CH267286A - Process for the preparation of a copper-compatible polyazo dye. - Google Patents

Process for the preparation of a copper-compatible polyazo dye.

Info

Publication number
CH267286A
CH267286A CH267286DA CH267286A CH 267286 A CH267286 A CH 267286A CH 267286D A CH267286D A CH 267286DA CH 267286 A CH267286 A CH 267286A
Authority
CH
Switzerland
Prior art keywords
copper
compatible
preparation
parts
polyazo dye
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R 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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH267286A publication Critical patent/CH267286A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/28—Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 261632.    Verfahren zur Herstellung eines kupferbaren     Polyazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines kupferbaren       Polyazofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet., dass man 1     Mol        tetra-          zotierten        4,4'-Di-        (3"-amino-4"-oxy-benzoyl-          amino)

  -diphenylharnstoff    mit 2     Mol        1-Acetyl-          amino-8-oxy-naphthalin-4-sulfonsäitre    in     allia-          lischem    Medium vereinigt.  



  Der erhaltene neue     Disazofarbstoff    stellt  ein dunkles Pulver dar, das sieh in Wasser mit  violetter und in konzentrierter Schwefelsäure  mit roter Farbe löst und Fasern aus natür  licher oder regenerierter     Cellulose        naehge-          kupfert    in rein violetten Tönen anfärbt, welche  vorzügliche     Echtheiten    aufweisen.

      <I>Beispiel:</I>  51,2 Teile     4,4'-Di-        (3"-amino-4"-oxy-benzoyl-          amino)-diphenylharnstoff    werden in 600 Tei  len Wasser mit 8 Teilen Natronlauge kalt ge  löst., mit 13,8 Teilen     Natriumnitrit    vermischt  und in der Kälte unter Rühren auf 40 Teile  konzentrierte Salzsäure und 80 Teile Wasser       aufgetropft.    Nachdem die überschüssige Mine  ralsäure mit Soda abgestumpft wurde, verei  nigt man die erhaltene     grünstichig    gelbe Sus  pension der     Tetrazoverbindung    mit.

   einer kal  ten alkalischen Lösung von 56,2 Teilen     1-Ace-          tylamino-8-oxy-naphthalin-4-sulfonsäure    und  400 Teilen Wasser in Gegenwart von 30 Teilen  Soda und 150 Teilen     Pyridin.    Nach mehrstün  digem Rühren bei Raumtemperatur ist die  Kupplung beendet. Der erhaltene     Disazofarb-          stoff    der Formel  
EMI0001.0031     
    wird mit, Kochsalz gefällt,     abfiltriert    und  getrocknet.



  <B> Additional patent </B> to main patent no. 261632. Process for the production of a copper-compatible polyazo dye. The present patent relates to a process for the preparation of a copperable polyazo dye. The process is characterized in that 1 mole of tetrazotized 4,4'-di- (3 "-amino-4" -oxy-benzoyl-amino)

  -diphenylurea combined with 2 moles of 1-acetylamino-8-oxy-naphthalene-4-sulfonic acid in an allial medium.



  The new disazo dye obtained is a dark powder that dissolves in water with violet and in concentrated sulfuric acid with red color and stains fibers made of natural or regenerated cellulose in pure violet shades, which have excellent fastness properties.

      <I> Example: </I> 51.2 parts of 4,4'-di (3 "-amino-4" -oxy-benzoyl-amino) -diphenylurea are dissolved in 600 parts of cold water with 8 parts of sodium hydroxide ., mixed with 13.8 parts of sodium nitrite and added dropwise in the cold with stirring to 40 parts of concentrated hydrochloric acid and 80 parts of water. After the excess mineral acid has been blunted with soda, the greenish yellow suspension obtained is combined with the tetrazo compound.

   a cold alkaline solution of 56.2 parts of 1-acetylamino-8-oxy-naphthalene-4-sulfonic acid and 400 parts of water in the presence of 30 parts of soda and 150 parts of pyridine. After several hours of stirring at room temperature, the coupling is complete. The resulting disazo dye of the formula
EMI0001.0031
    is precipitated with sodium chloride, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupfer baren Polyazofarbstoffes, dadurch gekenn zeichnet, dass man 1 Mol tetrazotierten 4,4'-Di- (3"-amino-4"-oxy,-benzoylamino) -diphenyl- harnstoff mit 2 Mol 1-Acetylamino-8-oxy- naphthalin-4-sulfonsäure in alkalischem Me dium vereinigt. Claim: Process for the production of a copper-ble polyazo dye, characterized in that 1 mol of tetrazotized 4,4'-di- (3 "-amino-4" -oxy, -benzoylamino) -diphenyl urea is mixed with 2 mol of 1-acetylamino -8-oxynaphthalene-4-sulfonic acid combined in an alkaline medium. Der erhaltene neue Disazofarbstoff stellt ein dunkles Pulver dar, das sich in Wasser mit violetter und in konzentrierter Schwefelsäure mit roter Farbe löst und Fasern aus natür licher oder regenerierter Cellulose na.chge- kupfert in rein violetten Tönen anfärbt, welche vorzügliche Echtheiten aufweisen. The new disazo dye obtained is a dark powder that dissolves in water with violet and in concentrated sulfuric acid with red color and stains fibers made of natural or regenerated cellulose in pure violet shades, which have excellent fastness properties.
CH267286D 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye. CH267286A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH267286T 1947-09-15
CH261632T 1947-09-15

Publications (1)

Publication Number Publication Date
CH267286A true CH267286A (en) 1950-03-15

Family

ID=25730492

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267286D CH267286A (en) 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye.

Country Status (1)

Country Link
CH (1) CH267286A (en)

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