CH267284A - 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
CH267284A
CH267284A CH267284DA CH267284A CH 267284 A CH267284 A CH 267284A CH 267284D A CH267284D A CH 267284DA CH 267284 A CH267284 A CH 267284A
Authority
CH
Switzerland
Prior art keywords
copper
oxy
amino
compatible
preparation
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 CH267284A publication Critical patent/CH267284A/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—

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (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-          zotiertes        4,4'-Di-(3"-amino-4"-oxy-benzoyl-          amino)-3,3'-dimethoxy-diphenyi    mit 2     Mol          2-Oxy-naphthalin-7-sulfonsäure    in alkalischem  Medium vereinigt.  



  Der erhaltene neue     Disazofarbstoff    stellt  ein dunkles Pulver dar, das sich in Wasser in  violetter, in konzentrierter Schwefelsäure mit  roter Farbe löst und welcher Baumwolle oder  Zellwolle in bordeauxroten Tönen anfärbt, die  durch     Nachkupferung    in ein reineres Bor  deaux von sehr guter Nass- und Lichtechtheit  übergehen.

           Beispiel:     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     konz.    Salzsäure und 80 Teile Was  ser     aufgetropft.    Nachdem die überschüssige       Mineralsäure    mit Soda abgestumpft wurde,  vereinigt man die erhaltene     grünstichig    gelbe  Suspension der     Tetrazoverbindung    mit einer  kalten alkalischen Lösung von 44,

  8 Teilen       2-Oxy-naphthalin-7-sulfonsäure    und 400 Tei  len Wasser in Gegenwart von 30 Teilen Soda  und 150 Teilen     Pyridin.    Nach mehrstündigem  Rühren bei Raumtemperatur ist die Kupplung  beendet. Der erhaltene     Disazofarbstoff    der  Formel  
EMI0001.0024     
    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) -3,3'-dimethoxy-diphenyi with 2 moles of 2- Oxy-naphthalene-7-sulfonic acid combined in an alkaline medium.



  The new disazo dye obtained is a dark powder that dissolves in water in violet, in concentrated sulfuric acid with a red color and which dyes cotton or rayon in burgundy red tones, which after copper plating change into a purer boron deaux of very good wet and light fastness .

           Example: 51.4 parts of 4,4'-di- (3 "-amino-4" -oxy-benzoyl-amino) -3,3'-dimethoxy-diphenyl are dissolved in 600 parts of water with 8 parts of cold sodium hydroxide solution, with 13.8 parts of sodium nitrite mixed ver and concentrated in the cold with stirring to 40 parts. Hydrochloric acid and 80 parts of water were added dropwise. After the excess mineral acid has been blunted with soda, the resulting greenish yellow suspension of the tetrazo compound is combined with a cold alkaline solution of 44,

  8 parts of 2-oxy-naphthalene-7-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 obtained disazo dye of the formula
EMI0001.0024
    is precipitated with common salt, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupfer baren Poly azofarbstoffes, dadurch gekenn zeichnet, dass man 1 Mol tetrazotiertes 4,4' Di-- (3" - amino - 4"-oxy-benzoyl-amino) - 3,3'-di- rnethoxy-diphenyl mit 2 Mol 2-Oxy-naphtha- lin-7-sulfonsäure in alkalischem Medium ver einigt. PATENT CLAIM: A process for the production of a copper-ble poly azo dye, characterized in that 1 mol of tetrazotized 4,4 'di- (3 "-amino - 4" -oxy-benzoyl-amino) -3,3'-di- Methoxy-diphenyl combined with 2 moles of 2-oxy-naphthaline-7-sulfonic acid in an alkaline medium. Der erhaltene neue Disazofarbstoff stellt ein dunkles Pulver dar, das sich in Wasser mit violetter, in konzentrierter Schwefelsäure mit roter Farbe löst und welcher Baumwolle oder Zellwolle in bordeauxroten Tönen anfärbt, die durch Nachkupferung in ein reineres Bor deaux von sehr guter Nass- und Liehtechtheit übergehen. The new disazo dye obtained is a dark powder that dissolves in water with a violet color, in concentrated sulfuric acid with a red color and which dyes cotton or rayon in burgundy red tones, which are transformed into a purer boron deaux with very good wet and light fastness through subsequent copper plating .
CH267284D 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye. CH267284A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH267284T 1947-09-15
CH261632T 1947-09-15

Publications (1)

Publication Number Publication Date
CH267284A true CH267284A (en) 1950-03-15

Family

ID=25730490

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267284D CH267284A (en) 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye.

Country Status (1)

Country Link
CH (1) CH267284A (en)

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