CH120709A - Process for the preparation of dichloroisodibenzanthrone. - Google Patents

Process for the preparation of dichloroisodibenzanthrone.

Info

Publication number
CH120709A
CH120709A CH120709DA CH120709A CH 120709 A CH120709 A CH 120709A CH 120709D A CH120709D A CH 120709DA CH 120709 A CH120709 A CH 120709A
Authority
CH
Switzerland
Prior art keywords
bzl
dichloroisodibenzanthrone
preparation
benzanthronyl
sulfide
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 CH120709A publication Critical patent/CH120709A/en

Links

Landscapes

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

Description

  

  Verfahren zur Darstellung von     Dichlorisodibenzanthron.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur" Darstellung von     Dichlor-          isodibenzanthron.       Das Verfahren besteht darin,. dass man       Dichlor-Bzl,        Bzl'-benzanthrony1sulfid    fol  gender -Formel:  
EMI0001.0006     
    mit alkalischen Kondensationsmitteln, insbe  sondere alkoholischem. Alkali, behandelt.  



  <I>Beispiel</I>  10 Gewichtsteile     Dichlor-Bzl,        Bzl'-benz-          anthronylsulfid,    erhalten beispielsweise durch       Behandeln    von     Bzl,        Bzl'    -     Benzanthronyl-          sulfid    mit der entsprechenden Menge     Sul-          furylchlorid    im organischen     Lösungsmittel     oder -durch Umsetzung von     Dichlorbenzan-          thron    mit     Alkalipolysulfid,

      werden bei 110  bis 120   in eine aus 60 Gewichtsteilen Ätz  kali und 50 Gewichtsteilen Äthylalkohol  hergestellte Schmelze eingetragen. Man hält    das     Reaktionsgemisch    eine halbe bis eine       Stunde    bei dieser     Temperatur,,        nimmt    mit  Wasser auf,. leitet in die Suspension Luft,  bis kein Farbstoff mehr als     Leukoverbin-          dung        vorhanden    ist,     filtriert    und wäscht mit  Wasser.

   Der erhaltene Farbstoff stellt ein       dunkelviolettes    Pulver dar, das. sich in  Schwefelsäure mit grüner Farbe löst und  aus .blauer     Hydrosulfitküpe        Baumwolle    in  kräftig violettem Tönen von vorzüglichen  Echtheitseigenschaften     anfärbt.     



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



  Process for the preparation of dichloroisodibenzanthrone. The subject of this additional patent is a process for the "preparation of dichloroisodibenzanthrone. The process consists in that dichloro-Bzl, Bzl'-benzanthrony1sulfide following gender formula:
EMI0001.0006
    with alkaline condensation agents, especially alcoholic. Alkali, treated.



  <I> Example </I> 10 parts by weight of dichloro-Bzl, Bzl'-benzanthronyl sulfide, obtained, for example, by treating Bzl, Bzl'-benzanthronyl sulfide with the corresponding amount of sulfuryl chloride in an organic solvent or by reacting dichlorobenzane - throne with alkali polysulphide,

      are entered at 110 to 120 in a melt produced from 60 parts by weight of caustic potash and 50 parts by weight of ethyl alcohol. The reaction mixture is kept at this temperature for half an hour to an hour, taken up with water. passes air into the suspension until there is no more dye present as a leuco compound, filtered and washed with water.

   The dye obtained is a dark violet powder which dissolves in sulfuric acid with a green color and, from a blue hydrosulfite vat, dyes cotton in strong violet tones with excellent fastness properties.



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

Claims (1)

PATENTANS1'R11CII Verfahren zur Darstellung von Dichlor- isodibenzanthron, dadurch gekennzeichnet, dass man Dichlor-Bzl, Bzl'-benzanthronyl:- sulfid, wie es erhalten werden kann durch Behandeln von Bzl, Bzl' - benzanthronyl- sulfid mit Chlor in Chlorsulfonsäure, mit einem alkalischen Kondensationsmittel be handelt. PATENTANS1'R11CII Process for the preparation of dichloroisodibenzanthrone, characterized in that dichloro-Bzl, Bzl'-benzanthronyl: - sulfide, as it can be obtained by treating Bzl, Bzl '- benzanthronyl sulfide with chlorine in chlorosulfonic acid, with an alkaline condensation agent. Das so erhaltene Produkt stellt ein dunkelviolettes Pulver dar, das sich in kon zentrierter Schwefelsäure mit grüner Farbe löst und aus blauer Hydrosulfitküpe Baum wolle kräftig violett färbt. The product obtained in this way is a dark purple powder which dissolves in concentrated sulfuric acid with a green color and turns a strong purple color from a blue hydrosulfite vat.
CH120709D 1924-10-20 1925-10-19 Process for the preparation of dichloroisodibenzanthrone. CH120709A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE120709X 1924-10-20
CH119233T 1927-12-05

Publications (1)

Publication Number Publication Date
CH120709A true CH120709A (en) 1927-06-16

Family

ID=25709234

Family Applications (1)

Application Number Title Priority Date Filing Date
CH120709D CH120709A (en) 1924-10-20 1925-10-19 Process for the preparation of dichloroisodibenzanthrone.

Country Status (1)

Country Link
CH (1) CH120709A (en)

Similar Documents

Publication Publication Date Title
CH120709A (en) Process for the preparation of dichloroisodibenzanthrone.
CH120706A (en) Process for the preparation of isodibenzanthrone.
CH120708A (en) Process for the preparation of monochloroisodibenzanthrone.
CH120720A (en) Process for the preparation of isodibenzanthrone.
CH120710A (en) Process for the preparation of monobromoisodibenzanthrone.
CH120716A (en) Process for the preparation of isodibenzanthrone.
DE442511C (en) Process for the preparation of Kuepen dyes
DE455701C (en) Process for the preparation of Kuepen dyes of the benzanthrone series
CH120719A (en) Process for the preparation of isodibenzanthrone.
CH120717A (en) Process for the preparation of isodibenzanthrone.
DE695083C (en) Process for the production of Kuepen dyes
CH120718A (en) Process for the preparation of isodibenzanthrone.
CH120707A (en) Process for the preparation of isodibenzanthrone.
AT101961B (en) Process for the preparation of chlorine-resistant, sulfurized vat dyes.
CH120712A (en) Process for the preparation of 6-aminoisodibenzanthrone.
CH120714A (en) Process for the preparation of Bz2-methoxyisodibenzanthrone.
CH178117A (en) Process for the production of a new black coloring sulfur dye.
CH119233A (en) Process for the preparation of isodibenzanthrone.
CH120711A (en) Process for the preparation of dibromoisodibenzanthrone.
CH120715A (en) Process for the preparation of Bz2-Bz2&#39;-dimethoxyisodibenzanthrone.
CH157666A (en) Process for the production of a condensation product.
CH133699A (en) Process for the preparation of dichloroisodibenzanthrone.
CH120713A (en) Process for the preparation of 6,6&#39;-diaminoisodibenzanthrone.
CH118722A (en) Process for the preparation of a vat dye.
CH109641A (en) Process for the production of a new vat dye.