CH151164A - Process for the preparation of a wool dye. - Google Patents

Process for the preparation of a wool dye.

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Publication number
CH151164A
CH151164A CH151164DA CH151164A CH 151164 A CH151164 A CH 151164A CH 151164D A CH151164D A CH 151164DA CH 151164 A CH151164 A CH 151164A
Authority
CH
Switzerland
Prior art keywords
preparation
wool
parts
mol
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 CH151164A publication Critical patent/CH151164A/en

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Description

  

  Verfahren zur Darstellung eines     Wollfarbstoffes.   <B>-</B>    Wie gefunden wurde, gelangt man zu  einem neuen -wertvollen Farbstoff, der Wolle  in braunen, gut egalisierenden Tönen von  sehr guter     Lielitechtheit    färbt, -wenn man  <B>1</B>     Mol.        4'-Methyl-2.        6-dia.minodiphenyla-min-          4-sulfosäure    mit<B>1</B>     Mol.    2. 4.     6-Triiiitro-l-          alkoxybenzol    kondensiert.

   Hierbei findet zu  nächst die zu erwartende Reaktion zwischen  der     Alkox        gruppe    und einer     Aminogruppe          y        tn     statt, bei weiterem Erhitzen in Gegenwart  von Alkali tritt dann aber unter Abspaltung  von     Alkalinitrit    eine innere Kondensation  ein,  <I>Beispiel:

  </I>  <B>29,3</B> Teile     4-Methyl-2.        6-diaminodiphe-          nylamin-4-suliosäure,    erhalten durch     Kon-          densation    von 2.<B>6 -</B>     Dinitrochlorbenzol   <B>-</B> 4     -          sulfosäure    mit     p-Toluidin    und folgender Re  duktion der Nitrogruppen, werden in<B>500</B>  Teilen Wasser neutral gelöst und bei<B>70</B> bis  <B>80 '</B> mit 24 Teilen 2. 4.     6-Trinitroanisol,     welches man allmählich unter Rühren zu-    gibt, kondensiert.

   Gleichzeitig     lässt    man eine       Lösun"    von<B>6</B> Teilen Natriumkarbonat in<B>60</B>  Teilen Wasser     zutropfen.    Nachdem alles       Trinitroanisol    umgesetzt ist, gibt man noch  <B>6</B> Teile Natriumkarbonat hinzu und erhitzt  eine Stunde auf<B>90'.</B> Der Farbstoff wird  durch,     Aussalzen    abgeschieden und getrock  net. Er bildet ein schwarzes Pulver.



  Process for the preparation of a wool dye. <B> - </B> As has been found, a new, valuable dye is obtained, which dyes wool in brown, well-leveling shades of very good Lielite fastness, -if one <B> 1 </B> Mol. 4 ' -Methyl-2. 6-dia.minodiphenyla-min-4-sulfonic acid with <B> 1 </B> Mol. 2. 4. 6-Triiiitro-1-alkoxybenzene condensed.

   In this case, the reaction to be expected between the alkoxy group and an amino group y tn takes place first, but with further heating in the presence of alkali, an internal condensation then occurs with elimination of alkali metal nitrite, <I> Example:

  </I> <B> 29.3 </B> parts 4-methyl-2. 6-diaminodiphenylamine-4-sulio acid, obtained by condensation of 2. 6 - </B> dinitrochlorobenzene <B> - </B> 4 - sulphonic acid with p-toluidine and subsequent reduction of the nitro groups, are dissolved neutrally in <B> 500 </B> parts of water and at <B> 70 </B> to <B> 80 '</B> with 24 parts 2. 4. 6-trinitroanisole, which is gradually added with stirring admits, condenses.

   At the same time, a solution of <B> 6 </B> parts of sodium carbonate in <B> 60 </B> parts of water is added dropwise. After all of the trinitroanisole has reacted, <B> 6 </B> parts of sodium carbonate are added and heated to <B> 90 'for one hour. </B> The dye is deposited by salting out and dried, forming a black powder.

Claims (1)

<B>-</B> PATENTANSPRUCH-. Verfahren zur Darstellung eines Wolle in braunen, gut egalisierenden und sehr lichtechten Tönen färbenden Farbstoffes, da durch gekennzeichnet, dass man auf<B>1</B> Mol. 4'-Methyl-29 <B>.</B> 6-diaminodiphenylamin-4-sulio- säure <B>1</B> Mol. 2. 4.,6-Trinitroalkoxybenzol einwirken lässt und das zunächst gebildete Kondensationsprodukt in Gegenwart von Alkali erhitzt. <B> - </B> PATENT CLAIM-. Process for the production of a wool in brown, well-leveling and very lightfast coloring shades, characterized by the fact that <B> 1 </B> mol. 4'-methyl-29 <B>. </B> 6- diaminodiphenylamine-4-sulioic acid <B> 1 </B> Mol. 2. 4., 6-trinitroalkoxybenzene is allowed to act and the condensation product initially formed is heated in the presence of alkali.
CH151164D 1929-08-17 1930-03-12 Process for the preparation of a wool dye. CH151164A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE151164X 1929-08-17
CH147460T 1931-06-15

Publications (1)

Publication Number Publication Date
CH151164A true CH151164A (en) 1931-11-30

Family

ID=25715032

Family Applications (1)

Application Number Title Priority Date Filing Date
CH151164D CH151164A (en) 1929-08-17 1930-03-12 Process for the preparation of a wool dye.

Country Status (1)

Country Link
CH (1) CH151164A (en)

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