CH120717A - Process for the preparation of isodibenzanthrone. - Google Patents

Process for the preparation of isodibenzanthrone.

Info

Publication number
CH120717A
CH120717A CH120717DA CH120717A CH 120717 A CH120717 A CH 120717A CH 120717D A CH120717D A CH 120717DA CH 120717 A CH120717 A CH 120717A
Authority
CH
Switzerland
Prior art keywords
preparation
violet
isodibenzanthrone
bzl
dissolves
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 CH120717A publication Critical patent/CH120717A/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/22—Dibenzanthrones; Isodibenzanthrones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
    • C07C45/72—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 119233.    Verfahren zur Darstellung von     Isodibenzanthron.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung von     Isodibenz-          anthron.    Das Verfahren besteht darin, dass  man     Bzl-Thioxylenylbenzanthron    folgender  Formel  
EMI0001.0006     
    mit alkalischen Kondensationsmitteln, insbe  sondere alkoholischem Alkali,     behandelt.     



  <I>Beispiel:</I>  In eine Schmelze von     äthylalkoholischem     Kali, hergestellt durch Erhitzen von 100 Ge  wichtsteilen Kalihydrat und 100 Gewichts  teilen     Äthylalkohol    auf 135   unter     Abdestil-          lieren    des überschüssigen Alkohols, trägt man  bei 135 bis 140   25 Gewichtsteile     Bzl-Thio-          xylenylbenzanthron,    erhältlich zum Beispiel  durch mehrstündiges     Kochen    von     Bzl-Chlor-          benzanthron    mit     Thioxylenol    und Pottasche  in     Trichlorbenzollösung,    -ein und rührt die  Schmelze eine Stunde bei 140  .

   Nach dieser  Zeit verdünnt man mit Wasser, leitet in die  Suspension Luft ein, solange noch Farbstoff    in Form der Hydroverbindung in Lösung ist,  filtriert und wäscht mit Wasser gut aus. Der  erhaltene Farbstoff ist     Isodibenzanthron,     welches praktisch vollständig frei von     Di-          benzanthron    ist. Er stellt ein dunkelviolettes  Pulver dar, das sich in konzentrierter Schwe  felsäure mit rein grüner Farbe löst und  Baumwolle aus blauvioletter     Hydrosulfit-          küpe        rotstichig    violett färbt.  



  An Stelle von Äthylalkohol     kann    man  auch andere Alkohole, an Stelle von Kali  hydrat andere     Ätzalkalien    verwenden.



      Additional patent to the main patent No. 119233. Process for the preparation of isodibenzanthrone. The subject of this additional patent is a process for the preparation of isodibenzanthrone. The procedure consists in that you get Bzl-Thioxylenylbenzanthron following formula
EMI0001.0006
    treated with alkaline condensation agents, in particular special alcoholic alkali.



  <I> Example: </I> In a melt of ethyl alcoholic potash, produced by heating 100 parts by weight of potassium hydrate and 100 parts by weight of ethyl alcohol to 135 while distilling off the excess alcohol, 25 parts by weight of Bzl-Thio are added at 135 to 140 xylenylbenzanthrone, obtainable, for example, by boiling Bzl-chlorobenzanthrone with thioxylenol and potash in trichlorobenzene solution for several hours, and stir the melt for one hour at 140.

   After this time, it is diluted with water, air is passed into the suspension while the dye is still in solution in the form of the hydrocompound, filtered and washed thoroughly with water. The dye obtained is isodibenzanthrone, which is practically completely free from dibenzanthrone. It is a dark violet powder that dissolves in concentrated sulfuric acid with a pure green color and turns cotton from a blue-violet hydrosulfite vat into a reddish violet.



  Instead of ethyl alcohol, other alcohols can be used, and other caustic alkalis can be used instead of potassium hydrate.

Claims (1)

PATENTANSPRUCH: Verfahren. zur Darstellung von Isodibenz- anthron, dadurch gekennzeichnet, dass man Bzl-Thioxylenylbenzanthron mit einem al kalischen Kondensationsmittel behandelt. Der so erhaltene Farbstoff stellt ein dun kelviolettes Pulver dar, das sich in konzen trierter Schwefelsäure mit rein grüner Farbe löst und Baumwolle aus blauvioletter Ilydro- sulfitküpe rotstichig violett färbt. PATENT CLAIM: Process. for the preparation of isodibenz anthrone, characterized in that Bzl-thioxylenylbenzanthrone is treated with an alkaline condensation agent. The dye obtained in this way is a dark violet powder which dissolves in concentrated sulfuric acid with a pure green color and dyes cotton from a blue-violet Ilydrosulfitküpe reddish violet.
CH120717D 1925-11-02 1925-11-02 Process for the preparation of isodibenzanthrone. CH120717A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH120717T 1925-11-02
CH119233T 1927-12-05

Publications (1)

Publication Number Publication Date
CH120717A true CH120717A (en) 1927-07-01

Family

ID=25709224

Family Applications (1)

Application Number Title Priority Date Filing Date
CH120717D CH120717A (en) 1925-11-02 1925-11-02 Process for the preparation of isodibenzanthrone.

Country Status (1)

Country Link
CH (1) CH120717A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123285B (en) * 1959-07-28 1962-02-08 Basf Ag Dyeing and printing of structures made of linear fiber-forming polyesters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123285B (en) * 1959-07-28 1962-02-08 Basf Ag Dyeing and printing of structures made of linear fiber-forming polyesters

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