CH151162A - Process for the preparation of a wool dye. - Google Patents

Process for the preparation of a wool dye.

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Publication number
CH151162A
CH151162A CH151162DA CH151162A CH 151162 A CH151162 A CH 151162A CH 151162D A CH151162D A CH 151162DA CH 151162 A CH151162 A CH 151162A
Authority
CH
Switzerland
Prior art keywords
preparation
wool
parts
dye
sulfonic acid
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 CH151162A publication Critical patent/CH151162A/en

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Description

  

  Verfahren zur     Darstellung        eines        Wollfarbstoffes.       Wie gefunden wurde, gelangt man zu  einem neuen wertvollen Farbstoff, der Wolle  in braunen, gut egalisierenden Tönen von  sehr guter Lichtechtheit färbt, wenn man  1     Mol.        3'-Methyl-2.6-diaminodiphenylamin-          4-sulfosäure    mit 1     Mol.        2.4.6-Trinitro-l-          alkoxybenzol    kondensiert.

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



  <I>Beispiel:</I>  29;3 Teile     3'-Methyl-2.6-diaminodiphe-          nylamin-4-sulfosäure,    erhalten durch     gon.          densation    von 2. 6 -     Dinitrochlorbenzol    - 4     -          sulfosäure    mit     m-Toluidin    und folgender Re  duktion der     1\Titrogruppen,    werden in 500  Teilen Wasser neutral .gelöst und bei 70 bis  80   mit 24 Teilen 2. 4 .     6-Trinitroanisol,     welches man allmählich unter Rühren zu-    gibt, kondensiert.

   Gleichzeitig lässt man eine  Lösung von 6 Teilen Natriumkarbonat in 60  Teilen Wasser     zutropfen.    Nachdem alles       Trinitroanisol    umgesetzt ist, gibt man noch  6 Teile     Natriumkarbonat    hinzu und erhitzt  eine Stunde auf 90  . Der Farbstoff wird  durch Aus-salzen abgeschieden und getrock  net. 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 brown, well-leveling shades of very good lightfastness, if 1 mole of 3'-methyl-2,6-diaminodiphenylamine-4-sulfonic acid is used with 1 mole. 2.4.6 -Trinitro-l-alkoxybenzene 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> 29; 3 parts of 3'-methyl-2,6-diaminodiphenylamine-4-sulfonic acid, obtained from gon. Densation of 2. 6 - dinitrochlorobenzene - 4 - sulfonic acid with m-toluidine and subsequent reduction of the 1 \ titration groups are dissolved in 500 parts of water until neutral and 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 separated out by salting out and dried. It forms a black powder.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Wolle in braunen, gut egalisierenden und sehr licht echten Tönen färbenden Farbstoffes, dadurch gekennzeichnet, dass man auf 1 Mol. 3'-Me- thyl-2. 6-diaminodiphenylamin-4-sulfosäure 1 Mol. 2.4.6-Trinitro-1-alkoxybenzol ein wirken lässt und das zunächst gebildete Kon- densationsprodukt in Gegenwart von Alkali erhitzt. PATENT CLAIM: Process for the representation of a wool in brown, good leveling and very light-fast tones coloring dye, characterized in that 1 mol. 3'-methyl-2. 6-diaminodiphenylamine-4-sulfonic acid 1 mol. 2.4.6-trinitro-1-alkoxybenzene is allowed to act and the condensation product initially formed is heated in the presence of alkali.
CH151162D 1929-08-17 1930-03-12 Process for the preparation of a wool dye. CH151162A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE151162X 1929-08-17
CH147460T 1931-06-15

Publications (1)

Publication Number Publication Date
CH151162A true CH151162A (en) 1931-11-30

Family

ID=25715030

Family Applications (1)

Application Number Title Priority Date Filing Date
CH151162D CH151162A (en) 1929-08-17 1930-03-12 Process for the preparation of a wool dye.

Country Status (1)

Country Link
CH (1) CH151162A (en)

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