CH284699A - Process for the production of a vat dye. - Google Patents
Process for the production of a vat dye.Info
- Publication number
- CH284699A CH284699A CH284699DA CH284699A CH 284699 A CH284699 A CH 284699A CH 284699D A CH284699D A CH 284699DA CH 284699 A CH284699 A CH 284699A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- vat
- vat dye
- condensation
- carried out
- 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
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/16—Amino-anthraquinones
- C09B1/20—Preparation from starting materials already containing the anthracene nucleus
- C09B1/48—Anthrimides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Küpenfarbstoffes. Es wurde gefunden, dass man zu einem wertvollen Küpenfarbstoff gelangt, wenn man ein 1,8-Dihalogenanthraehinon beidseitig mit 4- Aminoantliraehinon-2,7 (N)-benzolaeridon kon densiert.
Der neue Farbstoff bildet ein grünstichig blaues Pulver, das sich in konzentrierter Schwefelsäure mit braunstichig gelber Farbe löst und Baumwolle aus violettbrauner Küpe in grauen Tönen färbt.
Als 1.,8-Dihalogenanthraehinon verwendet man beim vorliegenden Verfahren mit. Vorteil das 1,8-Dichloranthrachinon. Die Umsetzun gen des 7,8-Dihalogenanthraehinons mit 4- Aminoanthrachinon-2,1(N)-benzolaeridonkann in hochsiedenden Lösungsmitteln, die mit den Ausgangsstoffen keine Reaktion ergeben, z. B. in Nitrobenzol oder Naphthalin, durchgeführt werden, zweckmässig in Gegenwart der übli chen, die Anthrimidbildung befördernden Ka talysatoren wie Kupfer und Kupfersalzen.
<I>Beispiel:</I> In feingepulvertem Zustande werden 11,1 Teile 1,8-Diehloranthrachinon, 28,6 Teile 4 Aminoanthrachinon -1 (N), 2-,1', 2' (N) - benzol- aeridon, 8 Teile wasserfreies Natriumacetat, 4 Teile Magnesiumoxpd und 2 Teile Kupfer chlorür zu 200 Teilen Naphthalin gegeben. Man erhitzt und rührt so lange unter leichtem Sieden, bis die Ausgangsprodukte verschwun den sind. Dann lässt man auf 160 abkühlen, verdünnt mit 200 Teilen Monochlorbenzol und rührt. eine Stunde bei 140 bis 150 . Nach dem Abkühlen auf etwa 90 wird abgesaugt.
Der Rückstand wird durch Behandeln mit Mono chlorbenzol, dann mit Alkohol, mit verdünnter Salzsäure und schliesslich mit Wasser gereinigt und dann getroeknet. Die Ausbeute beträgt 90 bis 95 % der Theorie.
Process for the production of a vat dye. It has been found that a valuable vat dye is obtained if a 1,8-dihaloanthraehinone is condensed on both sides with 4-aminoantliraehinone-2,7 (N) -benzolaeridone.
The new dye forms a greenish blue powder that dissolves in concentrated sulfuric acid with a brownish yellow color and dyes cotton from a purple-brown vat in gray tones.
The first, 8-dihaloanthraehinone used in the present process is also used. The advantage of 1,8-dichloroanthraquinone. The implementation of 7,8-Dihalogenanthraehinons with 4-Aminoanthraquinone-2,1 (N) -benzolaeridonkannkann in high-boiling solvents which do not react with the starting materials, e.g. B. in nitrobenzene or naphthalene, be carried out, expediently in the presence of übli Chen, the anthrimide promoting Ka catalysts such as copper and copper salts.
<I> Example: </I> In a finely powdered state, 11.1 parts of 1,8-diehloranthraquinone, 28.6 parts of 4-aminoanthraquinone -1 (N), 2-, 1 ', 2' (N) -benzene aeridone , 8 parts of anhydrous sodium acetate, 4 parts of magnesium oxide and 2 parts of chlorine copper are added to 200 parts of naphthalene. The mixture is heated and stirred under gentle boiling until the starting products have disappeared. Then allowed to cool to 160, diluted with 200 parts of monochlorobenzene and stirred. an hour at 140 to 150. After cooling to about 90, it is suctioned off.
The residue is purified by treatment with monochlorobenzene, then with alcohol, with dilute hydrochloric acid and finally with water and then dried. The yield is 90 to 95% of theory.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH284699T | 1949-07-21 | ||
CH280839T | 1950-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH284699A true CH284699A (en) | 1952-07-31 |
Family
ID=25732041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH284699D CH284699A (en) | 1949-07-21 | 1949-07-21 | Process for the production of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH284699A (en) |
-
1949
- 1949-07-21 CH CH284699D patent/CH284699A/en unknown
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