CH148685A - Process for the preparation of a dye of the anthraquinone series. - Google Patents

Process for the preparation of a dye of the anthraquinone series.

Info

Publication number
CH148685A
CH148685A CH148685DA CH148685A CH 148685 A CH148685 A CH 148685A CH 148685D A CH148685D A CH 148685DA CH 148685 A CH148685 A CH 148685A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
anthraquinone series
series
boric acid
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH148685A publication Critical patent/CH148685A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/50Amino-hydroxy-anthraquinones; Ethers and esters thereof
    • C09B1/503Amino-hydroxy-anthraquinones; Ethers and esters thereof unsubstituted amino-hydroxy anthraquinone

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Farbstoffes    der     Anthrachinonreilie.       Es     -wurde    gefunden, dass man einen Farb  stoff der     Anthrachinonreihe    erhält, wenn  man die     Leukoverbindung    des     1.4.5.8-          Tetraoxyanthraehinons    in     wässerigem    Me  dium in Gegenwart von Borsäure mit Am  moniak erhitzt, wobei zwei     Mol    Ammoniak  mit einem     Mol    des obigen     Anthrachinonderi-          vates    kondensieren,

   und das so erhaltene Kon  densationsprodukt zum     Anthraehinonderivat     oxydiert.  



  Der erhaltene Farbstoff bildet ein dunk  les Pulver und löst sich in organischen Lö  sungsmitteln mit blauer Farbe auf. Er färbt       Acetatseide    nach geeigneter     Verpastung    blau.  <I>Beispiel:</I>  27 Teile     Leuko-l.    4 . ,5 .     -8-T-etraoxyanthra-          chinon    werden als feine Paste in 200 Teilen  einer 24     %        igen    wässerigen     Ammoniaklösung     mit 20 Teilen     krist.    Borsäure sechs Stunden  auf 80 bis 100   erhitzt, wobei     Leuko-1    . 4-         dioxy    - 5.

   8 -     diaminoanthrachinon    entsteht.  Das Produkt wird durch Erhitzen an der  Luft oder in     Borsäure-Schwefelsäure        oxy-          diert.  



  Process for the production of a dye of the anthraquinone range. It was found that a dye of the anthraquinone series is obtained if the leuco compound of 1.4.5.8- Tetraoxyanthraehinons is heated in aqueous medium in the presence of boric acid with ammonia, two moles of ammonia condensing with one mole of the above anthraquinone derivative ,

   and the condensation product thus obtained is oxidized to give the anthraquinone derivative.



  The dye obtained forms a dark powder and dissolves in organic solvents with a blue color. After suitable pasting, it turns acetate silk blue. <I> Example: </I> 27 parts of Leuko-l. 4th , 5. -8-T-etraoxyanthraquinone are crystallized as a fine paste in 200 parts of a 24% strength aqueous ammonia solution with 20 parts. Boric acid heated to 80 to 100 for six hours, with Leuko-1. 4- dioxy - 5.

   8 - diaminoanthraquinone is formed. The product is oxidized by heating in air or in boric acid-sulfuric acid.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farb stoffes der Anthrach#nonreihe, dadurch ge kennzeichnet, dass man die Leukoverbindung des 1. 4. 5 . 8-Tetraoxyanthrachinons in wäs serigem Medium in Gegenwart von Borsäure mit Ammoniak erhitzt und das so erhaltene Kondensationsprodukt zum Anthrachinon- derivat oxydiert. Der erhaltene Farbstoff bildet ein dunk les Pulver und löst sich in organischen Lö sungsmitteln mit blauer Farbe auf. Er färbt Acetatseid.e nach geeigneter Verpastung blau. PATENT CLAIM: Process for the production of a dye of the anthrachnon series, characterized in that the leuco compound of the 1. 4. 5. 8-Tetraoxyanthraquinone is heated with ammonia in an aqueous medium in the presence of boric acid and the condensation product thus obtained is oxidized to the anthraquinone derivative. The dye obtained forms a dark powder and dissolves in organic solvents with a blue color. After suitable pasting, it turns acetate silk blue.
CH148685D 1930-04-17 1930-04-17 Process for the preparation of a dye of the anthraquinone series. CH148685A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH142743T 1930-04-17
CH148685T 1930-04-17

Publications (1)

Publication Number Publication Date
CH148685A true CH148685A (en) 1931-07-31

Family

ID=25714119

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148685D CH148685A (en) 1930-04-17 1930-04-17 Process for the preparation of a dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH148685A (en)

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