CH159055A - Process for the preparation of a primary disazo dye. - Google Patents
Process for the preparation of a primary disazo dye.Info
- Publication number
- CH159055A CH159055A CH159055DA CH159055A CH 159055 A CH159055 A CH 159055A CH 159055D A CH159055D A CH 159055DA CH 159055 A CH159055 A CH 159055A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- disazo dye
- blue
- wool
- 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)
- Paper (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. <B>155452.</B> Verfahren zur Darstellung eines primären Disazofarbstoffes. Es wurde gefunden, dass man einen rieuen wertvollen primären Disazofarbstoff erhält,
wenn man 1.8-Auainonaphthol-3.6-disulfo- säure in saurer Lösung mit derDlazoverbin- dung von 1-Chlor-4-amino <B>-</B> 2<B>-</B> benzolsulfanilid kuppelt und den so erhaltenen Monoazofarb- stoff weiter in alkalischer Lösung mit der Diazoverbindung von o-Amiiiophenyl-o-tolyl- äther kombiniert. Der neue Farbstoff stellt ein brortzeiarbiges Pulver dar, welches sich in Wasser mit blauer, in konzentrierter Schwefelsäure mit grüner Farbe löst.
Er färbt auf Wolle und Seide ein Blauschwarz von vorzüglicher Walk- bezw. Wasserechtbeit und sehr guter Lichtechtheit.
<I>Beispiel 2:</I> Die aus<B>28,2 kg 1 -</B> Chlor<B>-</B> 4<B>-</B> amino <B>-</B> 2- benzolsulfanilid (kristallisierte Substanz vom Schmelzpunkt<B>152 1)</B> erhaltene Diazolösung wird in<B>31,9 kg</B> frisch gefällte<B>1. 8 -</B> Amino- naphthol-3. 6-disulfosäure eingetragen.
Nach dem die in stark saurer Lösung bei gewöhn- licher Temperatur sich vollziehende Kupplung vollendet ist, wird entweder der Monoazofarb- stoff isoliert und zur weiteren Kombination wieder in Wasser, überschüssiger Soda und 20<B>kg</B> Ammoniak<B>(25</B> '/o) gelöst,
oder es wird die ursprüngliche saure Koaibinationsmasse unmittelbar mit Natronlauge bezw. Soda neutralisiert und hierauf mit überschüssiger Soda und 20 kg Ammoniak (25 %) versetzt. Zur alkalischen Lösung des Monoazofarb- stoffes lässt man sodann unter gutem Rübren die aus<B>19,
9 kg</B> o-Aminophenyl- o<B>-</B> tolyläther erhaltene DiazolÖsung unter gutem Rühren bei<B>0-5 0</B> einfliessen. Nach Verlauf mehrerer Stunden wird aufgewärmt, der Farbstoff aus- gesalzen, abfiltriert und getrocknet.
Der erhaltene Farbstoff bildet ein bronze farbiges Pulver, das in Wasser mit blauer, in konzentrierter Schwefelsäure mit grüner Farbe löslich ist. Er färbt auf Wolle und Seide ein Blauschwarz von vorzüglicher Walk- bezw. Wasserechtheit und schi- guter Licht echtheit.
Additional patent to main patent no. <B> 155452. </B> Process for the preparation of a primary disazo dye. It has been found that one obtains a very valuable primary disazo dye,
when 1.8-Auainonaphthol-3,6-disulfonic acid in acidic solution is coupled with the dlazo compound of 1-chloro-4-amino <B> - </B> 2 <B> - </B> benzenesulfanilide and the monoazo color thus obtained - substance further combined in alkaline solution with the diazo compound of o-amiiophenyl-o-tolyl ether. The new dye is a brown powder that dissolves in water with a blue color, in concentrated sulfuric acid with a green color.
He dyes wool and silk a blue-black of exquisite milled or wool. Water fastness and very good light fastness.
<I> Example 2: </I> The one from <B> 28.2 kg 1 - </B> chlorine <B> - </B> 4 <B> - </B> amino <B> - </ B> 2-benzenesulfanilide (crystallized substance with a melting point <B> 152 1) </B> is diazo solution obtained in <B> 31.9 kg </B> freshly precipitated <B> 1. 8 - Amino-naphthol-3. 6-disulfonic acid entered.
After the coupling, which takes place in a strongly acidic solution at normal temperature, is complete, either the monoazo dye is isolated and for further combination again in water, excess soda and 20 kg ammonia ( 25 </B> '/ o) solved,
or it is the original acidic koaibination mass directly BEZW with caustic soda. Soda neutralized and then treated with excess soda and 20 kg ammonia (25%). For the alkaline solution of the monoazo dye, the mixture from <B> 19,
Pour in 9 kg of o-aminophenyl- o-tolyl ether obtained diazole solution with thorough stirring at <B> 0-5 0 </B>. After several hours, it is warmed up, the dye is salted out, filtered off and dried.
The dye obtained forms a bronze-colored powder which is soluble in water with a blue color and in concentrated sulfuric acid with a green color. He dyes wool and silk a blue-black of exquisite milled or wool. Water fastness and ski good light fastness.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH155452T | 1932-01-01 | ||
CH159055T | 1932-01-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH159055A true CH159055A (en) | 1932-12-15 |
Family
ID=25716587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH159055D CH159055A (en) | 1932-01-01 | 1932-01-01 | Process for the preparation of a primary disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH159055A (en) |
-
1932
- 1932-01-01 CH CH159055D patent/CH159055A/en unknown
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