CH226638A - Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. - Google Patents
Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series.Info
- Publication number
- CH226638A CH226638A CH226638DA CH226638A CH 226638 A CH226638 A CH 226638A CH 226638D A CH226638D A CH 226638DA CH 226638 A CH226638 A CH 226638A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid ester
- leuco
- sulfuric acid
- anthraquinone series
- vat 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
- C09B9/00—Esters or ester-salts of leuco compounds of vat dyestuffs
- C09B9/02—Esters or ester-salts of leuco compounds of vat dyestuffs of anthracene dyes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0019—Chemical composition and manufacture
- H01J2893/0022—Manufacture
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 222255. Verfahren zur Herstellung des Leukoschwefelsäureesters eines Nüpenfarbstoifes der Anthrachinonreihe. Gegenstand dieses Patentes ist ein Ver fahren zur Herstellung des Leukoschwefel- säureesters eines Küpenfarbstoffes der An- thrachinonreihe, welches darin besteht, dass man den Farbstoff, der durch Kuppeln des diazotierten 1-Amino - 3 - chloranthrachinons mit Acetessigsäure=3,
-trifluormethylanilid er hältlich ist, durch Behandlung mit einem reduzierenden Mittel und einem Schwefel- trioxyd liefernden Veresterungsmittel in Gegenwart einer tertiären Base in den Leuko- schwefelsäureester überführt.
Die Überführung des Küpenfarbstoffes in den Leukoschwefelsäureester erfolgt- in der üblichen Weise, zum Beispiel durch Be handeln des Farbstoffes in Gegenwart einer tertiären Base, wie zum Beispiel Pyridin, und eines Schwefeltrioxyd liefernden Ver- esterungsmittels, wie zum Beispiel Chlor sulfonsäureoder Chlorsulfo@nsäureester, mit einem Metall, zum Beispiel mit Kupfer oder Eisen.
Zur Aufarbeitung wird das UmGetzungs- gemisch zweckmässig in eine Lösung von Na- triumcarbonat oder Natriumhydroxyd oder Ammoniak in Wasser gegeben, in geeigneter Weise, zurr Beispiel durch Destillation im Vakuum, von der tertiären Base befreit und von den Metallsalzen abfiltriert. Aus dem Filtrat kann der gebildete lieukoschwefel- säureester in Form eines Salzes,
zum Bei spiel in Form des Natriumsalzes oder Ka- liumsalzes, durch Auss alzen mit Natrium chlorid oder Kaliumchlorid gewonnen wer den.
Das ausgefällte Alkalimetalloalz -des Leukoschwefe#lsäureesiters wird abfiltriert und zur Erhöhung der Haltbarkeit mit etwas Na- triumcarbonat veTsetzt. <I>Beispiel:
</I> 100 Gewichtsteile, des Azofarbstoffes, der, durch Kuppeln von diazotiertem 1-Amino-3- chloranthrachinon mit Acetess.igsäure-3-tri- fluormethylanilid erhältlich ist, und 60 Ge- wichtsteile Eisenpulver werden in ein Ver- esterun,gsgemisch aus 800 Gewichtsteilen Py- ridin (Siedepunkt 125-128 ) und 150 Ge wichtsteilen Chlorsulfonsäure eingetragen.
Nach Beendigung der Veresterung, die bei 50-60 durchgeführt wird, wird das Reak tionsgemisch in eine Lösung von 230 Ge- wiehtsteilen Natriumca.rbonat in 4000 Ge wichtsteilen Wasser gegeben und das Pyri- din im Vakuum abdestilliert.
Die wässrige Lösung wird durch Filtra tion vom Eisenschlamm abgetrennt und mit Natriumchlorid versetzt. Bei Zimmertempe ratur wird der auogesalzene Ester abgesaugt und mit Natriumcarbonat stabilisiert. In der Druckerei erhält man mit dem Leukosehwefel- säureester, nach der für diese Farbstoffklasse üblichen Methode, ein lebhaftes, leicht rot- stichiges Gelb mit sehr guten Echtheiten.
Additional patent to main patent no. 222255. Process for the production of the leuco-sulfuric acid ester of a nub dye of the anthraquinone series. The subject of this patent is a process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series, which consists in that the dye obtained by coupling the diazotized 1-amino-3-chloranthraquinone with acetoacetic acid = 3,
-trifluoromethylanilide he is available, converted into the leuco-sulfuric acid ester by treatment with a reducing agent and an esterifying agent providing sulfur trioxide in the presence of a tertiary base.
The vat dye is converted into the leucosulfuric acid ester in the usual way, for example by treating the dye in the presence of a tertiary base, such as pyridine, and an esterifying agent which provides sulfur trioxide, such as chlorosulfonic acid or chlorosulfonic acid ester a metal, for example with copper or iron.
For work-up, the reaction mixture is expediently added to a solution of sodium carbonate or sodium hydroxide or ammonia in water, freed from the tertiary base in a suitable manner, for example by distillation in vacuo, and the metal salts filtered off. The leuco-sulfuric acid ester formed can be obtained from the filtrate in the form of a salt,
For example, in the form of the sodium salt or potassium salt, obtained by salting out with sodium chloride or potassium chloride.
The precipitated alkali metal salt of the leuco-sulfuric acid ester is filtered off and a little sodium carbonate is added to increase the shelf life. <I> example:
100 parts by weight of the azo dye, which can be obtained by coupling diazotized 1-amino-3-chloroanthraquinone with 3-trifluoromethylanilide acetoacetic acid, and 60 parts by weight of iron powder are converted into an esterification mixture entered from 800 parts by weight of pyridine (boiling point 125-128) and 150 parts by weight of chlorosulfonic acid.
After the esterification, which is carried out at 50-60, the reaction mixture is poured into a solution of 230 parts by weight of sodium carbonate in 4000 parts by weight of water and the pyridine is distilled off in vacuo.
The aqueous solution is separated from the iron sludge by filtration, and sodium chloride is added. At room temperature, the acid-salted ester is filtered off with suction and stabilized with sodium carbonate. In the printing works, the leucose sulfuric acid ester gives a lively, slightly reddish yellow with very good fastness properties using the method customary for this class of dyes.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE110740X | 1940-07-11 | ||
CH222255T | 1941-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH226638A true CH226638A (en) | 1943-04-15 |
Family
ID=25726618
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH226635D CH226635A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226636D CH226636A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226637D CH226637A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226638D CH226638A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226634D CH226634A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH226635D CH226635A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226636D CH226636A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226637D CH226637A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH226634D CH226634A (en) | 1940-07-11 | 1941-05-20 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (5) | CH226635A (en) |
-
1941
- 1941-05-20 CH CH226635D patent/CH226635A/en unknown
- 1941-05-20 CH CH226636D patent/CH226636A/en unknown
- 1941-05-20 CH CH226637D patent/CH226637A/en unknown
- 1941-05-20 CH CH226638D patent/CH226638A/en unknown
- 1941-05-20 CH CH226634D patent/CH226634A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH226634A (en) | 1943-04-15 |
CH226635A (en) | 1943-04-15 |
CH226637A (en) | 1943-04-15 |
CH226636A (en) | 1943-04-15 |
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