CH267281A - 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
CH267281A
CH267281A CH267281DA CH267281A CH 267281 A CH267281 A CH 267281A CH 267281D A CH267281D A CH 267281DA CH 267281 A CH267281 A CH 267281A
Authority
CH
Switzerland
Prior art keywords
copper
oxy
preparation
parts
compatible
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 CH267281A publication Critical patent/CH267281A/en

Links

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—

Landscapes

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

Description

       

      Zusatzpatent    zum Hauptpatent. Nr. 261632.    Verfahren zur Herstellung eines kupferbaren     Polyazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines kupferbaren       Polyazofarbstoffes.    Das Verfahren ist dadurch  gekennzeichnet, dass man 1     Mol        tetrazotiertes     4,4'     -@        Di-        (3"-amino-        4"-oxy-benzoylamino)    - 3,

       3'-          dimet.hoxy-diphenyl    mit 2     Mol        2-Oxy-naph-          thalin-6-sulfonsäure    in alkalischem Medium  vereinigt.    Der erhaltene neue     Disazofarbstoff    stellt  ein dunkles Pulver dar, das sich in Wasser  mit violetter, in konzentrierter     Schwefelsäure     mit roter Farbe löst, und färbt. Baumwolle  oder Zellwolle in bordeauxroten Tönen an,  die durch     Nachkupferung    in ein reineres Bor  deaux von sehr guter Nass- und Lichtecht  heit übergehen.

      <I>Beispiel:</I>  51,4 Teile     4,4'-Di-(3"-amino-4"-oxy-benzoyl-          amino)-3,3'-dimethoxy-diphenyl    werden in 600  Teilen Wasser mit 8 Teilen Natronlauge kalt  gelöst, mit 13,8 Teilen     Natriumnitrit    ver  mischt und in der Kälte unter Rühren auf  40 Teile konzentrierte Salzsäure und 80 Tei  len Wasser     aufgetropft.    Nachdem die über  schüssige Mineralsäure mit Soda     abgestumpft     wurde, vereinigt man die erhaltene     grünsti-          chig    gelbe Suspension der     Tetrazoverbindung     mit einer kalten alkalischen Lösung von 44,

  8  Teilen     2-Oxy-naphthalin-6-sulfonsäure    und  400 Teilen Wasser in Gegenwart von 30     Teilen     Soda und 150 Teilen     Pyridin.    Nach mehrstün  digem Rühren bei Raumtemperatur     isst,    die  Kupplung beendet. Der erhaltene     Disazofarb-          stoff    der Formel  
EMI0001.0032     
    wird mit Kochsalz gefällt,     abfiltriert    und ge  trocknet.



      Additional patent to the main patent. No. 261632. Process for the preparation of a copperable 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-benzoylamino) -3,

       3'-dimet.hoxy-diphenyl combined with 2 moles of 2-oxy-naphthalene-6-sulfonic acid in an alkaline medium. The new disazo dye obtained is a dark powder which dissolves in water with a violet color and in concentrated sulfuric acid with a red color, and stains. Cotton or viscose wool in burgundy red tones, which are converted into a purer boron deaux with very good wet and lightfastness through re-coppering.

      <I> Example: </I> 51.4 parts of 4,4'-di- (3 "-amino-4" -oxy-benzoyl-amino) -3,3'-dimethoxy-diphenyl are in 600 parts of water with 8 parts of cold sodium hydroxide solution dissolved, ver 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 of the tetrazo compound obtained is combined with a cold alkaline solution of 44,

  8 parts of 2-oxy-naphthalene-6-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 ends. The resulting disazo dye of the formula
EMI0001.0032
    is precipitated with table salt, filtered off and dried ge.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupfer baren Polyazofarbstoffes, dadurch gekennzeich net, dass man 1 Mol tetrazotiertes 4,4'-Di-(3"- amino - 4"- oxy - benzoylamino) -3, 3'-dimethoxy- diphenyl mit 2 Mol 2-Oxy-naphthalin-6-sul- fonsäure in alkalischem Medium vereinigt. PATENT 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) -3, 3'-dimethoxydiphenyl with 2 Mol of 2-oxy-naphthalene-6-sulphonic acid combined in an alkaline medium. Der erhaltene neue Disazofarbstoff stellt ein dunkles Pulver dar, das sich in Wasser mit violetter, in konz. Schwefelsäure mit roter Farbe löst, und färbt Baumwolle oder Zell wolle in bordeauxroten Tönen an, die durch Nachkupferung in ein reineres Bordeaux von sehr guter Nass- und Lichtechtheit übergehen. The new disazo dye obtained is a dark powder that turns violet in water, in conc. Sulfuric acid with a red color dissolves and stains cotton or cellulose wool in burgundy shades, which after copper plating turn into a purer bordeaux with very good wet and light fastness.
CH267281D 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye. CH267281A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH267281T 1947-09-15
CH261632T 1947-09-15

Publications (1)

Publication Number Publication Date
CH267281A true CH267281A (en) 1950-03-15

Family

ID=25730487

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267281D CH267281A (en) 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye.

Country Status (1)

Country Link
CH (1) CH267281A (en)

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