CH157949A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

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Publication number
CH157949A
CH157949A CH157949DA CH157949A CH 157949 A CH157949 A CH 157949A CH 157949D A CH157949D A CH 157949DA CH 157949 A CH157949 A CH 157949A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
sulfuric acid
triaminoanthraquinone
methylated
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 CH157949A publication Critical patent/CH157949A/en

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Description

  

      Verfaln-en    zur Darstellung eines Farbstoffes.    Es wurde gefunden,     dass    man einen wert  vollen, zum Färben von     Zelluloseestern    und       -äthern    geeigneten Farbstoff erhalten kann,  wenn man<B>1.</B> 4.     5-Triaminoanthracl:Linon    so  lange mit einem     metllylierenden    Mittel be  handelt, bis eine Probe des Reaktionsproduk  tes sieh in     2,0%iger    Schwefelsäure mit rot  violetter Farbe löst.  



  Der erhaltene Farbstoff, ein     methyliertes     <B>1 .</B> 4.     5-Triaminoanthrachinon,    färbt     Acetyl-          zellulose    in kräftig blauen Tönen.  



  <I>Beispiel:</I>  Man löst<B>1</B> Teil<B>1 .</B> 4.     5-Triaminoantlira-          chinon    in 4 Teilen 96%iger Schwefelsäure,       lässt        1,5    Teile Methanol     zutropfen,    erhitzt  auf<B>135</B> bis 140'     C,    hält etwa 4 Stunden    lang bei dieser     Tempera-tur,    giesst in Wasser.  macht die Lösung alkalisch und saugt ab.



      Procedure for the representation of a dye. It has been found that a valuable dye suitable for dyeing cellulose esters and ethers can be obtained if one treats <B> 1. </B> 4. 5-Triaminoanthracl: Linon with a metallylating agent until a sample of the reaction product see dissolves in 2.0% sulfuric acid with a red-violet color.



  The dye obtained, a methylated <B> 1. </B> 4. 5-triaminoanthraquinone, colors acetyl cellulose in strong blue tones.



  <I> Example: </I> Dissolve <B> 1 </B> part <B> 1. </B> 4. 5-triaminoantlirquinone in 4 parts of 96% sulfuric acid, leave 1.5 parts of methanol add dropwise, heated to <B> 135 </B> to 140 ° C, keep at this temperature for about 4 hours, pour into water. makes the solution alkaline and sucks off.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstelluno- eines Farb stoffes, dadurch gekennzeichnet, dass man <B>1 .</B> 4. 5-Triaminoanthrachinon so lange mit einem methylierenden Allttel behandelt.. bis eine Probe des Reaktionsproduktes sich in 20%iger Schwefelsäure mit rotvioletter Farbe löst. Der erhaltene Farbstoff, ein methyliertes <B>1.</B> 4. 5-Triaminoantlirachinon, färbt Acetyl- zellulose in kräftig blauen Tönen. PATENT CLAIM: A process for the preparation of a dye, characterized in that <B> 1. </B> 4. 5-triaminoanthraquinone is treated with a methylating universal until a sample of the reaction product is mixed with 20% sulfuric acid red-violet color dissolves. The dye obtained, a methylated <B> 1. </B> 4. 5-triaminoantliraquinone, colors acetyl cellulose in strong blue tones.
CH157949D 1931-01-22 1932-01-12 Process for the preparation of a dye. CH157949A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE157949X 1931-01-22
CH157949T 1932-01-12

Publications (1)

Publication Number Publication Date
CH157949A true CH157949A (en) 1932-10-31

Family

ID=25717023

Family Applications (1)

Application Number Title Priority Date Filing Date
CH157949D CH157949A (en) 1931-01-22 1932-01-12 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH157949A (en)

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