CH226630A - 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
- CH226630A CH226630A CH226630DA CH226630A CH 226630 A CH226630 A CH 226630A CH 226630D A CH226630D A CH 226630DA CH 226630 A CH226630 A CH 226630A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid ester
- leuco
- sulfuric acid
- preparation
- 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
- C09B56/00—Azo dyes containing other chromophoric systems
- C09B56/12—Anthraquinone-azo dyes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 222255. Verfahren zur Herstellung des Leukoschwefelsäureesters eines Nüpenfarbstoffes der Anthrachinonreihe. Gegenstand dieses Patentes ist ein Ver fahren zur Herstellung des Leukos,chwefel- säureesters eines Küpenfarbetoffes der An- tbrachinonreihe, welches darin besteht, dass man den Farbstoff,
der durch Kuppeln des diazotierten 1-Amino - 8 - chloranthrachinons mit Acetes,ssigsäure-o-anisidid erhältlich ist, durch Behandlung mit einem reduzierenden Mittel und einem Schwefeltriogyd liefernden Veiesterungsmittel in Gegenwart einer ter tiären Base in den Leukoschwefelsäureester überführt.
Die Überführung des Küpenfarbstoffes in den Leukoschwefelsäureester erfolgt in der üblichen Weise, zum Beisspiel durch Be handeln des Farbstoffes, in Gegenwart einer tertiären Base, wie zum Beispiel Pyridin, und eines Schwefeltriogyd liefernden Ver- esterungsmittels, wie zum Beispiel Chlorsul- fonsäure oder Chlorsulfonsäureester, mit einem Metall, zum Beispiel mit Kupfer oder Eisen.
Zur Aufarbeitung wird das Umsetzungs gemisch zweckmässig in eine Lösung von Na- triumearbonat oder Natriumhydrogyd oder! Ammoniak in Wasser gegeben, in geeigne- ter Weise, zum Beisspiel durch Destillation. im Vakuum, von der tertiären Base befreit und von den Metallsalzen abfiltriert. Aus dem Filtrat kann der gebildete Leukoschwe- felsäureester in Form eines Salzes, zum Bei spiel in Form des,
Natriumsalzes oder Ka- liumsalze s, durch Aussalzen mit Kaliumchlo- rid oder Natriumchlorid gewonnen, werden. Das ausgefällte Alkalimetallsalz des Leuko- schwefelsäureesters wird abfiltriert und zur Erhöhung der Haltbarkeit mit etwas Na- triumcarbonat versetzt.
<I>Beispiel:</I> In ein Veresterungs@gemisch, das erhalten , wird durch Zutropfen von 150 Gewichtstei len Chlorsulfonsäure in 800 Gawiclhtsteile einer Pyridinfraktion vom Siedepunkt 125 bis 128 C, trägt man 100 Gewichtsteile eines Farbstoffes, der durch Kuppeln von diazotiertem 1-Amino - 3 - chloranthracliinon mit Acetessi,c,eäure-o-anisidid erhältlich ist, und 60 Gewichtsteile Eisenpulver ein. Die Veresterung wird bei 50-60 C durchge führt.
Nach etwa einstündigem Rühren gibt man da-s Reaktionsgemisch in eine Lösung von 230 Gewichtsteilen Natriumcarbona.t in 4000 Gewichtsteilen Wasser und destilliert. das Pyridin im Vakuum ab.
Die wässerige Lösung des Leukoschwefelsäureesters, die man nach dem Abtrennen des, Eieeri@schlam- mes durch Filtration erhält., wird mit Na triumchlorid ausgesalzen und der ausgeschie dene Ester dann filtriert und mit etwa 2% Natriumcarbonat verpastet. Der Leukoschwe- felsäureester gibt auf Baumwolle oder Kunstseide gedruckt und in der üblichen Weise mit sauren Oxydationsmitteln ent wickelt, ein lebhaftes Goldgelb von sehr guten Echtheitseigenschaften.
<B> Additional patent </B> 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 production of the leuco, sulfuric acid ester of a vat dye of the antbrachinone series, which consists in that the dye,
which is obtainable by coupling the diazotized 1-amino-8-chloroanthraquinone with acetate, ssigsäure-o-anisidid, by treatment with a reducing agent and a sulfur triogyd-yielding esterifying agent in the presence of a tertiary base in the leucosulfuric acid ester.
The conversion of the vat dye into the leuco sulfuric acid ester takes place in the usual way, for example by treating the dye in the presence of a tertiary base, such as pyridine, and an esterifying agent such as chlorosulfonic acid or chlorosulfonic acid ester which provides sulfur triogyd a metal, for example with copper or iron.
For working up, the reaction mixture is expediently converted into a solution of sodium carbonate or sodium hydrogen or! Ammonia is added to water in a suitable manner, for example by distillation. in vacuo, freed from the tertiary base and filtered off from the metal salts. The leuco sulfuric acid ester formed can be obtained from the filtrate in the form of a salt, for example in the form of
Sodium salts or potassium salts obtained by salting out with potassium chloride or sodium 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: </I> In an esterification mixture that is obtained, 150 parts by weight of chlorosulfonic acid in 800 parts by weight of a pyridine fraction with a boiling point of 125 to 128 ° C. are added to carry 100 parts by weight of a dye which is obtained by coupling diazotized 1-Amino - 3 - chloranthracliinone with Acetessi, c, eäure-o-anisidid is available, and 60 parts by weight of iron powder. The esterification is carried out at 50-60 C.
After stirring for about one hour, the reaction mixture is added to a solution of 230 parts by weight of sodium carbonate in 4000 parts by weight of water and the mixture is distilled. the pyridine from in vacuo.
The aqueous solution of the leuco sulfuric acid ester, which is obtained after separating off the Eieeri sludge by filtration, is salted out with sodium chloride and the ester which has separated out is then filtered and pasted with about 2% sodium carbonate. The leuco-sulfuric acid ester, printed on cotton or artificial silk and developed in the usual way with acidic oxidizing agents, gives a vivid golden yellow with very good fastness properties.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE130440X | 1940-04-13 | ||
CH222255T | 1941-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH226630A true CH226630A (en) | 1943-04-15 |
Family
ID=25726619
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH226627D CH226627A (en) | 1940-04-13 | 1941-02-28 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226630D CH226630A (en) | 1940-04-13 | 1941-02-28 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226628D CH226628A (en) | 1940-04-13 | 1941-02-28 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226629D CH226629A (en) | 1940-04-13 | 1941-02-28 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH226627D CH226627A (en) | 1940-04-13 | 1941-02-28 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH226628D CH226628A (en) | 1940-04-13 | 1941-02-28 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
CH226629D CH226629A (en) | 1940-04-13 | 1941-02-28 | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (4) | CH226627A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2820787A (en) * | 1954-08-04 | 1958-01-21 | Gen Aniline & Film Corp | Anthraquinone azo dye |
-
1941
- 1941-02-28 CH CH226627D patent/CH226627A/en unknown
- 1941-02-28 CH CH226630D patent/CH226630A/en unknown
- 1941-02-28 CH CH226628D patent/CH226628A/en unknown
- 1941-02-28 CH CH226629D patent/CH226629A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH226628A (en) | 1943-04-15 |
CH226627A (en) | 1943-04-15 |
CH226629A (en) | 1943-04-15 |
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