CH100706A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

Info

Publication number
CH100706A
CH100706A CH100706DA CH100706A CH 100706 A CH100706 A CH 100706A CH 100706D A CH100706D A CH 100706DA CH 100706 A CH100706 A CH 100706A
Authority
CH
Switzerland
Prior art keywords
red
preparation
vat dye
vat
violet
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Kalle Co
Original Assignee
Kalle & Co 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 Kalle & Co Ag filed Critical Kalle & Co Ag
Publication of CH100706A publication Critical patent/CH100706A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/62—Cyclic imides or amidines of peri-dicarboxylic acids of the anthracene, benzanthrene, or perylene series

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Description

  

  Verfahren zur Darstellung eines     Nüpenfarbstoffes.       Es ist gefunden worden, dass die     Perylen-          3.        .f    . 9 .     10-Tetracarbons < iure    sich mit     Am-          inoniak    oder Aminen kondensiert und dass  dabei wertvolle     Küpenfarbstoffe    entstehen.  Gegenstand dieses Hauptpatentes ist die Dar  stellung eines     Küpenfarbstoffes    aus     Perylen-          tetracarbonsäure    und Anilin.

           Beispiel            392    Gewichtsteile     Perylentetracarbon-          ,    nhydrid werden mit etwa 3000 Ge  <I>s</I> äurea       wiehtsteilen    Anilin unter Rühren auf etwa  <B>185</B>   bis zum Verschwinden des     Perylen-          tetracarboiis".iureanhydrids    erhitzt. Das Kon  densationsprodukt scheidet sich dabei     kristal-          liniseli    ab. Nach     beendeter        Kondensation    lässt  man etwas abkühlen und drückt dann in ver  dünnte Salzsäure, die das überschüssige Ani  lin aufnimmt.

   Man filtriert sodann den Farb  stoff ab,     wäscht    mit Wasser nach und zieht  schliesslich mit heisser, verdünnter Kalilauge  zur Entfernung geringer     alkalilöslicher    Ver  unreinigungen aus. Die Ausbeute ist fast  quantitativ.    Der Farbstoff wird in braunroten Kristall  nadeln erhalten. -     Seine    Lösung in konzen  trierter Schwefelsäure erscheint in dicker  Schicht violett, in dünner Schicht blau ge  färbt; sie fluoresziert rot.  



  Mit alkalischem     Hydrosulfit    erhält man       eine    rotviolette     Küpe,    aus der Baumwolle  in echten roten Tönen ausgefärbt wird.



  Process for the preparation of a pebble dye. It has been found that the perylene 3. .f. 9. 10-tetracarboxylic acid condenses with ammonia or amines and valuable vat dyes are formed. The subject of this main patent is the presentation of a vat dye made from perylenetetracarboxylic acid and aniline.

           EXAMPLE 392 parts by weight of perylene tetracarbonic anhydride are heated with about 3000 parts by weight of aniline with stirring to about 185 until the perylene tetracarbonic acid has disappeared. The condensation product After the condensation has ended, the mixture is allowed to cool down a little and then pressed into dilute hydrochloric acid, which absorbs the excess aniline.

   The dye is then filtered off, rewashed with water and finally drawn off with hot, dilute potassium hydroxide solution to remove minor alkali-soluble impurities. The yield is almost quantitative. The dye is obtained in brown-red crystal needles. - Its solution in concentrated sulfuric acid appears violet in a thick layer and blue in a thin layer; it fluoresces red.



  With alkaline hydrosulphite you get a red-violet vat, from which cotton is dyed in real red tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man Perylentetracarbonsäure und Anilin aufein ander einwirken lässt, wobei ein Produkt ent steht, das in braunroten Nadeln kristallisiert, in konzentrierter Schwefelsäure mit blau violetter, rot fluoreszierender Farbe löslich ist und das mit alkalischem Hydrosulfit eine rotviolette Küpe bildet, aus der Baumwolle echt rot gefärbt wird. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that perylenetetracarboxylic acid and aniline are allowed to act on one another, a product which crystallizes in red-brown needles, is soluble in concentrated sulfuric acid with a blue-violet, red-fluorescent color and that with alkaline hydrosulphite forms a red-violet vat from which cotton is dyed real red.
CH100706D 1923-01-03 1923-01-03 Process for the preparation of a vat dye. CH100706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH100706T 1923-01-03

Publications (1)

Publication Number Publication Date
CH100706A true CH100706A (en) 1923-08-16

Family

ID=4359004

Family Applications (1)

Application Number Title Priority Date Filing Date
CH100706D CH100706A (en) 1923-01-03 1923-01-03 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH100706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543747A (en) * 1948-08-27 1951-03-06 Gen Aniline & Film Corp Preparation of n.n'-diaryl derivatives of perylene diimid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543747A (en) * 1948-08-27 1951-03-06 Gen Aniline & Film Corp Preparation of n.n'-diaryl derivatives of perylene diimid

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