CH118722A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

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Publication number
CH118722A
CH118722A CH118722DA CH118722A CH 118722 A CH118722 A CH 118722A CH 118722D A CH118722D A CH 118722DA CH 118722 A CH118722 A CH 118722A
Authority
CH
Switzerland
Prior art keywords
preparation
blue
vat dye
vat
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 CH118722A publication Critical patent/CH118722A/en

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

Description

  

  Verfahren zur Darstellung eines     Nüpenfarbstoffes.       Es wurde gefunden, dass man einen wert  vollen     Küpeirfarbstoff    erhält, der sich in  konzentrierter Schwefelsäure mit weinroter  Farbe löst und auf Baumwolle aus rein  blauer     Küpe    eine blaue     Färbung    liefert, die  bei der Oxydation an der Luft in ein leuch  tendes     grünstichiges    Blau übergeht, wenn man       Bzl-Halogen-Bz2-methoxybenzanthron    mit  alkalischen Kondensationsmitteln behandelt.  Der Farbstoff zeichnet sich durch hervor  ragende Schönheit der Nuance und durch  gute Echtheitseigenschaften aus.

           Beispiel     7 Teile     Bz1-Chlor-Bz2-methoxyberrzanthron     (erhältlich zum Beispiel durch Behandeln des  entsprechenden     Bz2-Oxybenzatrthronmethyl-          äthers    mit     Sulfurylchlorid    in     Nitrobenzollösung     oder durch     Methylieren    des durch Chlorieren  von     Bz2    -     Oxyberrzanthron    erhältlichen     Bzl-          Chlor-Bz2-okybetrzartthrorrs)    werden bei<B>135</B>  bis 140<B>0</B> in eine Schmelze aus 28 Teilen         Kaliumhydroxyd    und 28 Teilen Alkohol ein  getragen.

   Das Gemisch rührt man etwa eine  Stunde bei 145 bis<B>150</B>  , verdünnt sodann  die Schmelze mit Wasser, kocht auf und  bläst den entstandenen Farbstoff mit. Luft  aus. Sodann wird filtriert, neutral gewaschen  und     angepastet.  



  Process for the preparation of a pebble dye. It has been found that a valuable vat dye is obtained which dissolves in concentrated sulfuric acid with a wine-red color and provides a blue dye on cotton from a pure blue vat, which turns into a bright greenish blue when oxidized in the air Bzl-Halogen-Bz2-methoxybenzanthrone treated with alkaline condensation agents. The dyestuff is distinguished by the outstanding beauty of the shade and good fastness properties.

           Example 7 parts of Bz1-chloro-Bz2-methoxyberrzanthrone (obtainable, for example, by treating the corresponding Bz2-oxybenzatrthrone methyl ether with sulfuryl chloride in nitrobenzene solution or by methylating the Bzl-chloro-Bz2-ors > 135 </B> to 140 <B> 0 </B> in a melt of 28 parts of potassium hydroxide and 28 parts of alcohol.

   The mixture is stirred for about an hour at 145 to 150, then the melt is diluted with water, boiled and the resulting dye is blown with it. Air out. It is then filtered, washed neutral and made into a paste.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, der sich in konzentrierter Schwefel säure mit weinroter Farbe löst und auf Baum wolle aus rein blauer Küpe eine blaue Färbung liefert, die bei der Oxydation an der Luft in ein leuchtendes grünstichiges Blau über geht, dadurch gekennzeichnet, dass man Bzl- Halogen-Bz2-methoxybenzanthron mit alkali schen Kondensationsmitteln behandelt. PATENT CLAIM: Process for the representation of a vat dye which dissolves in concentrated sulfuric acid with a wine-red color and provides a blue color on cotton from a pure blue vat, which changes into a bright greenish blue when it is oxidized in the air that one treats Bzl-halogen-Bz2-methoxybenzanthrone with alkaline condensing agents.
CH118722D 1924-12-13 1925-11-23 Process for the preparation of a vat dye. CH118722A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE118722X 1924-12-13

Publications (1)

Publication Number Publication Date
CH118722A true CH118722A (en) 1927-01-17

Family

ID=5655708

Family Applications (1)

Application Number Title Priority Date Filing Date
CH118722D CH118722A (en) 1924-12-13 1925-11-23 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH118722A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565415A (en) * 1983-08-25 1986-01-21 Advance Transformer Co. Socket for fluorescent lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565415A (en) * 1983-08-25 1986-01-21 Advance Transformer Co. Socket for fluorescent lamps

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