CH201838A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH201838A
CH201838A CH201838DA CH201838A CH 201838 A CH201838 A CH 201838A CH 201838D A CH201838D A CH 201838DA CH 201838 A CH201838 A CH 201838A
Authority
CH
Switzerland
Prior art keywords
preparation
disazo dye
dye
diazotized
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH201838A publication Critical patent/CH201838A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/06—Disazo dyes from a coupling component "C" containing a directive hydroxyl group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 198710.    Verfahren zur Herstellung eines     Disazofarbstoües.       Nach dem im Hauptpatent     beschriebenen     Verfahren erhält man einen     Disazofarbstoff,     der sich in organischen Lösungsmitteln mit  bräunlich gelber Farbe löst, wenn man     p-          Aminoazobenzol        diazotiert    und die     Diazover-          bindung    mit     p-Isohexylphenol    kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen Farbstoff mit ganz ähnlichen Ei  genschaften, wenn man     4'-Amino-3.2'-di-          methyl-azo-benzol        diazotiert    und die     Diazo-          verbindung    mit     p-Isohexylphenol    kuppelt.  



  <I>Beispiel:</I>  Man     diazotiert    in üblicher Weise 22,5  Teile     4'-Amino-3.2'-dimethyl-azo-benzol    nach  Zugabe von 60 Teilen Salzsäure, 12       B6,     mit 6,9 Teilen     Natriumnitrit,    filtriert die       Diazolösung        und    lässt sie bei 0   zu einer wäs  serigen Lösung von 17,8 Teilen p-Isohexyl-    Phenol und 10 Teilen     Natriumhydroxyd,    der  man zweckmässig ein     Emulgiermittel    zusetzt,  einlaufen.

   Nach     Beendigung    der     Kupplung     heizt man     auf        etwa   <B>60'</B> hoch,     nutscht    bei  Zimmertemperatur ab, wäscht aus und trock  net. Der Farbstoff löst sich     in    \organischen  Lösungsmitteln mit einem rötlichen Gelb.



      Additional patent to main patent no. 198710. Process for the production of a disazo dye. The process described in the main patent gives a disazo dye which dissolves in organic solvents with a brownish yellow color when p-aminoazobenzene is diazotized and the diazo compound is coupled with p-isohexylphenol.



  As has now been found further, a dye with very similar properties is obtained if 4'-amino-3.2'-dimethyl-azo-benzene is diazotized and the diazo compound is coupled with p-isohexylphenol.



  <I> Example: </I> 22.5 parts of 4'-amino-3.2'-dimethyl-azo-benzene are diazotized in the usual way after adding 60 parts of hydrochloric acid, 12 B6, with 6.9 parts of sodium nitrite, and the filter is filtered Diazo solution and lets it run at 0 to an aqueous solution of 17.8 parts of p-isohexyl phenol and 10 parts of sodium hydroxide, to which an emulsifier is expediently added.

   After the coupling is complete, the system is heated to about <B> 60 '</B>, sucks off at room temperature, washed out and dried. The dye dissolves in organic solvents with a reddish yellow.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man 4'-Am.ino-3. 2'-dimethyl-azo-benzol diazotiert und die Diazoverbindung mit p-Isohexyl- phenol kuppelt. Der Farbstoff löst sich in organischen Lösungsmitteln mit einem röt lichen Gelb. PATENT CLAIM: Process for the production of a disazo dye, characterized in that 4'-Am.ino-3. 2'-dimethyl-azo-benzene is diazotized and the diazo compound is coupled with p-isohexyl phenol. The dye dissolves in organic solvents with a reddish yellow.
CH201838D 1936-03-31 1937-01-22 Process for the preparation of a disazo dye. CH201838A (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE201847X 1936-03-31
DE201844X 1936-03-31
DE201845X 1936-03-31
DE201849X 1936-03-31
DE201838X 1936-03-31
DE201848X 1936-03-31
DE201846X 1936-03-31
CH198710T 1937-01-22

Publications (1)

Publication Number Publication Date
CH201838A true CH201838A (en) 1938-12-15

Family

ID=27570404

Family Applications (1)

Application Number Title Priority Date Filing Date
CH201838D CH201838A (en) 1936-03-31 1937-01-22 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH201838A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045004A (en) * 1959-04-16 1962-07-17 Acna Disazo dyes
US3090780A (en) * 1959-12-15 1963-05-21 Acna Disazo dyes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045004A (en) * 1959-04-16 1962-07-17 Acna Disazo dyes
US3090780A (en) * 1959-12-15 1963-05-21 Acna Disazo dyes

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