CH137650A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH137650A CH137650A CH137650DA CH137650A CH 137650 A CH137650 A CH 137650A CH 137650D A CH137650D A CH 137650DA CH 137650 A CH137650 A CH 137650A
- Authority
- CH
- Switzerland
- Prior art keywords
- amino
- carried out
- phosgene
- mole
- copper
- 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
- C09B33/04—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound
- C09B33/056—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound the coupling component being a bis-(naphthol-urea)
-
- 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
- C09B45/24—Disazo or polyazo compounds
- C09B45/28—Disazo or polyazo compounds containing copper
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Azofarbstotes. Es wurde gefunden, dass man einen neuer metallhaltigen Azofarbstoff erhält, wenn man 2 Mol 2-Amino-5-oxynaphthalirr-7-sulfosäure, 1 Mol dianotierte 1-Amino-2-benzolcarborr- säure, 1 Mol dianotiertes 4-Nitro-2-amino-l- oxybenzol, 1 Mol Phosgen und kupferabge bende Mittel aufeinander einwirken lässt und diese verschiedenen Operationen derart vor nimmt,
dass die Behandlung mit den kupfer abgebenden Mitteln nicht vor der Kupplungs reaktion und die Behandlung mit Phosgen nicht gleichzeitig mit einer andern Operation durchgeführt wird.
Der neue Farbstoff bildet ein dunkelrot braunes Pulver, löst sich in Wasser mit bordeauxroter Farbe und erzeugt auf Baum wolle oder gunstseiden, wie Viskose- oder Kupferoxydammoniakseide, bordeauxrote Töne von vorzüglicher Lichtechtheit. <I>Beispiel:</I> Man stellt in bekannter Weise den Harn stoff aus 2 Mol 2-Amino-5-oxynaphthalin-7- srrlfosäure und 1 Mol Phosgen dar. 13,7 Teile dianotierte 1-Amino-2-benzol carbonsäure werden eingerührt in eine Lösung von 50,4 Teilen des obigen Harnstoffes in 5000 Teilen Wasser.
Nach Zugabe von 22 Teilen kristallisiertem Natriumacetat rührt man 2 Stunden bei 10-15 , gibt sodann nach und nach 10 %ige Natriumcarbonat- lösung hinzu bis zur neutralen Reaktion, fügt weitere 24 Teile Natriumcarbonat zu und lässt 15,4 Teile dianotiertes 4-Nitro-2-amino- 1-oxybenzol zufliessen.
Nach beendeter Reak tion heizt man auf 80 0 auf, stellt mit ver dünnter Schwefelsäure schwach sauer, fügt 28 Teile kristallisiertes Natriumacetat, sowie 60 Teile kristallisiertes Kupfersulfat in Form einer 20 o/oigen Lösung zu und rührt 2-3 Stunden bei 80 0. Die ausgeschiedene Kupfer verbindung wird abfiltriert, mit verdünntem überschüssigem Ammoniak bei 60 0 angerührt und zur Trockne eingedampft.
Zum gleichen Produkt gelangt man, wenn man zunächst die Azofarbstoffe, einerseits aus dianotierter 1-Amirro-2-benzolcarbonsäure und dianotiertem 4 - Nitro - 2 - amino -1- oxybenzol, anderseits aus 2-Amino-5-oxynaphthalin-7- siilfosäure, herstellt, diese hierauf mittelst Phosgen vereinigt und die Kupferung gleich zeitig mit der Kupplung oder vor oder nach der Behandlung mit Phosgen vornimmt.
Process for the production of an azo dye dead. It has been found that a new metal-containing azo dye is obtained if 2 moles of 2-amino-5-oxynaphthalene-7-sulfonic acid, 1 mole of dianotated 1-amino-2-benzenecarboric acid, 1 mole of dianotated 4-nitro-2- amino-l-oxybenzene, 1 mole of phosgene and copper-releasing agents interact and perform these various operations in such a way that
that the treatment with the copper-releasing agents is not carried out before the coupling reaction and the treatment with phosgene is not carried out at the same time as another operation.
The new dye forms a dark red-brown powder, dissolves in water with a burgundy color and produces burgundy shades of excellent lightfastness on cotton or low-quality silk, such as viscose or copper oxydammonia silk. <I> Example: </I> The urea is prepared in a known manner from 2 moles of 2-amino-5-oxynaphthalene-7-sulfoic acid and 1 mole of phosgene. 13.7 parts of dianotated 1-amino-2-benzene carboxylic acid are stirred into a solution of 50.4 parts of the above urea in 5000 parts of water.
After adding 22 parts of crystallized sodium acetate, the mixture is stirred for 2 hours at 10-15, then gradually adding 10% sodium carbonate solution until the reaction is neutral, adding a further 24 parts of sodium carbonate and allowing 15.4 parts of dianotized 4-nitro 2-amino-1-oxybenzene flow in.
When the reaction is complete, the mixture is heated to 80 0, weakly acidic with dilute sulfuric acid, 28 parts of crystallized sodium acetate and 60 parts of crystallized copper sulfate in the form of a 20% solution are added and the mixture is stirred at 80 0 for 2-3 hours The precipitated copper compound is filtered off, mixed with dilute excess ammonia at 60 ° and evaporated to dryness.
The same product is obtained if the azo dyes, on the one hand from dianotated 1-amirro-2-benzenecarboxylic acid and dianotated 4-nitro-2-amino-1-oxybenzene, on the other hand from 2-amino-5-oxynaphthalene-7-silfic acid, which is then combined by means of phosgene and coppering is carried out simultaneously with the coupling or before or after the treatment with phosgene.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH135748T | 1928-07-14 | ||
CH137650T | 1928-07-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH137650A true CH137650A (en) | 1930-01-15 |
Family
ID=25712558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH137650D CH137650A (en) | 1928-07-14 | 1928-07-14 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH137650A (en) |
-
1928
- 1928-07-14 CH CH137650D patent/CH137650A/en unknown
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