AT73006B - Process for the preparation of greenish blue dyes of the anthraquinone series. - Google Patents
Process for the preparation of greenish blue dyes of the anthraquinone series.Info
- Publication number
- AT73006B AT73006B AT73006DA AT73006B AT 73006 B AT73006 B AT 73006B AT 73006D A AT73006D A AT 73006DA AT 73006 B AT73006 B AT 73006B
- Authority
- AT
- Austria
- Prior art keywords
- preparation
- blue dyes
- greenish blue
- anthraquinone series
- parts
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
EMI1.1
Durch das Stammpatent Nr. 70643 ist ein Verfahren zur Darstellung von wasserlöslichen grünstichig-blauen Farbstoffen geschützt, darin bestehend, dass man l-Amino- - 4-halogenantbrachinon-2-sulfosäuren mit aromatischen Aminen, Wasser und Kupfer oder
EMI1.2
Bei weiterer Verfolgung des Verfahrens wurde festgestellt, dass es sich auch unter Ausschluss von Kupfer oder Kupferverbindungen ausführen lässt. Man wendet zweckmässig Temperaturen über 1000 aD, indem man die Kondensation im Druckkessel vornimmt.
Beispiele :
1. Eine Mischung von 50 Teilen 1-Amino-4-bromanthrachinon-2-sulfosäure, 30 Teilen Soda, 50 Teilen 4-Toluidin und 500 Teilen Wasser wird im Autoklaven 2 Stunden auf 140 bis 1450 erhitzt. Das Reaktionsprodukt wird durch Dampf von Toluidin befreit, angesäuert und mit wenig Chlorkalium versetzt. Man filtriert und wäscht mit verdünnter Chlorkaliumlösung.
2. 2 Teile l-Amino-4-bromanthrachinon-2-sulfosäure, 1 Teil anthranilsaures Kalium und 20 Teile Wasser werden im Autoklaven 3 Stunden auf 120 bis 1250 erhitzt. Die 1-Amino-4-o-carboxyphenylaminoanthrachinon-2-sulfosäure wird aus der angesäuerten blanen Lösung durch Zusatz von Kochsalz gefällt. Sie bildet ein blaues Pulver, das sich in Wasser und Alkohol mit blauer, in konzentrierter Schwefelsäure mit grüner Farbe löst.
Beim Erwärmen der schwefeisauren Lösung schlagt die grüne Farbe nach Gelbrot um.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
EMI1.1
A process for the preparation of water-soluble greenish-blue dyes is protected by the parent patent No. 70643, which consists in mixing l-amino- 4-halantbrachinone-2-sulfonic acids with aromatic amines, water and copper or
EMI1.2
When the process was pursued further, it was found that it can also be carried out with the exclusion of copper or copper compounds. It is expedient to use temperatures above 1000 aD by carrying out the condensation in the pressure vessel.
Examples:
1. A mixture of 50 parts of 1-amino-4-bromoanthraquinone-2-sulfonic acid, 30 parts of soda, 50 parts of 4-toluidine and 500 parts of water is heated to 140 to 1450 for 2 hours in an autoclave. The reaction product is freed from toluidine by steam, acidified and mixed with a little potassium chloride. It is filtered and washed with dilute potassium chloride solution.
2. 2 parts of 1-amino-4-bromoanthraquinone-2-sulfonic acid, 1 part of potassium anthranil and 20 parts of water are heated to 120 to 1250 for 3 hours in an autoclave. The 1-amino-4-o-carboxyphenylaminoanthraquinone-2-sulfonic acid is precipitated from the acidified white solution by adding sodium chloride. It forms a blue powder that dissolves in water and alcohol with blue color, in concentrated sulfuric acid with green color.
When the sulfuric acid solution is heated, the green color changes to yellow-red.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE70643X | 1913-07-14 | ||
DE517062X | 1914-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT73006B true AT73006B (en) | 1917-01-25 |
Family
ID=25749534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT73006D AT73006B (en) | 1913-07-14 | 1915-04-17 | Process for the preparation of greenish blue dyes of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT73006B (en) |
-
1915
- 1915-04-17 AT AT73006D patent/AT73006B/en active
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