CH139810A - Process for the production of a brown vat dye of the anthanthrone series. - Google Patents
Process for the production of a brown vat dye of the anthanthrone series.Info
- Publication number
- CH139810A CH139810A CH139810DA CH139810A CH 139810 A CH139810 A CH 139810A CH 139810D A CH139810D A CH 139810DA CH 139810 A CH139810 A CH 139810A
- Authority
- CH
- Switzerland
- Prior art keywords
- brown
- production
- red
- color
- vat dye
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines braunen Nüpenfarbstoifes der Anthanthronreihe. Es wurde gefunden, däss man echte, leb haft braun färbende Küpenfarbstofrfe er hält, wenn man Halogenanthanthrone mit 1-Amino-.anthrachinon - 2 - ald-ehyd konden siert.
Es ist anzunehmen, dass in dieser Re aktion zuerst Halagenwasserstof f abgespal ten wird und die so .erhaltenen Anthrimide im weiteren Reaktionsverlauf unter ZVasser- abspaltung und unter Bildung vorn Akridin- ringen kondensiert werden.
Vorliegendes Patent bezieht sich nun auf ein Verfahren zur Herstellung des Küpen- farbstoffes ider wa.hrscheinliehen Formel:
EMI0001.0021
ida-durch gekennzeichnet, Jass man Monobrom- anthanthron mit 1-@A,minoanthrachinon-2-a.1- dehyd. bei höherer Temperatur zur Um setzung bringt.
Der neue Farbstoff löst sieh in konzen trierter Schwefelsäure mit roter Farbe, in heissem Nitrobenzal oder Trichlorbenzol mit gelbbrauner Farbe und kristallisiert aus letzteren Lösungsmitteln beim Erkalten in braunen,' oft zuSternchenangeordneten Stäbchen ,aus. Er färbt Baumwolle aus rot violetter Hyd@rosul.fitküpe in ebensolcher Farbe an, welche .beim Seifen in ein leb haftes, rotstiehiges Gelbbraun von sehr gu ter Echtheit übergeht.
Beispiel: 3,85 Teile Monobrom-a.nthanthron (siehe Schweizerisches Patent Nr: 130617) .und 2,5 Teile 1-Aminoanthrachinon-2-aldehyd wer den in 100 Teilen Nitrobenzol unter Zusatz von 2 Teilen wasserifreiem Natriumacetat und einer geringen Menge Kupfer oder Kupfersalz als Katalysator einige Stunden unter Rühren zum Sieden erhitzt.
Nach .dem Erkalten wird das in braunen Kristallen aus geschiedene Reaktionsprodukt abgesaugt, auf die übliehe Weise von anhaftendem Lö sungsmittel und Salzen befreit und ge trocknet.
Process for the production of a brown nub dye of the anthanthron series. It has been found that real vat dyes with a vivid brown color are obtained if halanthanthrones are condensed with 1-amino-anthraquinone-2-aldehyde.
It can be assumed that in this reaction hydrogen halide is first split off and the anthrimides thus obtained are condensed in the further course of the reaction with elimination of water and formation of acridine rings.
The present patent now relates to a process for the production of the vat dye with the formula:
EMI0001.0021
ida-characterized by, Jass one monobromo anthanthrone with 1- @ A, minoanthraquinone-2-a.1-dehyd. at a higher temperature to implement.
The new dye dissolves in concentrated sulfuric acid with a red color, in hot nitrobenzal or trichlorobenzene with a yellow-brown color, and crystallizes from the latter solvents on cooling in brown rods, often arranged in asterisks. He dyes cotton from red-violet Hyd@rosul.fitküpe in the same color, which turns into a lively, reddish yellow-brown of very good authenticity when soaping.
Example: 3.85 parts of monobromo-a.nthanthrone (see Swiss Patent No: 130617) and 2.5 parts of 1-aminoanthraquinone-2-aldehyde are added to 100 parts of nitrobenzene with 2 parts of anhydrous sodium acetate and a small amount of copper or copper salt as a catalyst heated to boiling for a few hours with stirring.
After cooling, the reaction product, which has separated out in brown crystals, is filtered off with suction, freed from adhering solvents and salts in the usual way and dried.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139810X | 1927-08-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH139810A true CH139810A (en) | 1930-05-15 |
Family
ID=5667921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH139810D CH139810A (en) | 1927-08-30 | 1928-08-15 | Process for the production of a brown vat dye of the anthanthrone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH139810A (en) |
-
1928
- 1928-08-15 CH CH139810D patent/CH139810A/en unknown
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