CH105721A - Process for the preparation of diaminoperylenequinone. - Google Patents

Process for the preparation of diaminoperylenequinone.

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Publication number
CH105721A
CH105721A CH105721DA CH105721A CH 105721 A CH105721 A CH 105721A CH 105721D A CH105721D A CH 105721DA CH 105721 A CH105721 A CH 105721A
Authority
CH
Switzerland
Prior art keywords
quinone
violet
preparation
diaminoperylene
diaminoperylenequinone
Prior art date
Application number
Other languages
German (de)
Inventor
Pereira Hans
Original Assignee
Pereira Hans
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 Pereira Hans filed Critical Pereira Hans
Publication of CH105721A publication Critical patent/CH105721A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung von     Diaminoperylenchinon.       Es hat sich herausgestellt, dass das bis  her unbekannte     Diaminoperylenchinon    Baum  wolle in sehr tiefen dunklen Tönen anfärben  kann, im Gegensatz zu den     Aminoanthra-          chinonen    also einen brauchbaren     Küpenfarb-          stoff    vorstellt. Das     Diaminoperylenchinon    wird  gemäss vorliegendem Verfahren durch Be  handeln des     Dinitroperylenchinons    mit Re  duktionsmitteln erhalten.  



  <I>Beispiel:</I>  Zu einer Aufschlämmung von einem Teil       Dinitroperylenchinon    in 50 Gewichtsteilen  5      /o    wässeriger Natronlauge fügt man unter  Erwärmen und Umrühren so lange     Natrium-          hydrosulfit    zu, bis der     Nitrokörper    gelöst ist.  Man erhält dadurch eine tief violette     güpe.     Nach 10 Minuten langem Erwärmen leitet  man durch die heisse Flüssigkeit einen kräf  tigen Luftstrom, wobei die Lösung entfärbt  wird und das     Diaminoperylenchinon    sich als  dunkles Pulver abscheidet.  



  Dieses ist in Eisessig, Benzol, Alkohol,       .Äther    unlöslich, in Anilin aber in der Wärme    mit violetter Farbe löslich. Zur Reinigung  kristallisiert man den Körper aus Anilin um,  wobei man ihn in dunklen,     metalliscbglän-          zenden    Nadeln erhält. In konzentrierter  Schwefelsäure löst er sich mit roter Farbe  auf.  



  Die     Küpe    ist blauviolett, Baumwolle wird  violett gefärbt.



  Process for the preparation of diaminoperylenequinone. It has been found that the hitherto unknown diaminoperylene quinone can dye tree wool in very deep, dark tones, so in contrast to the aminoanthraquinones it is a useful vat dye. The diaminoperylene quinone is obtained according to the present process by treating the dinitroperylene quinone with reducing agents.



  <I> Example: </I> Sodium hydrosulfite is added to a slurry of one part of dinitroperylene quinone in 50 parts by weight of 5 / o aqueous sodium hydroxide solution with heating and stirring until the nitro body is dissolved. This gives a deep purple güpe. After 10 minutes of warming, a vigorous stream of air is passed through the hot liquid, the solution becoming discolored and the diaminoperylene quinone separating out as a dark powder.



  This is insoluble in glacial acetic acid, benzene, alcohol, ether, but soluble in aniline with a violet color when heated. For cleaning, the body is recrystallized from aniline, which is obtained in dark, shiny metallic needles. In concentrated sulfuric acid it dissolves with a red color.



  The vat is blue-violet, cotton is colored violet.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Diamino- perylenchinon, dadurch gekennzeichnet, dass man Dinitroperylenchinon mit Reduktions mitteln behandelt. Das Diaminoperylenchinon kristallisiert in dunklen, metallisch glänzen den Nadeln, löst sich in Schwefelsäure mit roter Farbe, in Anilin in der Wärme mit violetter Farbe, ist in Eisessig, Benzol, Alko hol, Äther unlöslich und liefert eine blau violette, Baumwolle violett färbende Küpe. PATENT CLAIM: Process for the preparation of diamino perylene quinone, characterized in that dinitroperylene quinone is treated with reducing agents. The diaminoperylene quinone crystallizes in dark, metallic needles, dissolves in sulfuric acid with a red color, in aniline in the warmth with a violet color, is insoluble in glacial acetic acid, benzene, alcohol and ether and produces a blue-violet, cotton-violet-colored vat.
CH105721D 1922-06-20 1923-06-11 Process for the preparation of diaminoperylenequinone. CH105721A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT105721X 1922-06-20

Publications (1)

Publication Number Publication Date
CH105721A true CH105721A (en) 1924-07-01

Family

ID=3623266

Family Applications (1)

Application Number Title Priority Date Filing Date
CH105721D CH105721A (en) 1922-06-20 1923-06-11 Process for the preparation of diaminoperylenequinone.

Country Status (1)

Country Link
CH (1) CH105721A (en)

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