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CH267285A - 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
CH267285A
CH267285A CH267285DA CH267285A CH 267285 A CH267285 A CH 267285A CH 267285D A CH267285D A CH 267285DA CH 267285 A CH267285 A CH 267285A
Authority
CH
Switzerland
Prior art keywords
copper
preparation
compatible
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 CH267285A publication Critical patent/CH267285A/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     Polyazofarbatoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines kupferbaren       Polyazofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet, dass man 1     Mol        tetra-          zotiert.es        4,4'-Di-(3"-amino-4"-oxy-benzoyl-          amino)-3,3'-dichlor-diphenyl    mit 2     1VIo1        2-Oxy-          naphthalin-4-sulfonsäure    in alkalischem Me  dium vereinigt.  



  Der erhaltene neue     Disazofarbstoff    stellt  ein dunkles Pulver dar, löst sich in Wasser mit  violetter, in konzentrierter Schwefelsäure mit.  roter Farbe und färbt Baumwolle oder Zell  wolle in bordeauxroten Tönen an, welche bei  der     Nachbehandhing    mit Kupfersulfat in ein  reineres Bordeaux mit sehr guten     Echtheits-.          eigenschaften    übergehen.

      <I>Beispiel:</I>  52,5 Teile     4,4'-Di-        (3"-amino-4"-oxy-benzoy        1-          amino)-3,3'-dichlor-diphenyl    werden in 600  Teilen Wasser mit. 8 Teilen Natronlauge kalt       gelöst,    mit 13,8 Teilen     Natriumnitrit    vermischt  und in der Kälte unter Rühren auf 40 Teile  konzentrierter Salzsäure und 80 Teile Wasser       aufgetropft.    Man stumpft     die    überschüssige  Mineralsäure mit Soda ab und vereinigt die       grünstichig    gelbe Suspension der     Tetrazover-          bindung    mit einer kalten alkalischen Lösung  von 44,

  8 Teilen     2-Oxy-naphthalin-4-sulfori-          säure,    400 Teilen Wasser in Gegenwart von 30  Teilen Soda und<B>150</B> Teilen     Pyridin.    Nach  mehrstündigem Rühren bei Raumtemperatur  ist. die Kupplung beendet. Der erhaltene       Disazofarbstoff    der Formel  
EMI0001.0031     
    wird mit Kochsalz gefällt,     abfiltriert    und  getrocknet.



      Additional patent for. Main patent no. 261632. Process for the production of a copper-compatible polyazo-carbate. The present patent relates to a process for the preparation of a copperable polyazo dye. The process is characterized in that 1 mol tetrazotiert.es 4,4'-di- (3 "-amino-4" -oxy-benzoylamino) -3,3'-dichloro-diphenyl with 2 1VIo1 2-oxynaphthalene-4-sulfonic acid combined in an alkaline medium.



  The new disazo dye obtained is a dark powder, dissolves in water with violet, in concentrated sulfuric acid. red color and stains cotton or cellulose wool in burgundy red tones, which after treatment with copper sulfate in a purer Bordeaux with very good fastness. pass over properties.

      <I> Example: </I> 52.5 parts of 4,4'-di (3 "-amino-4" -oxy-benzoy 1-amino) -3,3'-dichloro-diphenyl are in 600 parts of water With. 8 parts of sodium hydroxide solution dissolved in the cold, mixed with 13.8 parts of sodium nitrite and added dropwise to 40 parts of concentrated hydrochloric acid and 80 parts of water while stirring. The excess mineral acid is blunted with soda and the greenish yellow suspension of the tetrazo compound is combined with a cold alkaline solution of 44,

  8 parts of 2-oxy-naphthalene-4-sulforic acid, 400 parts of water in the presence of 30 parts of soda and 150 parts of pyridine. After stirring for several hours at room temperature it is. the clutch ends. The obtained disazo dye of the formula
EMI0001.0031
    is precipitated with common salt, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupfer baren Polyazofarbstoffes, dadurch gekenn zeichnet, dass man 1 Mol tetrazotiertes 4,4'-Di- (3"-amino-4"-oxy- benzoy lamino) - 3,3'- dichlor- diphenyl mit. 2 Mol 2-Oxy-naphthalin-4-sulfon- säure in alkalischem Medium vereinigt. PATENT CLAIM: Process for the preparation of a copper-free polyazo dye, characterized in that 1 mol of tetrazotized 4,4'-di- (3 "-amino-4" -oxybenzoylamino) -3,3'-dichlorodiphenyl is mixed with . 2 moles of 2-oxynaphthalene-4-sulfonic acid combined in an alkaline medium. Der erhaltene neue Disazofarbstoff stellt ein dunkles Pulver dar, löst sich in Wasser mit violetter, in konzentrierter Schwefelsäure mit roter Farbe, und färbt Baumwolle oder Zell wolle in bordeauxroten Tönen an, welche bei der Nachbehandlung mit Kupfersulfat in ein reineres Bordeaux mit sehr guten Echtheits eigenschaften übergehen. The new disazo dye obtained is a dark powder, dissolves in water with a violet color, in concentrated sulfuric acid with a red color, and stains cotton or cellulose in burgundy shades, which after treatment with copper sulfate turns into a purer bordeaux with very good fastness properties pass over.
CH267285D 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye. CH267285A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH261632T 1947-09-15
CH267285T 1947-09-15

Publications (1)

Publication Number Publication Date
CH267285A true CH267285A (en) 1950-03-15

Family

ID=25730491

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267285D CH267285A (en) 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye.

Country Status (1)

Country Link
CH (1) CH267285A (en)

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