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CH167402A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

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Publication number
CH167402A
CH167402A CH167402DA CH167402A CH 167402 A CH167402 A CH 167402A CH 167402D A CH167402D A CH 167402DA CH 167402 A CH167402 A CH 167402A
Authority
CH
Switzerland
Prior art keywords
dye
weight
parts
amino
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH167402A publication Critical patent/CH167402A/en

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Description

  

  Verfahren zur Darstellung eines     Farbstoffes.       Gegenstand vorliegenden Patentes ist  ein Verfahren zur Darstellung eines Farb  stoffes, welches dadurch gekennzeichnet ist.  dass man 2 . 5 -     Di    - (N -     acetylcarbazoyl    -     3'-          amino)-3.6-dichlor-1.4-benzochinon    in einem  hochsiedenden Lösungsmittel erhitzt.  



  <I>Beispiele:</I>  1. 200 Gewichtsteile     2.5-Di-(N-acetyl-          car        bazoyl-3'-amino)-3    .     6-dichlor-1    .     4-benzo-          chinon    werden in 3000 Gewichtsteilen     Nitro-          benzol    6 Stunden zum Sieden erhitzt. Das  Kondensationsprodukt wird nach dem Erkal  ten abgesaugt, mit Nitrobenzol und Alkohol  gewaschen und getrocknet. Es     ist    ein grau  grüner Stoff, der sich in konzentrierter  Schwefelsäure mit blauer Farbe löst;     sulfiert     färbt es Baumwolle in lichtechten blauviolet  ten Tönen an.  



  Das 2.     5-Di-(N-acetylcarbazoyl-3'-amino)-          3.6-dichlor-1.4-benzochinon    wird durch  Kondensation von     Chloranil    und 3-Amido-         N-acetylcarbazol    erhalten; es ist ein rötlich  brauner Stoff, der sich     violett    in konzen  trierter Schwefelsäure löst. Das     3-Amino-N-          acetylcarbazol    bildet sich bei der Reduktion  der entsprechenden     Nitroverbindung.     



  2. Eine Mischung von 1000 Gewichtstei  len     Trichlorbenzol,    45 Gewichtsteilen 3  Amino-N-acetyl-carbazol, 25 Gewichtsteilen       2.3.5.6-Tetrachlor-1        .4-benzochinon    und  von 17 Gewichtsteilen wasserfreiem Natrium  acetat werden nach Zugabe von 50 Gewichts  teilen 2 .     4-Dinitrophenol    auf 200 bis 210   C  geheizt und 6 Stunden bei dieser Temperatur  nachgerührt. Nach dem Erkalten wird das  ausgeschiedene Kondensationsprodukt abge  saugt und mit Nitrobenzol, Alkohol und  Wasser gewaschen. Er ist mit dem nach  Beispiel 1 erhaltenen Farbstoff identisch.



  Process for the preparation of a dye. The subject of the present patent is a method for displaying a dye, which is characterized. that one 2. 5 - Di - (N - acetylcarbazoyl - 3'-amino) -3.6-dichloro-1,4-benzoquinone heated in a high-boiling solvent.



  <I> Examples: </I> 1. 200 parts by weight of 2.5-di- (N-acetylcarbazoyl-3'-amino) -3. 6-dichloro-1. 4-benzoquinone are heated to boiling in 3000 parts by weight of nitrobenzene for 6 hours. After cooling, the condensation product is filtered off with suction, washed with nitrobenzene and alcohol and dried. It is a gray-green substance that dissolves in concentrated sulfuric acid with a blue color; sulfated, it stains cotton in lightfast blue-violet tones.



  The 2. 5-di- (N-acetylcarbazoyl-3'-amino) -3,6-dichloro-1,4-benzoquinone is obtained by condensation of chloranil and 3-amido-N-acetylcarbazole; it is a reddish brown substance that dissolves in purple in concentrated sulfuric acid. The 3-amino-N-acetylcarbazole is formed when the corresponding nitro compound is reduced.



  2. A mixture of 1000 parts by weight of trichlorobenzene, 45 parts by weight of 3 amino-N-acetyl-carbazole, 25 parts by weight of 2.3.5.6-tetrachloro-1 .4-benzoquinone and 17 parts by weight of anhydrous sodium acetate are added after adding 50 parts by weight 2. 4-Dinitrophenol heated to 200 to 210 C and stirred for 6 hours at this temperature. After cooling, the precipitated condensation product is filtered off with suction and washed with nitrobenzene, alcohol and water. It is identical to the dye obtained in Example 1.

Claims (1)

PATENTANSPRUCH; Verfahren zur Darstellung eines Farb stoffes, dadurch gekennzeichnet, dass man 2 . 5-Di-(N-acetylcarbazoyl-3\-amino)-3. 6-di- chlor-1 . 4-benzochinon in einem hochsieden den Lösungsmittel erhitzt. Der so erhaltene Farbstoff löst sich in konzentrierter Schwefelsäure mit blauer Farbe. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurcli gekennzeichnet, dass man Nitrobenzol als Lö sungsmittel verwendet. PATENT CLAIM; Method for the representation of a dye, characterized in that 2. 5-di (N-acetylcarbazoyl-3 \ -amino) -3. 6-dichloro-1. 4-benzoquinone heated in a high boiling the solvent. The dye thus obtained dissolves in concentrated sulfuric acid with a blue color. SUBClaim: Method according to claim, characterized by the fact that nitrobenzene is used as a solvent.
CH167402D 1929-05-30 1933-01-26 Process for the preparation of a dye. CH167402A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH148120T 1929-05-30
DE167402X 1932-01-27

Publications (1)

Publication Number Publication Date
CH167402A true CH167402A (en) 1934-02-15

Family

ID=25715153

Family Applications (1)

Application Number Title Priority Date Filing Date
CH167402D CH167402A (en) 1929-05-30 1933-01-26 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH167402A (en)

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