CH192051A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH192051A CH192051A CH192051DA CH192051A CH 192051 A CH192051 A CH 192051A CH 192051D A CH192051D A CH 192051DA CH 192051 A CH192051 A CH 192051A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- new azo
- production
- blue
- 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
<B>Zusatzpatent</B> zum Hauptpatent Nr. 190424. Verfahren zur Herstellung eines neuen Azofarustoffes. Es wurde gefunden, dass man einen neuen Azofarbstoff erhält, wenn man die Diazover- bindung des 1-Aminobenzol-4-acetylamino-2- methylsulfons in. saurem Medium mit 1- Amino - 8 - oxynaphthalin - 3,
6 - disulfonsäure vereinigt und diesen so erhältlichen Farb stoff in alkalischem Medium mit Diazoben- zol umsetzt. Der neue Azofarbstoff bildet ein dunkles Pulver, das sich in Wasser mit blauer Farbe löst und Wolle aus saurem Bade in blauschwarzen Tönen von guten Echtheitseigenschaften färbt.
<I>Beispiel:</I> 22,8 Teile 1-Aminobenzol-4-acetylamino- 2-methylsulfon werden fein pulverisiert, mit 30 Teilen Salzsäure und 30 Teilen Wasser gut angeschwemmt und bei<B>50'</B> in Lösung gebracht. Beim Abkühlen fällt das Chlor hydrat der Base in feiner Form aus.
Man gibt 100 Teile Eis zu und innerhalb etwa 10 Minuten lässt man die berechnete -Menge Natriumnitrit zutropfen. Nach ca. 20 Minu ten ist die Diazotierung fertig.
Diese Diazo- lösung giesst man nun unter Rühren zu<B>31,9</B> Teilen feingefällter 1-Amino-8-oxynaphtha- lin.-3, 6-disulf onsäure und rührt ca. 3 Stun- den bei ,gewöhnlicher Temperatur.
Dann trägt man 35 Teile Natriumcarbonat ein und vereinigt soloalkalisch mit einer Diazolösung aus 9,3 Teilen Anilin,
die auf .bekannte Weise hergestellt wird. Der Farbstoff fällt aus und wird abfiltriert. Durch Umlösen und Aussalzen wird er gereinigt. Nach dem Trocknen erhält man ein dunkles Pulver, das sich in Wasser mit blauer Farbe löst und Wolle aus saurem Bade blauschwarz färbt.
<B> Additional patent </B> to main patent no. 190424. Process for the production of a new azo-fragrant substance. It has been found that a new azo dye is obtained if the diazo compound of 1-aminobenzene-4-acetylamino-2-methylsulfone is mixed in an acidic medium with 1-amino-8-oxynaphthalene-3,
6 - disulphonic acid combined and this dyestuff available in this way reacts with diazobenzene in an alkaline medium. The new azo dye forms a dark powder that dissolves in water with a blue color and dyes wool from an acid bath in blue-black shades with good fastness properties.
<I> Example: </I> 22.8 parts of 1-aminobenzene-4-acetylamino-2-methylsulfone are finely pulverized, washed well with 30 parts of hydrochloric acid and 30 parts of water and at <B> 50 '</B> in Solution brought. On cooling, the chlorine hydrate of the base precipitates in fine form.
100 parts of ice are added and the calculated amount of sodium nitrite is added dropwise within about 10 minutes. The diazotization is finished after approx. 20 minutes.
This diazo solution is then poured into <B> 31.9 </B> parts of finely precipitated 1-amino-8-oxynaphthalene-3,6-disulphonic acid with stirring and stirred in for about 3 hours, more usual Temperature.
Then you enter 35 parts of sodium carbonate and combined solo alkaline with a diazo solution of 9.3 parts of aniline,
which is manufactured in a known manner. The dye precipitates and is filtered off. It is cleaned by dissolving and salting out. After drying, a dark powder is obtained which dissolves in water with a blue color and dyes wool from an acid bath blue-black.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH190424T | 1936-01-30 | ||
CH192051T | 1936-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH192051A true CH192051A (en) | 1937-07-15 |
Family
ID=25721991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH192051D CH192051A (en) | 1936-01-30 | 1936-01-30 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH192051A (en) |
-
1936
- 1936-01-30 CH CH192051D patent/CH192051A/en unknown
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