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CH242998A - 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
CH242998A
CH242998A CH242998DA CH242998A CH 242998 A CH242998 A CH 242998A CH 242998D A CH242998D A CH 242998DA CH 242998 A CH242998 A CH 242998A
Authority
CH
Switzerland
Prior art keywords
copper
compatible
dye
preparation
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 CH242998A publication Critical patent/CH242998A/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
    • C09B35/26—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl urea

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 240993.    Verfahren zur Herstellung eines kupferbaren     Polsazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  "erfahren zur Herstellung eines kupferbaren       _'olyazofarbstoffes.    Das Verfahren ist da  durch     gekennzeichnet,    dass man     tetrazotier-          ten        4,4'-Diamino-2.2',5,5'-tetramethoxy-di-          phenylliarnstoff    mit. 1     111o1    1     Amino-8-oxy-          naphtlialin-?,4-disulfonsäure    und 1     Mol    1,3  Dioxy-benzol kuppelt.  



  Der neue     Disazofarbstoff    stellt ein  dunkles Pulver dar, das sich in     'N\'asser    und  in konzentrierter     Schwefelsäure    mit blauer  Farbe löst. Er färbt     Cellulosefasern    in rot  stickig blauen Tönen. Durch Nachbehandlung  mit Kupfersalzen werden die Nass- und Licht  echtheiten verbessert.  



  <I>Beispiel:</I>  <B>36,2</B> Teile     4,4'-Diamino-        2,2',5,5'-tetra-          methoxy-diphenylharnstoff    werden in salz  saurer     Lösung    mit 13,8 Teilen     Natriumnitrit          tetrazotiert,    die     überschüssige    Mineralsäure         tralen    Lösung von<B>31,9</B> Teilen     1-Amino-8-          oxy-naphthalin-?,4-disulfonsäure    vereinigt.

    Nach Bildung des     Zwischenproduktes    lässt       inan    alsdann eine     wässrige        Lösung    von 11  Teilen     1,3-Dioxy-benzol,    20 Teilen Soda und  150 Teilen     Pyridin    zufliessen und beendet  durch mehrstündiges Rühren bei Raum  temperatur die     Kupplung.    Der Farbstoff wird  mit. Kochsalz gefällt, filtriert und     getrocknet.  



      Additional patent to main patent no. 240993. Process for the production of a copper-compatible polazo dye. The subject matter of the present patent is an "experience for the production of a copperable polyazo dye. The process is characterized in that tetrazotized 4,4'-diamino-2.2 ', 5,5'-tetramethoxy-diphenyl-urea is mixed with. 1 111o1 1 amino-8-oxynaphtlialin- ?, 4-disulfonic acid and 1 mol of 1,3 dioxy-benzene couples.



  The new disazo dye is a dark powder that dissolves blue in water and in concentrated sulfuric acid. It dyes cellulose fibers in red, stuffy blue tones. Post-treatment with copper salts improves the wet and light fastness.



  <I> Example: </I> <B> 36.2 </B> parts 4,4'-diamino-2,2 ', 5,5'-tetra-methoxy-diphenylurea are mixed with 13, 8 parts of sodium nitrite tetrazotized, the excess mineral acid neutral solution of <B> 31.9 </B> parts of 1-amino-8-oxy-naphthalene - ?, 4-disulfonic acid combined.

    After the intermediate product has formed, an aqueous solution of 11 parts of 1,3-dioxybenzene, 20 parts of soda and 150 parts of pyridine can then flow in and the coupling is terminated by stirring for several hours at room temperature. The dye comes with. Salt precipitated, filtered and dried.

Claims (1)

PATEN TA\ SPRUCI3 Verfahren zur Herstellung eines kupfer baren Polyazofarbstofies, dadurch gekenn zeichnet, dass man tetrazotierten 4,4'-Diamino- ?,2'-,#),5'-tetrametlioxy-diplienylliarnstoff mit 1 11o1 1-Ainino-8-oxy-naplitlialin-2,4-disul- fonsäure und 1 Mol 1,3-Dioxy-benzol kuppelt. PATEN TA \ SPRUCI3 Process for the production of a copper baren polyazo dye, characterized in that tetrazotized 4,4'-diamino-?, 2 '-, #), 5'-tetrametlioxy-diplienylliarnstoff with 11o1 1-ainino-8- oxy-naplitlialin-2,4-disulphonic acid and 1 mol of 1,3-dioxy-benzene couples. Der neue Disazofarbstoff stellt ein dunkles Pulver dar, das sich in Wasser und in konzentrierter Schwefelsäure mit blauer Farbe löst. Er färbt Cellulosefasern in rot- The new disazo dye is a dark powder that dissolves in water and in concentrated sulfuric acid with a blue color. It dyes cellulose fibers in red
CH242998D 1944-04-21 1944-04-21 Process for the preparation of a copper-compatible polyazo dye. CH242998A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH240993T 1944-04-21
CH242998T 1944-04-21

Publications (1)

Publication Number Publication Date
CH242998A true CH242998A (en) 1946-06-15

Family

ID=25728563

Family Applications (1)

Application Number Title Priority Date Filing Date
CH242998D CH242998A (en) 1944-04-21 1944-04-21 Process for the preparation of a copper-compatible polyazo dye.

Country Status (1)

Country Link
CH (1) CH242998A (en)

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