DE717075C - Process for the preparation of water-soluble dyes - Google Patents
Process for the preparation of water-soluble dyesInfo
- Publication number
- DE717075C DE717075C DEH150273D DEH0150273D DE717075C DE 717075 C DE717075 C DE 717075C DE H150273 D DEH150273 D DE H150273D DE H0150273 D DEH0150273 D DE H0150273D DE 717075 C DE717075 C DE 717075C
- Authority
- DE
- Germany
- Prior art keywords
- water
- preparation
- soluble dyes
- dyes
- soluble
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- C09B57/00—Other synthetic dyes of known constitution
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Pyridine Compounds (AREA)
Description
Verfahren zur Herstellung von wasserlöslichen Farbstoffen Im Patent 7o4 927 ist ein Verfahren zur Herstellung von Farbstoffen beschrieben. Das Verfahren ist dadurch gekennzeichnet, daß o-Halogenarylallyllzetone mit Cuprocyanid gegebenenfalls in Gegenwart von Pyridin oder Chinolin erhitzt werden.Process for the preparation of water-soluble dyes In the patent 7o4 927 describes a process for the production of dyes. The procedure is characterized in that o-haloarylallyllzetones with cuprocyanide, if appropriate be heated in the presence of pyridine or quinoline.
Es wurde nun gefunden, daß durch Sulfonierung dieser Produkte wasserlösliche Sulfonsäuren von wertvollen Eigenschaften erhalten werden können. Die erhältlichen Sulfonsäuren zeigen eine grüne Nuance und vereinigen diese Eigenschaft mit einer überraschend guten Substantivität zu pflanzlichen Fasern und mit hervorragenden Echtheitseigenschaften, speziell einer ausgezeichneten Wasch- und Seifenechtheit.It has now been found that sulfonation of these products makes them water-soluble Sulphonic acids of valuable properties can be obtained. The available Sulphonic acids show a green shade and combine this property with one surprisingly good substantivity to vegetable fibers and with excellent Fastness properties, especially excellent wash and soap fastness.
Das Gelingen des neuen Verfahrens war nicht voraussehbar. Es stand zu befürchten, daß unter den Einfluß der Schwefelsäure 0 Herausspaltung des Metalls oder sonstige oxydative Aufspaltung des Moleküls erfolgen würde.The success of the new procedure was not foreseeable. It stood it is to be feared that under the influence of sulfuric acid 0 splitting out of the metal or other oxidative splitting of the molecule would occur.
Beispiel I Teile des nach Beispiel i des Patents 7o4 927 erhaltenen Farbstoffs werden in I5o Teilen Schwefelsäure von etwa 2o% Anhydridgehalt unter Rühren gelöst; die Temperatur wird bei Io bis I5° gehalten. Nach i 2stündiger Dauer der Reaktion gießt man auf Eis und filtriert die ausgefallene. Farbstoffsulfonsäure ab. Dieselbe ist in Wasser leicht löslich mit schmutzig olivgrüner Farbe; aus der wäßrigen Lösung kann sie durch Aussalzen wieder abgeschieden werden. Die erhältliche Sulfonsäure kann in üblicher Weise zum Färben von Baumwolle nach Art der substantiven Farbstoffe benutzt werden. Beispiel 6o Teile des im Beispiel I des Patents 7o4927 beschriebenen Farbstoffs werden in 2ooo Teilen konzentrierter Schwefelsäure so lange auf too° erhitzt, bis eine Probe der Sulfonierungsschmelze in viel Wasser klar löslich ist. Man gießt auf Eis und filtriert die ausgefallene Farbstoffstifonsäure ab.Example I Parts of that obtained according to Example i of patent 704,927 The dye contains 15o parts of sulfuric acid with an anhydride content of about 20% Stirring dissolved; the temperature is kept at 10 to 15 °. After i 2 hours the reaction is poured onto ice and the precipitated product is filtered off. Dye sulfonic acid away. It is easily soluble in water, with a dirty olive green color; from the aqueous solution it can be deposited again by salting out. The available Sulphonic acid can be used in the usual way for dyeing cotton in the substantive manner Dyes are used. Example 6o parts of the example I des Patent 7o4927 the dye described are in 2ooo parts of concentrated sulfuric acid Heated to too ° until a sample of the sulphonation melt is poured into plenty of water is clearly soluble. It is poured onto ice and the precipitated dye stifonic acid is filtered off away.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH150273D DE717075C (en) | 1937-01-17 | 1937-01-17 | Process for the preparation of water-soluble dyes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH150273D DE717075C (en) | 1937-01-17 | 1937-01-17 | Process for the preparation of water-soluble dyes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE717075C true DE717075C (en) | 1942-02-05 |
Family
ID=7180888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEH150273D Expired DE717075C (en) | 1937-01-17 | 1937-01-17 | Process for the preparation of water-soluble dyes |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE717075C (en) |
-
1937
- 1937-01-17 DE DEH150273D patent/DE717075C/en not_active Expired
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