CH139704A - Process for the preparation of a nitrogenous vat dye. - Google Patents
Process for the preparation of a nitrogenous vat dye.Info
- Publication number
- CH139704A CH139704A CH139704DA CH139704A CH 139704 A CH139704 A CH 139704A CH 139704D A CH139704D A CH 139704DA CH 139704 A CH139704 A CH 139704A
- Authority
- CH
- Switzerland
- Prior art keywords
- mol
- preparation
- works
- acid
- amino
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
Verfahren zur Darstellung eines stickstoffhaltigen Küpenfarbstoffes. Im Hauptpatent ist ein Verfahren zur Darstellung eines stickstaffUaltigen Küpen- farbstoffes beschrieben, bei dem man 1 Mol. des durch Behandlung vom. Pyranthron mit Halogen in Chlorsulfonsäure erhältlichen Te- trahalogenpyranthrons mit 8 Mol. :des :durch Nitrieren von Diibenzauthron mit ;
Salpeter- säure in Nitrobenzol und Reduktion der entstandenen Nitroverbindung erhältlichen Aminodibenzanthrons und 1 Mol. 1-Amino- anthrachinoon umsetzt.
Es wurde nun gefunden, d,ass man einen neuen Küpenfarbstoff erhält, wenn man 1 Mol. Tetrahaloogeniso,dibenzanthron, erhält lich durch Halogenieren von Iso,dibenz- anthron in Chlorsu'lfons@äure, mit 2 Mol. 5- Amino - 4'- benzoylamino - l . l'- anthrimidear- bazol und 2 Mol. 1-Aminoanthrachiuon um setzt.
Die Kondensation führt man zweck mässig in hochsiedenden Verdünnungsmitteln und unter Zusatz von säurebindenden Mit- teln, wie Natriumoacetat, aus. Vielfach ist es von Vorteil, Katalysatoren, beispielsweise Kupferverbindungen, zuzusetzen.
Der neue Farbstoff löst sich in konzen- trierter Schwefelsäure mit brauner Farbe und gibt mit alkalischer lIydrosülfitlösung eine :braune Küpenlösung, aus der :die pflanz liche Faser in :grauen bis schwarzen, hervor ragend echten Tönen gefärbt wird.
<I>Beispiel:</I> 7,8 Teile Tetrajbromisoidibenzanthron (dar gestellt durch Bromtieren vom. Iso,dibenzan- thron in Chlorsulfonsäure) werden in 250 Teilen Nitrobenzol mit 14 Teilen 5-Amino- 4'-benzoylamina-1 .
1'-anthrimiclcar#b,azol, 4,6 Teilen 1-Aminaanthrachino#n, 10 Teilen Na- triumacetat und 2 Teilen Kupferoxyd so lange unter Rühren gekocht, Abis das Reak tionsprodukt praktisch bromfrei ist. Dann arbeitet man in :der üblichen Weise auf.
Process for the preparation of a nitrogenous vat dye. The main patent describes a process for the preparation of a stickstaffUaltigen vat dye, in which 1 mol. Of the by treatment from. Pyranthrone with halogen in chlorosulfonic acid available tetrahalogenpyranthrone with 8 mol.: Des: by nitrating diibenzauthrone with;
Nitric acid in nitrobenzene and reduction of the resulting nitro compound converts available aminodibenzanthrone and 1 mol. 1-Aminoanthraquinone.
It has now been found that a new vat dye is obtained if 1 mol. Tetrahaloogeniso, dibenzanthrone, obtainable by halogenating iso, dibenzanthrone in chlorosulfonic acid, with 2 mol. 5-amino-4 ' - benzoylamino - l. l'-anthrimidearbazole and 2 mol. 1-Aminoanthrachiuon to sets.
The condensation is expediently carried out in high-boiling diluents and with the addition of acid-binding agents, such as sodium acetate. It is often of advantage to add catalysts, for example copper compounds.
The new dye dissolves in concentrated sulfuric acid with a brown color and, with an alkaline hydrosulphate solution, gives a: brown vat solution from which: the vegetable fibers are dyed in gray to black, exceptionally real shades.
<I> Example: </I> 7.8 parts of tetrajbromisoidibenzanthron (made by bromination of. Iso, dibenzanthrone in chlorosulfonic acid) are in 250 parts of nitrobenzene with 14 parts of 5-amino-4'-benzoylamina-1.
1'-anthrimiclcar # b, azole, 4.6 parts of 1-aminaanthraquinone, 10 parts of sodium acetate and 2 parts of copper oxide are boiled with stirring until the reaction product is practically bromine-free. Then you work up in: the usual way.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139704X | 1927-10-18 | ||
CH138317T | 1928-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH139704A true CH139704A (en) | 1930-04-30 |
Family
ID=25713155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH139704D CH139704A (en) | 1927-10-18 | 1928-10-01 | Process for the preparation of a nitrogenous vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH139704A (en) |
-
1928
- 1928-10-01 CH CH139704D patent/CH139704A/en unknown
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