CH159053A - Process for the preparation of a primary disazo dye. - Google Patents
Process for the preparation of a primary disazo dye.Info
- Publication number
- CH159053A CH159053A CH159053DA CH159053A CH 159053 A CH159053 A CH 159053A CH 159053D A CH159053D A CH 159053DA CH 159053 A CH159053 A CH 159053A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- wool
- water
- disazo 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
- 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
Zusatzpatent zum Hauptpatent Nr. 155452. Verfahren zur Darstellung eines primären Disazofai-bstofe"#,. Es wurde gefunden, dass man einen neuen wertvollen primären Disazofarbstoff erhält, wenn man 1.
8-Aminonaphthol-3.6-disulfosäure in saurer Lösung mit der Diazoverbindung von 1-Chlor-4-amino-2-benzol-sulfäthylanilid kuppelt und den so erhaltenen Monoazofarb- stoff weiter in alkalischer Lösung mit der Diazoverbindung von o-Aminophenyl-o-tolyl- äther kombiniert. Der neue Farbstoff stellt ein bronzefarbiges 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. Wasserecht heit und sehr guter Lichtechtheit.
<I>Beispiel:</I> Die aus 31 kg 1-Chlor-4-amino-2-benzol- sulfäthylanilid (kristall. Substanz vom Schmelz punkt<B>1190)</B> erhaltene Diazolösung wird in 31,9 kg frisch gefällte 1.8-Aminonaphthol- 3.6-disulfosäure eingetragen.
Nachdem die n stark saurer Lösung bei gewöhnlicher Temperatur sich vollziehende Kupplung voll endet ist, wird entweder der lZonoazofarb- stoff isoliert und zur weiteren Kombination wieder in Wasser, -überschüssiger Soda und 20 kg Ammoniak (25%) gelöst, oder es wird die ursprüngliche saure Kombinations masse unmittelbar mit Natronlauge bezw. Soda neutralisiert und hierauf mit über schüssiger Soda und 20 kg Ammoniak (250;'0) versetzt.
Zur alkalischen Lösung des Mono azofarbstoffes lässt man sodann unter gutem Rühren die aus 19,9 kg o-Amittophenyl-o- tolyläther erhaltene Diazolösung unter gutem Rühren bei 0-5 0 einfliessen. Nach Verlauf mehrerer Stunden wird aufgewärmt, der Farb stoff ausgesalzen, 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 vorziiglicher Walk bezw. Wasserechtheit und sehr guter Licht echtheit.
Supplementary patent to main patent No. 155452. Method of preparing a primary disazo dye "#,. It has been found that a new valuable primary disazo dye can be obtained by 1.
8-aminonaphthol-3,6-disulfonic acid in acidic solution with the diazo compound of 1-chloro-4-amino-2-benzene-sulfethylanilide and the resulting monoazo dye further in alkaline solution with the diazo compound of o-aminophenyl-o-tolyl - ether combined. The new dye is a bronze-colored powder which 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. Waterfastness and very good lightfastness.
<I> Example: </I> The diazo solution obtained from 31 kg of 1-chloro-4-amino-2-benzenesulfethylanilide (crystalline substance with a melting point <B> 1190) </B> is in 31.9 kg freshly precipitated 1,8-aminonaphthol-3,6-disulfonic acid entered.
After the coupling, which takes place in a strongly acidic solution at normal temperature, has completely ended, either the zonoazo dye is isolated and dissolved again in water, excess soda and 20 kg of ammonia (25%) for further combination, or the original acidic solution becomes Combination mass directly with caustic soda respectively. Soda neutralized and then mixed with excess soda and 20 kg ammonia (250; '0).
The diazo solution obtained from 19.9 kg of o-amittophenyl-o-tolyl ether is then added to the alkaline solution of the mono azo dye with thorough stirring at 0-5 °. 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 boiled wool or. Waterfastness and very good lightfastness.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH155452T | 1932-01-01 | ||
CH159053T | 1932-01-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH159053A true CH159053A (en) | 1932-12-15 |
Family
ID=25716585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH159053D CH159053A (en) | 1932-01-01 | 1932-01-01 | Process for the preparation of a primary disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH159053A (en) |
-
1932
- 1932-01-01 CH CH159053D patent/CH159053A/en unknown
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