CH292690A - Process for the production of a vat dye. - Google Patents

Process for the production of a vat dye.

Info

Publication number
CH292690A
CH292690A CH292690DA CH292690A CH 292690 A CH292690 A CH 292690A CH 292690D A CH292690D A CH 292690DA CH 292690 A CH292690 A CH 292690A
Authority
CH
Switzerland
Prior art keywords
production
signifies
signs
vat
vat dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH292690A publication Critical patent/CH292690A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16Amino-anthraquinones
    • C09B1/20Preparation from starting materials already containing the anthracene nucleus
    • C09B1/36Dyes with acylated amino groups
    • C09B1/42Dyes with acylated amino groups the acyl groups being residues of an aromatic carboxylic acid
    • C09B1/43Dicarboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 289992.    verfahren     zur        Herstellung    eines     Küpenfarbstoffes.       Es wurde gefunden,     da.ss    man zu einem wertvollen     Küpenfarbstoff    gelangt, wenn man  zwei Verbindungen der Formeln  
EMI0001.0007     
    worin das eine der Zeichen     X1    und X2 eine       NH2-Gruppe    und das andere dieser Zeichen  ein Halogenatom bedeutet, im molekularen  Verhältnis 2:1 miteinander kondensiert.  



  Der neue Farbstoff löst sieh in konzen  trierter Schwefelsäure orangefarben und  färbt Baumwolle     aus    rotvioletter     Küpe    in       kräftigen,    reinen gelben Tönen.  



  Beim vorliegenden Verfahren kann man  entweder ein     1-Halogen-6-fhioranthrachinon,     vorzugsweise     1-Chlor-6-fluoranthrachinon    oder       1-Amino-6-fluoranthrachinon    als den einen  Ausgangsstoff verwenden. Als zweiter Aus  gangsstoff kommt     Isophthalsäurediamid    oder  ein     Isophthalsäuredihalogenid,    insbesondere  das     Dichlorid    in Betracht.  



  Die gemäss vorliegendem Verfahren aus  zuführenden     Kondensationen    erfolgen zweck  mässig in einem hochsiedenden organischen  Lösungsmittel wie     Nitrobenzol    oder     o-Dichlor-          benzol    und bei erhöhter Temperatur. Bei der    Kondensation der     1-Halogen-6-fluoranthrachi-          none    mit dem     Isophthalsäurediamid    empfiehlt  es sich, dem Reaktionsgemisch ein säurebin  dendes Mittel, z. B. Natrium- oder Kalium- ,       carbonat    und ausserdem ein Kupfersalz, wie       Kupfer(I)acetat    oder     Kupfer(I)bromid    zu  zufügen.  



  <I>Beispiel:</I>  24 Teile     1-Amino-6-fluorantllrachinon    und  10 Teile     Isophthalsäuredichlorid    werden in  500 Teilen trockenem Nitrobenzol verteilt.  Nachdem zwei Stunden bei 135 bis 140  ver  rührt wurde, wird     erkaltengelassen.    Der als  goldgelbes Kristallpulver ausfallende Farb  stoff wird abgesaugt, gut mit kochendem  Alkohol gewaschen und getrocknet.



      Additional patent to main patent no. 289992. Process for the production of a vat dye. It has been found that a valuable vat dye can be obtained by using two compounds of the formulas
EMI0001.0007
    wherein one of the signs X1 and X2 signifies an NH2 group and the other of these signs signifies a halogen atom, condensed with one another in a molecular ratio of 2: 1.



  The new dye dissolves orange in concentrated sulfuric acid and dyes cotton from a red-violet vat in strong, pure yellow tones.



  In the present process, either a 1-halo-6-fluoroanthraquinone, preferably 1-chloro-6-fluoroanthraquinone, or 1-amino-6-fluoroanthraquinone can be used as the one starting material. The second starting material is isophthalic acid diamide or an isophthalic acid dihalide, in particular dichloride.



  The condensations fed in according to the present process are expediently carried out in a high-boiling organic solvent such as nitrobenzene or o-dichlorobenzene and at elevated temperature. In the condensation of the 1-halo-6-fluoroanthraquinone with the isophthalic acid diamide, it is advisable to add an acid-binding agent to the reaction mixture, eg. B. sodium or potassium, carbonate and also a copper salt such as copper (I) acetate or copper (I) bromide to be added.



  <I> Example: </I> 24 parts of 1-amino-6-fluorantllrachinone and 10 parts of isophthalic acid dichloride are distributed in 500 parts of dry nitrobenzene. After stirring for two hours at 135 to 140, it is allowed to cool. The color, which precipitates out as a golden yellow crystal powder, is filtered off with suction, washed well with boiling alcohol and dried.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man zwei Verbindungen der Formeln EMI0002.0001 worin das eine der Zeichen X1 und X. eine NH.-Gruppe und das andere dieser Zeichen ein Halogenatom bedeutet, im molekularen Verhältnis 2:1 miteinander kondensiert. Der neue Farbstoff löst sich in konzen trierter Schwefelsäure orangefarben und färbt Baumwolle aus rotvioletter Küpe in kräftigen, reinen gelben Tönen. UNTERANSPRÜCHE: 1. PATENT CLAIM: Process for the production of a vat dye, characterized in that two compounds of the formulas EMI0002.0001 in which one of the signs X1 and X. signifies an NH. group and the other of these signs signifies a halogen atom, condensed with one another in a molecular ratio of 2: 1. The new dye dissolves in concentrated sulfuric acid in an orange color and dyes cotton from a red-violet vat in strong, pure yellow tones. SUBCLAIMS: 1. Verfahren gemäss Patentanspruch, da durch gekennzeichnet, dass man Isophthal- säuredichlorid als Ausgangsstoff verwendet. ?. Verfahren gemäss Patentanspruch, da durch gekennzeichnet., dass die Kondensation in einem hochsiedenden organischen Lösungs mittel durchgeführt wird. Process according to patent claim, characterized in that isophthalic acid dichloride is used as the starting material. ?. Process according to patent claim, characterized in that the condensation is carried out in a high-boiling organic solvent.
CH292690D 1950-07-31 1950-07-31 Process for the production of a vat dye. CH292690A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH292690T 1950-07-31
CH289992T 1951-07-10

Publications (1)

Publication Number Publication Date
CH292690A true CH292690A (en) 1953-08-15

Family

ID=25732920

Family Applications (1)

Application Number Title Priority Date Filing Date
CH292690D CH292690A (en) 1950-07-31 1950-07-31 Process for the production of a vat dye.

Country Status (1)

Country Link
CH (1) CH292690A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870172A (en) * 1955-11-18 1959-01-20 Sandoz Ag Pigment dyestuffs of the anthraquinone series

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870172A (en) * 1955-11-18 1959-01-20 Sandoz Ag Pigment dyestuffs of the anthraquinone series

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