CH224351A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH224351A CH224351A CH224351DA CH224351A CH 224351 A CH224351 A CH 224351A CH 224351D A CH224351D A CH 224351DA CH 224351 A CH224351 A CH 224351A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- blue
- azo dye
- dye
- preparation
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-Amino-2-oxy-3.5- dichlorbenzol in alkalischem Medium mit 1- Methylamino - 7 - oxynaphthalin-3-sulf onsäure vereinigt.
Der getrocknete Farbstoff ist ein dunkel violettes Pulver, das sich in Wasser mit blauer, in verdünnter Essigsäure und konzen trierter Schwefelsäure mit violetter Farbe löst und Wolle aus saurem Bade in blaugrünen Tönen färbt, die beim Nachchromieren in ein Oliv-rau von sehr guter Walk- und Pot- tingechtheit und guter Lichtechtheit über gehen. Die Färbung behält ihren schönen Ton bei künstlicher Beleuchtung bei.
<I>Beispiel:</I> Die aus 18 Teilen 1-Amino-2-oxy-3,5-di- chlorbenzol hergestellte Diazoverbindung wird in eine überschüssiges Natriums rbonat enthaltende Lösung von 25,3 Teilen 1-Methyl- amino-7-oxynaphthalin-3-sulfonsäure (herge stellt aus der 9,N-Dibenzolsulfo-l-amin. ?- oxynaphthalin-3-sulfonsäure durch Methylie- rung und Abspaltung der beiden BenzolsuHo- reste)
eingetragen. Nach beendeter Kuppe lung wird der gebildete Farbstoff abgeschie den und getrocknet.
Process for the preparation of an azo dye. The present patent relates to a process for the production of an azo dye, characterized in that the diazo compound of 1-amino-2-oxy-3,5-dichlorobenzene is combined with 1-methylamino-7-oxynaphthalene-3-sulfonic acid in an alkaline medium .
The dried dye is a dark violet powder that dissolves in water with blue, in dilute acetic acid and concentrated sulfuric acid with a violet color and dyes wool from an acid bath in blue-green tones, which when re-chromed turns into an olive-rough of very good fulling. and potency and good lightfastness pass over. The coloring maintains its beautiful tone with artificial lighting.
<I> Example: </I> The diazo compound produced from 18 parts of 1-amino-2-oxy-3,5-dichlorobenzene is dissolved in a solution of 25.3 parts of 1-methylamino-7 containing excess sodium carbonate -oxynaphthalene-3-sulfonic acid (produced from 9, N-dibenzenesulfo-1-amine.? - oxynaphthalene-3-sulfonic acid by methylation and splitting off of the two benzene sulfo residues)
registered. After the coupling has ended, the dye formed is deposited and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE224351X | 1939-11-08 | ||
CH220216T | 1940-11-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH224351A true CH224351A (en) | 1942-11-15 |
Family
ID=25726414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH224351D CH224351A (en) | 1939-11-08 | 1940-11-01 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH224351A (en) |
-
1940
- 1940-11-01 CH CH224351D patent/CH224351A/en unknown
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