CH182960A - Process for the preparation of a chromium complex compound of an azo dye. - Google Patents

Process for the preparation of a chromium complex compound of an azo dye.

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Publication number
CH182960A
CH182960A CH182960DA CH182960A CH 182960 A CH182960 A CH 182960A CH 182960D A CH182960D A CH 182960DA CH 182960 A CH182960 A CH 182960A
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CH
Switzerland
Prior art keywords
azo
complex compound
chromium complex
preparation
azo dye
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Application number
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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.)
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Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH182960A publication Critical patent/CH182960A/en

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Description

  

  Verfahren zur Herstellung einer     Chromkomplegverbindung    eines     AzofarbstofFes.       Den bisher bekanntgewordenen Metall  komplexverbindungen von     Azofarbstoffen     liegen im allgemeinen     Azoverbindungen    zu  grunde.

   die durch Kuppeln von     diazotierten     aromatischen     o-Aminooxy-        bezw.        o-Amino-          carboxyverbindungen    mit solchen Kupp  lungskomponenten hergestellt werden, die in       o-Stellung    zur Kupplungsstelle eine     Hydro-          xyl-    oder     Aminogruppe    enthalten.  



  Es wurde nun gefunden, dass man zu  neuen     Metallkomplexverbindungen    gelangt,  wenn man solche     Azoverbindungen    in Sub  stanz oder auf der Faser mit metallabgeben  den Mitteln behandelt, die in dem Rest der       züi    ihrem Aufbau benutzten     Diazoverbindung     an Stelle der     o-ständigen        Hydroxyl-        bezw.          Carboxylgruppe    eine     Aminogruppe    enthal  ten, deren Wasserstoffatome beliebig durch       Alky    1-,     Aryl-    oder     Acylgruppen    substituiert  sein können.  



  Derartige     Azoverbindungen    lassen sich       aui    verschiedenen Wegen darstellen.     llan       kann zum Beispiel von solchen     Diazoverbin-          dungen    ausgehen, die in     o-Stellung    zur     Di-          azogruppe    eine     Aminogruppe    enthalten, deren  beide Wasserstoffatome beliebig durch Al  kyl-,     Aryl-    oder     Acylgruppen    substituiert  sind, oder auch beispielsweise von solchen       Diazoverbindungen,    die in     o-Stellung    eine  Nitrogruppe oder ein Halogenatom enthalten,

    die nach erfolgter     Farbstoffbildung    nach be  kannten Methoden in die     Aminogruppe    über  geführt werden (vergleiche Schweiz. Patent  schrift Nr.     175ä57).     



  Die so erhältlichen     schwermetallkomplex-          haltigen    wasserlöslichen     Azofarbstoffe    lie  fern im allgemeinen Färbungen von sehr  guten Echtheitseigenschaften, während die       wasserunlöslichen    wertvolle Pigmente sind.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung einer Chrom  komplekverbindung eines     Azofarbstoffes.    Es  ist dadurch gekennzeichnet, dass man den  Farbstoff 1-hlethyl-J-aminobenzol-4-azo-1-           (4'-sulfophenyl)-3-methyl-5-pyrazolon    mit  einem chromabgebenden     Mittel    behandelt.  



  <I>Beispiel:</I>  38,7 Gewichtsteile des Farbstoffes     1-          Methyl    - 3 -     amino-benzol-4-azo-1-(4'-sulfophe-          nyl)-3-methyl-5-pyrazolon    (erhältlich aus       diazotiertem        1-Methyl-3-nitro-4-aminobenzol     und     1-(4'-Sulfophenyl)-3-methyl-5-pyrazolon     und Reduktion der Nitrogruppe) werden in  600 Gewichtsteilen Wasser mit einer     Chrom-          formiatlsung    entsprechend 9,5 Gewichts  teilen     cr201    4 Stunden auf 130   unter Druck  erhitzt.

   Die nach dem Erkalten des Reak  tionsgemisches auskristallisierte Chromver  bindung wird abgesaugt, ausgewaschen, in  das     Natriumsalz    übergeführt     und    -getrocknet.  Der Farbstoff stellt ein gelbbraunes Pulver    dar und färbt Wolle aus saurem Bade gut       egalisierend    in sehr echten braungelben  Tönen.



  Process for the production of a chromium complex of an azo dye. The previously known metal complex compounds of azo dyes are generally based on azo compounds.

   the or by coupling of diazotized aromatic o-aminooxy. o-Amino-carboxy compounds are prepared with coupling components which contain a hydroxyl or amino group in the o-position to the coupling point.



  It has now been found that new metal complex compounds are obtained if such azo compounds in substance or on the fiber are treated with metal donating agents that are in the rest of the diazo compound used in their structure instead of the o-position hydroxyl or. Carboxyl group contains an amino group, the hydrogen atoms of which can be substituted by alkyl, aryl or acyl groups.



  Such azo compounds can be prepared in various ways. Ilan can start, for example, from those diazo compounds which contain an amino group in the o-position to the diazo group, the two hydrogen atoms of which are optionally substituted by alkyl, aryl or acyl groups, or also, for example, from those diazo compounds which are in o -Position contain a nitro group or a halogen atom,

    which, after dye formation has taken place, are converted into the amino group by known methods (cf. Swiss Patent No. 175-57).



  The water-soluble azo dyes containing heavy metal complexes obtainable in this way generally provide colorations with very good fastness properties, while the water-insoluble ones are valuable pigments.



  The present patent relates to a process for the production of a chromium complex compound of an azo dye. It is characterized in that the dye 1-methyl-J-aminobenzene-4-azo-1- (4'-sulfophenyl) -3-methyl-5-pyrazolone is treated with a chromium donating agent.



  <I> Example: </I> 38.7 parts by weight of the dye 1-methyl-3-amino-benzene-4-azo-1- (4'-sulfophenyl) -3-methyl-5-pyrazolone (obtainable from diazotized 1-methyl-3-nitro-4-aminobenzene and 1- (4'-sulfophenyl) -3-methyl-5-pyrazolone and reduction of the nitro group) in 600 parts by weight of water with a chromium formate solution corresponding to 9.5 parts by weight cr201 heated to 130 for 4 hours under pressure.

   The chromium compound which crystallizes out after the reaction mixture has cooled down is filtered off with suction, washed out, converted into the sodium salt and dried. The dye is a yellow-brown powder and dyes wool from an acidic bath in very real brown-yellow tones in a well-leveling manner.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer Chrom komplexverbindung eines Azofarbstoffes, da durch gekennzeichnet, dass man den Farb stoff 1-Methyl-3-aminobenzol-4-azo-1-(4'- sulfophenyl)-3-methyl-5-pyrazolon mit einem chromabgebenden Mittel behandelt. Der erhaltene Farbstoff stellt ein gelb braunes Pulver dar und färbt Wolle aus saurem Bade gut egalisierend in sehr echten braungelben Tönen. Claim: Process for the production of a chromium complex compound of an azo dye, characterized in that the dye 1-methyl-3-aminobenzene-4-azo-1- (4'-sulfophenyl) -3-methyl-5-pyrazolone with a treated chromium-releasing agents. The dyestuff obtained is a yellow-brown powder and dyes wool from an acidic bath in very real brownish-yellow shades in a very equalizing manner.
CH182960D 1934-03-17 1935-03-08 Process for the preparation of a chromium complex compound of an azo dye. CH182960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE182960X 1934-03-17

Publications (1)

Publication Number Publication Date
CH182960A true CH182960A (en) 1936-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH182960D CH182960A (en) 1934-03-17 1935-03-08 Process for the preparation of a chromium complex compound of an azo dye.

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Country Link
CH (1) CH182960A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272835B (en) * 1962-11-23 1968-07-11 Ls Eggli Weibel & Co Sa Machine for the automatic faceting of clock digits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272835B (en) * 1962-11-23 1968-07-11 Ls Eggli Weibel & Co Sa Machine for the automatic faceting of clock digits

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