CH141319A - Process for the preparation of an azine dye. - Google Patents

Process for the preparation of an azine dye.

Info

Publication number
CH141319A
CH141319A CH141319DA CH141319A CH 141319 A CH141319 A CH 141319A CH 141319D A CH141319D A CH 141319DA CH 141319 A CH141319 A CH 141319A
Authority
CH
Switzerland
Prior art keywords
preparation
amino
azine dye
sulfonic acid
naphtophenazine
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 CH141319A publication Critical patent/CH141319A/en

Links

Description

       

  Verfahren zur Darstellung eines     Azinfar        bstoffes.       Wie gefunden wurde, gelangt     man    zu  wertvollen neuen Farbstoffen der     Azinreihe,     wenn man     1.2-Naphtophenazinsulfosäuren     in der     8-Stellung    des     Naphtalinkernes    durch       Hydroxyl    oder die     Amino-    oder     Acidyl,amino-          gruppe        substituiert    und gegebenenfalls in  den so gewonnenen     8-Amino-    oder     8-Acidyl-          lmino-1    .

       2-naphtophenazinsulfosäuren    die       Sulfogruppe    abspaltet und, falls nötig, die,  freie     Aminogruppe    durch Säurereste substi  tuiert.  



  Nach .dem vorliegenden Verfahren ge  winnt man einen Farbstoff, der in gelben  Nadeln     kristalisiert,    sich mit gelber Farbe  in Wasser löst und Wolle in     rötlichgelben     Tönen von guter Wasch- und     Walkechtheit     und hervorragender Lichtechtheit färbt, in  dem man     8-Amino-l.2-.naphtophenazin-5-          sulfosäure    mit     Benzoylierungsmitteln    behan  delt.  



       Beispiel:     35 Teile     Natriumsalz    der     8-Amino-1    .     2-          naphtophenazin-5-sulfosäure    werden in 500  Teilen Wasser gelöst;     naeh    Zugabe von 16    'feilen     Benzuyl.chlorid    und 12 Teilen Na  triumkarbonat wird mehrere Stunden bei 60  bis<B>70'</B> gerührt. Es kristallisiert     8-Ben-          zoylamino-1    .     2-naphtophenazin-5-sulfosäure     in gelben Nadeln aus.



  Process for the preparation of an azine dye. As has been found, valuable new dyes of the azine series are obtained if 1,2-naphtophenazine sulfonic acids are substituted in the 8-position of the naphthalene nucleus by hydroxyl or the amino or acidyl amino group and, if appropriate, by the 8-amino or 8-amino groups obtained in this way -Acidyl-lmino-1.

       2-naphtophenazinesulfonic acids split off the sulfo group and, if necessary, the free amino group is substituted by acid residues.



  After .dem present process you win a dye which crystallizes in yellow needles, dissolves in water with a yellow color and dyes wool in reddish-yellow shades of good wash and milled fastness and excellent lightfastness, in which 8-amino-1.2 -.naphtophenazine-5-sulfonic acid treated with benzoylating agents.



       Example: 35 parts of the sodium salt of 8-amino-1. 2- naphtophenazine-5-sulfonic acid are dissolved in 500 parts of water; After adding 16 parts of benzyl chloride and 12 parts of sodium carbonate, the mixture is stirred for several hours at 60 to 70 °. 8-Benzoylamino-1 crystallizes. 2-naphtophenazine-5-sulfonic acid in yellow needles.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines in gel ben Nadeln kristallisierenden und Wolle röt- lichgelb färbenden Azinfarbstoffes, dadurch gekennzeichnet, dass man 8-Amino-1 . 2-naph- tophenazin-5-sulfosäure mit Benzoylierungs- mitteln behandelt. PATENT CLAIM: Process for the preparation of an azine dye which crystallizes in yellow needles and stains wool reddish yellow, characterized in that 8-amino-1. 2-naphthophenazine-5-sulfonic acid treated with benzoylating agents. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Benzoylchlorid auf eine alkalische wässerige Lösung der 8- Amino-1.2-naphtophenazin-5-sulfosäure ein wirken lässt. SUBCLAIM: A method according to claim, characterized in that benzoyl chloride is allowed to act on an alkaline aqueous solution of 8-amino-1,2-naphtophenazine-5-sulfonic acid.
CH141319D 1928-02-07 1929-01-21 Process for the preparation of an azine dye. CH141319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE141319X 1928-02-07

Publications (1)

Publication Number Publication Date
CH141319A true CH141319A (en) 1930-07-31

Family

ID=5668604

Family Applications (1)

Application Number Title Priority Date Filing Date
CH141319D CH141319A (en) 1928-02-07 1929-01-21 Process for the preparation of an azine dye.

Country Status (1)

Country Link
CH (1) CH141319A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165903A (en) * 1962-03-23 1965-01-19 Rateau Soc Gas desiccation apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165903A (en) * 1962-03-23 1965-01-19 Rateau Soc Gas desiccation apparatus

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