CH200256A - Process for the production of a vat dye of the anthraquinone series. - Google Patents

Process for the production of a vat dye of the anthraquinone series.

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Publication number
CH200256A
CH200256A CH200256DA CH200256A CH 200256 A CH200256 A CH 200256A CH 200256D A CH200256D A CH 200256DA CH 200256 A CH200256 A CH 200256A
Authority
CH
Switzerland
Prior art keywords
production
dye
anthraquinone
vat
vat 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 CH200256A publication Critical patent/CH200256A/en

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Description

  

  Verfahren zur Herstellung eines     Nüpenfarbstoffes    der     Anthrachinonreihe.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur     Herstellung    eines     Küpenfarb-          stoffes    der     Anth-rachinonreihe,    dadurch ge  kennzeichnet, dass man     1-Nitro-anthrachinon-          2-carbonsäurechlorid    mit     1-Amino-4-3'-chlor-          anilido-anthrachinon    kondensiert und in dem  erhaltenen Kondensationsprodukt die     Nitro-          gruppe    in die     Aminogruppe    überführt.  



  Der so erhaltene Farbstoff löst sich in  konzentrierter Schwefelsäure oliv und färbt  Baumwolle aus braunroter     Küpe    in     rotstichi-          gen        Corinthtönen    von sehr guten Echtheits  eigenschaften, insbesondere einer bemerkens  werten Chlorechtheit.    <I>Beispiel:</I>    In eine auf etwa<B>160'</B> C gehaltene Lö  sung von 35 Teilen     1-Amino-4-3'-chlorani-          lido-anthrachinon    in etwa 400 Teilen     Tri-          chlorbenzol    werden 32 Teile     1-Nitro-anthra-          chinon-2-carbonsäurechlorid    eingetragen.

   Das       Kondensationsprodukt    fällt nach kurzer Zeit  kristallisiert aus. Nach etwa einstündigem  Erhitzen bei<B>180'</B> C wird es     abgesaugt,    aus-    gewaschen und getrocknet. Durch     Verküpen     oder durch Reduktion mit     Schwefelnatrium     oder durch Behandlung mit gasförmigem  Ammoniak bei höherer Temperatur in einem  organischen Lösungsmittel wird die     Nitro-          gruppe    in     die        Aminogruppe    übergeführt.



  Process for the production of a nub dye of the anthraquinone series. The present patent relates to a process for the production of a vat dye of the anthroquinone series, characterized in that 1-nitro-anthraquinone-2-carboxylic acid chloride is condensed with 1-amino-4-3'-chloroanilido-anthraquinone and in the condensation product obtained, the nitro group is converted into the amino group.



  The dye thus obtained dissolves in concentrated sulfuric acid olive and dyes cotton from a brownish-red vat in reddish Corinth shades with very good fastness properties, in particular remarkable chlorine fastness. <I> Example: </I> In a solution kept at about <B> 160 '</B> C of 35 parts of 1-amino-4-3'-chloroanilido-anthraquinone in about 400 parts of trichlorobenzene 32 parts of 1-nitro-anthraquinone-2-carboxylic acid chloride are entered.

   The condensation product precipitates in crystallized form after a short time. After about one hour of heating at <B> 180 '</B> C, it is suctioned off, washed out and dried. The nitro group is converted into the amino group by vat or by reduction with sodium sulphide or by treatment with gaseous ammonia at a higher temperature in an organic solvent.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Küpen- farbstoffes der Xnthrachinanreihe, dadurch gekennzeichnet, dass man 1-Nitro-anthrachi- non-2-carbonsäurechlorid mit 1-Amino-4-3'- chloranilido-anthraehinon kondensiert und in dem erhaltenen Kondensationsprodukt die Nitrogruppe in die Aminogruppe überführt. PATENT CLAIM: Process for the production of a vat dye of the Xnthraquinane series, characterized in that 1-nitro-anthraquinone-2-carboxylic acid chloride is condensed with 1-amino-4-3'-chloranilido-anthraehinone and the nitro group in the resulting condensation product is transferred the amino group. Der so erhaltene Farbstoff löst sich in konzentrierter Schwefelsäure oliv und färbt Baumwolle aus braunroter Küpe in rotstichi- gen Corinthtönen von sehr guten Echtheits eigenschaften, insbesondere einer bemerkens- ,erten Chlorechtheit. The dye thus obtained dissolves in concentrated sulfuric acid and dyes cotton from a brownish-red vat in reddish Corinth shades of very good fastness properties, in particular a remarkable resistance to chlorine.
CH200256D 1935-10-22 1936-10-06 Process for the production of a vat dye of the anthraquinone series. CH200256A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200256X 1935-10-22
CH195329T 1936-10-06

Publications (1)

Publication Number Publication Date
CH200256A true CH200256A (en) 1938-09-30

Family

ID=25722745

Family Applications (1)

Application Number Title Priority Date Filing Date
CH200256D CH200256A (en) 1935-10-22 1936-10-06 Process for the production of a vat dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH200256A (en)

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