CH120719A - Process for the preparation of isodibenzanthrone. - Google Patents

Process for the preparation of isodibenzanthrone.

Info

Publication number
CH120719A
CH120719A CH120719DA CH120719A CH 120719 A CH120719 A CH 120719A CH 120719D A CH120719D A CH 120719DA CH 120719 A CH120719 A CH 120719A
Authority
CH
Switzerland
Prior art keywords
isodibenzanthrone
preparation
violet
bzl
dye
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 CH120719A publication Critical patent/CH120719A/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

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

Description

  

      Verfahren    zur Darstellung von     Isodibenzanthron.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung von     Isodibenz-          anthron.    Das Verfahren besteht     darin,    dass  man     Bzl-Dichlorthiophenylbenzanthron    fol  gender Formel:  
EMI0001.0007     
    mit alkalischen Kondensationsmitteln, ins  besondere alkoholischem Alkali, behandelt.  



  <I>Beispiel:</I>  In eine Schmelze von     äthylalkoholischem     Kali, hergestellt durch Erhitzen von 100 Ge  wichtsteilen Kalihydrat und<B>100</B> Gewichts  teilen Äthylalkohol auf 135   unter     Abdestil-          lieren    des überschüssigen Alkohols, trägt man  bei<B>135</B> bis 140' 25 Gewichtsteile     Bzl-Di-          chlorthiophenylbenzanthron,    erhältlich zum  Beispiel     durch    mehrstündiges Kochen von       Bzl-Chlorbenzanthron    mit Pottasche,     Di-          chlorthiophenol    und     Trichlorbenzol,    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 Was  ser gut aus. Der erhaltene Farbstoff ist     Iso-          dibenzäntlhron,    welches praktisch vollständig  frei von     Dibenzanthron    ist. Er stellt ein  dunkelviolettes .Pulver dar, das sieh in kon  zentrierter Schwefelsäure mit rein grüner  Farbe löst und Baumwolle aus blauvioletter       Hydrosulfitküpe        rotstichig    violett färbt.  



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



      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 one Bzl-Dichlorthiophenylbenzanthron following gender formula:
EMI0001.0007
    treated with alkaline condensation agents, especially alcoholic alkali.



  <I> Example: </I> In a melt of ethyl alcoholic potash, produced by heating 100 parts by weight of potash hydrate and <B> 100 </B> parts by weight of ethyl alcohol to 135 while distilling off the excess alcohol, add < B> 135 </B> to 140 '25 parts by weight of Bzl-dichlorothiophenylbenzanthrone, obtainable, for example, by boiling Bzl-chlorobenzanthrone with potash, dichlorothiophenol and trichlorobenzene 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 in the form of the hydrocompound is still in solution, 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 dyes cotton from a blue-violet hydrosulfite vat 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-Dichlorthiophenylbenzanthron mit einen alkalischen 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 Hydro- sulfitküpe rotstichig violett färbt. PATENT CLAIM: Process for the preparation of isodibenzanthrone, characterized in that Bzl-dichlorothiophenylbenzanthrone is treated with an alkaline condensation agent. The dye thus obtained is a dark violet powder which dissolves in concentrated sulfuric acid with a pure green color and dyes cotton from a blue-violet hydrosulfite vat a reddish violet.
CH120719D 1925-11-02 1925-11-02 Process for the preparation of isodibenzanthrone. CH120719A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH120719T 1925-11-02
CH119233T 1927-12-05

Publications (1)

Publication Number Publication Date
CH120719A true CH120719A (en) 1927-07-01

Family

ID=25709226

Family Applications (1)

Application Number Title Priority Date Filing Date
CH120719D CH120719A (en) 1925-11-02 1925-11-02 Process for the preparation of isodibenzanthrone.

Country Status (1)

Country Link
CH (1) CH120719A (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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