CH86986A - Process for the production of an azo dye particularly suitable for cotton printing. - Google Patents
Process for the production of an azo dye particularly suitable for cotton printing.Info
- Publication number
- CH86986A CH86986A CH86986DA CH86986A CH 86986 A CH86986 A CH 86986A CH 86986D A CH86986D A CH 86986DA CH 86986 A CH86986 A CH 86986A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- particularly suitable
- azo dye
- cotton
- carboxylic acid
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
-
- 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
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/16—Naphthol-sulfonic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines zum Baumwolldruck besonders geeigneten Azofarbstoffes. Es wurde gefunden, dass man durch Kup peln von diazotierter 2-Amino-4-chlor-l-oxy- betizol-6-carbonsäure mit 1:8-Dioxynaph- talin-6-sulfo-3-carbonsäure einen Azofarbstoff erhält, welcher sich in Wasser mit rotvioletter, in konzentrierter Schwefelsäure mit blaugrüner Farbe löst und auf Baumwolle, _ nach dem Chromdruckverfahren bedruckt, seifen-, chlor und lichtechte blaue Töne gibt.
<I>Beispiel:</I> Die in möglichst konzentrierter Form dar gestellte Diazoverbindung aus 18,7 Teilen 2-Amino-4-chlor-1-oxybenzol-6-carbonsäure wird mit einer Lösung von 28,4 Teilen 1:8 Dioxynaphtalin-6-sulfo-3-carbonsäure in 100 Teilen 20 % Kalkmilch vereinigt. Nach be endigter Kupplung wird finit Salzsäure ange säuert, der ausgeschiedene Farbstoff mit Soda gelöst, von Kreide abfiltriert, das Filtrat ge salzen und der abgeschiedene Farbstoff fil triert und getrocknet.
Process for the production of an azo dye particularly suitable for cotton printing. It has been found that coupling diazotized 2-amino-4-chloro-1-oxy-betizole-6-carboxylic acid with 1: 8-dioxynaphthalene-6-sulfo-3-carboxylic acid gives an azo dye, which is obtained Dissolves in water with red-violet, in concentrated sulfuric acid with a blue-green color and gives soap, chlorine and lightfast blue tones on cotton, _ printed using the chrome printing process.
<I> Example: </I> The diazo compound presented in the most concentrated form possible from 18.7 parts of 2-amino-4-chloro-1-oxybenzene-6-carboxylic acid is mixed with a solution of 28.4 parts of 1: 8 dioxynaphthalene -6-sulfo-3-carboxylic acid combined in 100 parts of 20% milk of lime. After coupling is complete, finite hydrochloric acid is acidified, the dyestuff which has separated out is dissolved with soda, filtered off from chalk, the filtrate is salted and the dyestuff separated out is filtered off and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH86026T | 1918-05-24 | ||
CH86986T | 1918-05-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH86986A true CH86986A (en) | 1920-11-01 |
Family
ID=25703525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH86986D CH86986A (en) | 1918-05-24 | 1918-05-24 | Process for the production of an azo dye particularly suitable for cotton printing. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH86986A (en) |
-
1918
- 1918-05-24 CH CH86986D patent/CH86986A/en unknown
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