CH215058A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH215058A
CH215058A CH215058DA CH215058A CH 215058 A CH215058 A CH 215058A CH 215058D A CH215058D A CH 215058DA CH 215058 A CH215058 A CH 215058A
Authority
CH
Switzerland
Prior art keywords
production
azo dye
new azo
new
amino
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH215058A publication Critical patent/CH215058A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/08—Disazo dyes in which the coupling component is a hydroxy-amino compound
    • C09B33/10—Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol

Description

  

  Zusatzpatent     zum    Hauptpatent Nr. 213427.    Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält,     wenn    man     diazotiertes          1-Amino    - 2,5 -     diäthoxy-4-benzoyl-amiiiobenzol     mit dem 1,2' - (7'     -Methoxy)    -     naphthylazo    - 2     -          amino-3-oxynaphthalin    vereinigt. Der neue       Farbstoff    bildet ein schwarzes, in Wasser  unlösliches Pulver; auf geeigneten     Substraten,     wie z. B.

   Baumwolle, hergestellt, färbt er  diese in echten schwarzen Tönen.  



  <I>Beispiel:</I>  30 Teile     1-Amino-2,5-diäthoxy-4-benzoyl-          aminobenzol    werden wie üblich     diazotiert    und  in eine Lösung von 32,7 Teilen     1,2'-(7-Me-          thoxy)-naphthylazo    -     2-amino-3-oxynaphthalin,     40 Teilen 30 "/o     iger        Natriumhydroxydlösung,     15 Teilen     Natriumacetat    und 1000 Teilen    Wasser eingetragen. Der gebildete     Farbstoff     fällt sofort aus. Der schwarze Niederschlag  wird filtriert und getrocknet.



  Additional patent to main patent No. 213427. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if diazotized 1-amino-2,5-diethoxy-4-benzoyl-amiobenzene with 1,2 '- (7' methoxy) - naphthylazo - 2 - amino-3 -oxynaphthalene combined. The new dye forms a black powder that is insoluble in water; on suitable substrates, such as B.

   Cotton, made, he dyes them in real black tones.



  <I> Example: </I> 30 parts of 1-amino-2,5-diethoxy-4-benzoylaminobenzene are diazotized as usual and converted into a solution of 32.7 parts of 1,2 '- (7-methoxy ) -naphthylazo-2-amino-3-oxynaphthalene, 40 parts of 30% sodium hydroxide solution, 15 parts of sodium acetate and 1000 parts of water. The dyestuff formed precipitates out immediately. The black precipitate is filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man diazotiertes 1-Amino - 2,5 - diäthoxy- 4 - benzoylaminobenzol mit dem 1,2' - (7' - Me - thoxy) - naphthylazo - 2 -amino-3-oxynaphthalin vereinigt. Der neue Farbstoff bildet ein schwarzes Pulver, das in Wasser unlöslich ist. Auf geeigneten Substraten, wie z. B. Baumwolle, hergestellt, färbt er diese in echten schwarzen Tönen. PATENT CLAIM: Process for the production of a new azo dye, characterized in that diazotized 1-amino-2,5-diethoxy-4-benzoylaminobenzene with 1,2 '- (7' - methoxy) - naphthylazo - 2 -amino- 3-oxynaphthalene combined. The new dye forms a black powder that is insoluble in water. On suitable substrates, such as. B. cotton, he dyes them in real black tones.
CH215058D 1939-03-08 1939-03-08 Process for the production of a new azo dye. CH215058A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH215058T 1939-03-08
CH213427T 1939-03-08

Publications (1)

Publication Number Publication Date
CH215058A true CH215058A (en) 1941-05-31

Family

ID=25725415

Family Applications (1)

Application Number Title Priority Date Filing Date
CH215058D CH215058A (en) 1939-03-08 1939-03-08 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH215058A (en)

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