CH108492A - Process for the production of a vat dye. - Google Patents

Process for the production of a vat dye.

Info

Publication number
CH108492A
CH108492A CH108492DA CH108492A CH 108492 A CH108492 A CH 108492A CH 108492D A CH108492D A CH 108492DA CH 108492 A CH108492 A CH 108492A
Authority
CH
Switzerland
Prior art keywords
production
vat dye
dye
aminoanthraquinone
mercapto
Prior art date
Application number
Other languages
German (de)
Inventor
Soda-Fabrik Badische Anilin
Original Assignee
Basf 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 Basf Ag filed Critical Basf Ag
Publication of CH108492A publication Critical patent/CH108492A/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
    • C09B49/00Sulfur dyes
    • C09B49/04Sulfur dyes from amino compounds of the benzene, naphthalene or anthracene series

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Küpenfarbstoües.       Es ist bekannt, dass man einen echten,  zitronengelbe Färbungen liefernden     Küpen-          farbstoff    erhält, wenn man     1-Chlor-2-acet-          aminoanthrachinon    mit Schwefel erhitzt.  



  Es wurde nun gefunden, dass man diesen  Farbstoff technisch wesentlich bequemer und  in besserer Ausbeute darstellen kann, wenn  man auf     1-Merkapto-2-aminoanthrachinon          Glyogal,    zum Beispiel in Form der     Bisulfit-          verbindung,        einwirken    lässt.  



       Beispiel:     10 Teile     1-Merkapto-2-aminoanthrachinon     oder dessen     Disulfid    werden in 100 Teilen  Schwefelsäure von<B>66'</B>     B6    gelöst. Dann wer  den 5,6 Teile     Glyoxal-Natriumbisulfit    ein  getragen. Das Ganze wird darauf eine Vier-         telstunde    auf 90 bis 100   erhitzt. Dabei geht  die anfangs grüngelbe Farbe der Lösung in  gelbrot über. Nach dem Erkalten wird in       Wasser        gerührt,        abfiltriert    und ausgewaschen.

    Der erhaltene     grünstichig    gelbe Farbstoff  ist in dieser Form zum Färben geeignet,  kann aber     gewünschtenfalls    durch Kochen  mit     Natriumhypochloritlösung    noch weiter  gereinigt werden.



  Process for the production of a vat dye. It is known that a true, lemon-yellow color is obtained by heating 1-chloro-2-acetaminoanthraquinone with sulfur.



  It has now been found that this dye can be produced technically much more conveniently and in better yield if 1-mercapto-2-aminoanthraquinone glyogal, for example in the form of the bisulfite compound, is allowed to act.



       Example: 10 parts of 1-mercapto-2-aminoanthraquinone or its disulfide are dissolved in 100 parts of sulfuric acid of <B> 66 '</B> B6. Then who carried the 5.6 parts of glyoxal sodium bisulfite. The whole thing is then heated to 90 to 100 for a quarter of an hour. The initially green-yellow color of the solution changes to yellow-red. After cooling, the mixture is stirred in water, filtered off and washed out.

    The greenish yellow dye obtained is suitable for dyeing in this form, but can, if desired, be further purified by boiling with sodium hypochlorite solution.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines g= stichig gelben Küpenfarbstoffes, dadurch ge kennzeichnet, dass man auf 1-Merkapto-2- aminoanthrachinon Glyoxal einwirken lässt. PATENT CLAIM: Process for the preparation of a g = pungent yellow vat dye, characterized in that 1-mercapto-2-aminoanthraquinone glyoxal is allowed to act.
CH108492D 1924-01-14 1924-01-14 Process for the production of a vat dye. CH108492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH108492T 1924-01-14

Publications (1)

Publication Number Publication Date
CH108492A true CH108492A (en) 1925-02-16

Family

ID=4367460

Family Applications (1)

Application Number Title Priority Date Filing Date
CH108492D CH108492A (en) 1924-01-14 1924-01-14 Process for the production of a vat dye.

Country Status (1)

Country Link
CH (1) CH108492A (en)

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