dark powder, dissolves in water with blue, in dilute sodium hydroxide solution with gray-blue, in concentrated sulfuric acid with red, in alcohol with reddish-blue color. In post-chromed dyeing, it dyes a green with good properties on wool.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH166222T | 1933-03-07 | ||
CH169951T | 1933-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH169951A true CH169951A (en) | 1934-06-15 |
Family
ID=25718251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH169951D CH169951A (en) | 1933-03-07 | 1933-03-07 | Process for the preparation of a chromable green monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH169951A (en) |
-
1933
- 1933-03-07 CH CH169951D patent/CH169951A/en unknown
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