CH191164A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH191164A
CH191164A CH191164DA CH191164A CH 191164 A CH191164 A CH 191164A CH 191164D A CH191164D A CH 191164DA CH 191164 A CH191164 A CH 191164A
Authority
CH
Switzerland
Prior art keywords
preparation
new
monoazo dye
red
dye
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH191164A publication Critical patent/CH191164A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum     Hauptpatent    Nr. 189140.    Verfahren zur     Darstellung    eines neuen     Konoazofarbstoffes.       Es wurde gefunden, dass man einen neuen,  wertvollen     Monoazofarbstof    erhält, wenn man  die     Diazoverbindung    von     1-Amino-2-(2'-me-          thyl)-phenoxybenzol    von der Formel  
EMI0001.0008     
    mit     2-(2',4'-Dichlorbenzoyl)-amino-5-oxynaph-          thalin-1,7-disulfonsäure    kuppelt.  



  Der neue Farbstoff, ein rotes Pulver, löst  sich in Wasser gelbrot, in konzentrierter  Schwefelsäure violett und färbt Wolle und  Seide in echten, gelbroten Tönen.  



       Beispiel:     39,8 Teile     1-Amino-2-(2'-methyl)-phenoxy-          benzol    werden     diazotiert    und mit 99 Teilen       2-(2',4'-Dichlorbenzoyl)-amino-        5-oxynaphtha-          lin-1,7-disulfonsäure    unter gutem Rühren bei  0   C in verdünnter Lösung in Gegenwart  von     Natriumacetat    gekuppelt. Nach Been  digung der Farbstoff     bildung    wird aasgesalzen  und der ausgeschiedene     Farbstoff        filtriert    und  getrocknet.

      Der erhaltene Farbstoff bildet ein rotes  Pulver, das sich in Wasser mit oranger, in  konzentrierter Schwefelsäure mit violetter  Farbe löst und Wolle und Seide in echten  gelbroten Tönen anfärbt.



  <B> Additional patent </B> to main patent No. 189140. Process for the preparation of a new Konoazo dye. It has been found that a new, valuable monoazo dye is obtained if the diazo compound of 1-amino-2- (2'-methyl) phenoxybenzene is of the formula
EMI0001.0008
    with 2- (2 ', 4'-dichlorobenzoyl) -amino-5-oxynaphthalene-1,7-disulfonic acid.



  The new dye, a red powder, dissolves yellow-red in water and violet in concentrated sulfuric acid and dyes wool and silk in real, yellow-red tones.



       Example: 39.8 parts of 1-amino-2- (2'-methyl) -phenoxy-benzene are diazotized and 99 parts of 2- (2 ', 4'-dichlorobenzoyl) -amino-5-oxynaphthalin-1, 7-disulfonic acid coupled with thorough stirring at 0 C in dilute solution in the presence of sodium acetate. After the formation of the dye has ended, the carrion is salted and the dye which has separated out is filtered and dried.

      The dye obtained forms a red powder which dissolves in water with orange and in concentrated sulfuric acid with violet color and dyes wool and silk in real yellow-red tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Monoazofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-Amino- 2-(2'-methyl)-phenoxybenzol von der Formel EMI0001.0026 mit 2-(2',4'-Dichlorbenzoyl)-amino-oxynaph- thalin-1,7-disulfonsäure kuppelt. Der neue Farbstoff bildet ein rotes Pulver, welches in Wasser mit gelbroter, in konzen trierter Schwefelsäure mit violetter Farbe löslich ist. Er färbt Wolle und Seide in echten, gelbroten Tönen. Claim: Process for the preparation of a new monoazo dye, characterized in that the diazo compound of 1-amino-2- (2'-methyl) -phenoxybenzene of the formula EMI0001.0026 with 2- (2 ', 4'-dichlorobenzoyl) -amino-oxynaphthalene-1,7-disulfonic acid. The new dye forms a red powder, which is soluble in water with a yellow-red color, and in concentrated sulfuric acid with a purple color. He dyes wool and silk in real, yellow-red tones.
CH191164D 1936-03-05 1936-03-05 Process for the preparation of a new monoazo dye. CH191164A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH191164T 1936-03-05
CH189140T 1936-03-05

Publications (1)

Publication Number Publication Date
CH191164A true CH191164A (en) 1937-05-31

Family

ID=25721746

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191164D CH191164A (en) 1936-03-05 1936-03-05 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH191164A (en)

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