CH151168A - Process for the preparation of a wool dye. - Google Patents

Process for the preparation of a wool dye.

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Publication number
CH151168A
CH151168A CH151168DA CH151168A CH 151168 A CH151168 A CH 151168A CH 151168D A CH151168D A CH 151168DA CH 151168 A CH151168 A CH 151168A
Authority
CH
Switzerland
Prior art keywords
preparation
wool
parts
dye
wool 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 CH151168A publication Critical patent/CH151168A/en

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      Verfahren        zur    Darstellung eines     Wollfarbstoffes.       Wie gefunden     wurde,    gelangt man zu  einem neuen wertvollen Farbstoff, der Wolle  in     rötlichbraunen,    gut egalisierenden Tönen  von sehr guter Lichtechtheit färbt, wenn  man 1     1Vlol.        4'-tlthoxy-2.        6-diaminodiphenyl-          amin-4-sulfosäure    mit     11VIol.        2.4.6-Trinitro-          alkoxybenzo1    kondensiert.

       Hierbei    findet zu  nächst die zu erwartende Reaktion zwischen  der     Alkoxygruppe    und einer     Aminogruppe     statt, bei weiterem Erhitzen in Gegenwart       Yon    Alkali tritt dann aber unter Abspaltung  von     Alkalinitrit    eine innere Kondensation  Ein.  



  <I>Beispiel:</I>       32,3    Teile     4'-Äthoxy-2.6-diaminodiphe-          nylamin-4-sulfosäure,    erhalten durch Kon  densation von 2.     6-Dinitrochlorbenzol-4-sulfo-          säure    mit     p-Phenetidin    und folgende Reduk  tion der Nitrogruppen, werden in 500 Teilen  Wasser neutral gelöst und bei 70 bis 80    mit 24 Teilen 2. 4 .

       6-Trinitroanisol,    welches  man allmählich unter Rühren zugibt, kon-         densiert.    Gleichzeitig lässt man eine Lösung  von 6 Teilen Natriumkarbonat in 60 Teilen  Wasser     zutropfen.    Nachdem alles     Trinitro-          anisol    umgesetzt ist, gibt man noch 6 Teile  Natriumkarbonat hinzu und erhitzt eine  Stunde auf 90  . Der Farbstoff wird durch       Aussalzen    abgeschieden und getrocknet. Er  bildet ein schwarzes Pulver.



      Process for the preparation of a wool dye. As has been found, one arrives at a new valuable dye which dyes wool in reddish-brown, well-leveling shades of very good lightfastness, if one 1 vol. 4'-thoxy-2. 6-diaminodiphenylamine-4-sulfonic acid with 11VIol. 2.4.6-trinitroalkoxybenzo1 condensed.

       In this case, the reaction to be expected between the alkoxy group and an amino group takes place first, but on further heating in the presence of alkali, an internal condensation then occurs with elimination of alkali metal nitrite.



  <I> Example: </I> 32.3 parts of 4'-ethoxy-2,6-diaminodiphenylamine-4-sulfonic acid, obtained by condensation of 2,6-dinitrochlorobenzene-4-sulfonic acid with p-phenetidine and the like Reduction of the nitro groups are dissolved in 500 parts of water and neutralized at 70 to 80 with 24 parts 2. 4.

       6-trinitroanisole, which is gradually added with stirring, condenses. At the same time, a solution of 6 parts of sodium carbonate in 60 parts of water is added dropwise. After all the trinitroanisole has reacted, 6 parts of sodium carbonate are added and the mixture is heated to 90 for one hour. The dye is deposited by salting out and dried. It forms a black powder.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Wolle in rötlichbraunen, gut egalisierenden und sehr lichtechten Tönen färbenden Farb stoffes, dadurch gekennzeichnet, dass man auf 1 Mol. 4'-Äthoxy-2. 6-diamino:diphenylamir-- 4-sulfosäure 1 Mol. 2.4.6-Trinitroalkoxy- benzol einwirken lässt und das zunächst ge bildete Kondensationsprodukt in Gegenwart von Alkali erhitzt. PATENT CLAIM: Process for the representation of a wool in reddish-brown, well-leveling and very lightfast tones coloring material, characterized in that 1 mol. 4'-ethoxy-2. 6-diamino: diphenylamir-- 4-sulfonic acid 1 mol. 2.4.6-trinitroalkoxybenzene is allowed to act and the condensation product initially formed is heated in the presence of alkali.
CH151168D 1929-08-17 1930-03-12 Process for the preparation of a wool dye. CH151168A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE151168X 1929-08-17
CH147460T 1931-06-15

Publications (1)

Publication Number Publication Date
CH151168A true CH151168A (en) 1931-11-30

Family

ID=25715036

Family Applications (1)

Application Number Title Priority Date Filing Date
CH151168D CH151168A (en) 1929-08-17 1930-03-12 Process for the preparation of a wool dye.

Country Status (1)

Country Link
CH (1) CH151168A (en)

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