CH148496A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

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Publication number
CH148496A
CH148496A CH148496DA CH148496A CH 148496 A CH148496 A CH 148496A CH 148496D A CH148496D A CH 148496DA CH 148496 A CH148496 A CH 148496A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
vat
vat dye
sulfur
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 CH148496A publication Critical patent/CH148496A/en

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Description

  

  Verfahren zur Darstellung eines     Köpenfarbstoffes.       Es wurde gefunden,     dass    man einen wert  vollen neuen     Küpenfarbstoff    erhält, wenn  man     2,-.Xerkapto-l-methylanthraellinon,    das  aus     2-I-Ialogen-l-metliyl-anthrachincn    durch  Behandeln mit     Seliwefelnatrium    erhalten  werden kann, mit Schwefel erhitzt.  



  Der neue Farbstoff löst sich in konzen  trierter Schwefelsäure mit rotvioletter Farbe,  liefert eine     olivefarbene        Küpe    und färbt  Baumwolle in klaren orangegelben Tönen von       ,Mlosser    Echtheit.  



  <I>Beispiel:</I>  <B>1</B> Teil     2-Merkapto-l-methylanthrachinon,     (las aus     -)-Chlor-l-methylanthrachiiion    durch  Behandeln mit Schwefelnatrium erhalten       #verden    kann, wird mit 4 Teilen Schwefel     ge-          miseht    und<B>3</B> bis 4 Stunden lang bei zirka       -)50    bis<B>260' C</B> verschmolzen. Die fertige  Schmelze wird zur Entfernung des über  schüssigen Schwefels mit     Schwefelnatrium-          lösung    ausgekocht. Der zurückbleibende    Farbstoff wird aus Schwefelsäure umgelöst  und durch Behandeln mit     Natriumhypochlo-          ritlösung    gereinigt.

   Chemisch rein wird er  durch Kristallisation aus hochsiedenden or  ganischen Lösungsmitteln, zum Beispiel     Tri-          chlorbenzol    oder     Nitrobenzol,    erhalten.



  Process for the preparation of a woolen dye. It has been found that a valuable new vat dye is obtained if 2-Xerkapto-1-methylanthraellinone, which can be obtained from 2-I-halogen-1-methyl-anthraquinone by treatment with sodium sulfate, is heated with sulfur.



  The new dye dissolves in concentrated sulfuric acid with a red-violet color, provides an olive-colored vat and dyes cotton in clear orange-yellow shades of Mlosser authenticity.



  <I> Example: </I> <B> 1 </B> Part 2-Mercapto-l-methylanthraquinone, (read from -) - Chlor-l-methylanthraquinone can be obtained #verden by treatment with sodium sulphide, is with 4 parts The sulfur is mixed and fused for <B> 3 </B> to 4 hours at about -) 50 to <B> 260 'C </B>. The finished melt is boiled with a sodium sulphide solution to remove the excess sulfur. The remaining dye is redissolved from sulfuric acid and cleaned by treatment with sodium hypochlorite solution.

   It is obtained chemically pure by crystallization from high-boiling organic solvents, for example trichlorobenzene or nitrobenzene.

Claims (1)

PATENTANSPRUCII: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man 2-Merlr-apto-l-methylanthrachinoli, das aus 2-Halogen-l-methylanthraehinoii durch Be handeln mit Schweielnatrium erhalten wer den kann, mit Schwefel erhitzt. Der neue Farbstoff löst sich in konzen trierter Schwefelsäure mit rotvioletter Farbe, liefert eine olivefarbene Küpe und färbt Baumwolle in klaren orangegelben Tönen von grosser Echtheit. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that 2-Merlr-apto-l-methylanthraquinoli, which can be obtained from 2-halo-l-methylanthraehinoii by treating with sodium sulphide, are heated with sulfur. The new dye dissolves in concentrated sulfuric acid with a red-violet color, provides an olive-colored vat and dyes cotton in clear orange-yellow shades of great fastness.
CH148496D 1929-05-14 1930-04-14 Process for the preparation of a vat dye. CH148496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE148496X 1929-05-14

Publications (1)

Publication Number Publication Date
CH148496A true CH148496A (en) 1931-07-31

Family

ID=5672738

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148496D CH148496A (en) 1929-05-14 1930-04-14 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH148496A (en)

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