CH207512A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH207512A
CH207512A CH207512DA CH207512A CH 207512 A CH207512 A CH 207512A CH 207512D A CH207512D A CH 207512DA CH 207512 A CH207512 A CH 207512A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
pyrazolone
phenyl
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 CH207512A publication Critical patent/CH207512A/en

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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
    • C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
    • C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
    • C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
    • C09B29/3647—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms
    • C09B29/3652—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles
    • C09B29/366—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles containing hydroxy-1,2-diazoles, e.g. pyrazolone

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält, wenn man auf     1-Phenyl-          3-methyl-5-pyrazolon    die     Diazoverbindung    des       ss-Oxyäthyläthers    des     1-Arnino-4-oxybenzols     und eine die Gruppe     -SOsH    abgebende Ver  bindung derart aufeinander einwirken lässt,

    dass man den     Schwefelsäureester    des     Azo-          farbstoffes    aus dianotiertem     P-Oxyätbyläther     des     1-Amino-4-oxybenzols    und     1-Phenyl-3-          methyl-5-pyrazolon    erhält.  



  Der neue Farbstoff bildet ein gelbes Pul  ver, das sich in Wasser mit gelber Farbe  löst und     Acetatseide    in reinen gelben Tönen  färbt.  



  <I>Beispiel:</I>  15,3 Teile des     ,Q-Oxyäthyläthers    des     1-          Amino-4-oxybenzols    werden mit der notwen  digen Menge Salzsäure und     Natriumnitrit     dianotiert. Die     Diazolösung    trägt man in  eine wässerige Lösung von 17,4 Teilen 1  Phenyl-3-methyl-5-pyrazolon ein, das in der  berechneten Menge     Natriumhydrogyd    gelöst    worden ist. Zur Vervollständigung der Um  setzung kann man     Natriumacetat    oder Na  triumkarbonat zusetzen. Der ausgefallene  Farbstoff wird     abfiltriert,    ausgewaschen und  getrocknet.  



  10 Teile dieses Farbstoffes werden in  etwa 100 Teile Schwefelsäure bei 30-40'  eingetragen. Man rührt so lange, bis der  Farbstoff sich vollständig aufgelöst hat. Her  nach trägt man die     Farbstofflösung    auf Eis  aus, filtriert den ausgeschiedenen Farbstoff  ab und stellt ihn durch vorsichtiges Behan  deln mit Alkali neutral. Der isolierte Farb  stoff bildet in trockenem Zustande ein gelbes  Pulver, das sich in Wasser mit gelber Farbe  löst und     Acetatseide    in reinen gelben Tönen  färbt.



  Process for the preparation of an azo dye. It has been found that a new azo dye is obtained if the diazo compound of the ß-oxyethyl ether of 1-amino-4-oxybenzene and a compound which donates the -SOsH group to one another in such a way on 1-phenyl-3-methyl-5-pyrazolone lets act

    that the sulfuric acid ester of the azo dye is obtained from dianotized P-oxyethyl ether of 1-amino-4-oxybenzene and 1-phenyl-3-methyl-5-pyrazolone.



  The new dye forms a yellow powder that dissolves in water with a yellow color and dyes acetate silk in pure yellow tones.



  <I> Example: </I> 15.3 parts of, Q-oxyethyl ether of 1-amino-4-oxybenzene are dianotized with the necessary amount of hydrochloric acid and sodium nitrite. The diazo solution is introduced into an aqueous solution of 17.4 parts of 1-phenyl-3-methyl-5-pyrazolone which has been dissolved in the calculated amount of sodium hydrogen. To complete the implementation, sodium acetate or sodium carbonate can be added. The precipitated dye is filtered off, washed out and dried.



  10 parts of this dye are introduced into about 100 parts of sulfuric acid at 30-40 '. The mixture is stirred until the dye has completely dissolved. Her after the dye solution is carried out on ice, the precipitated dye is filtered off and made neutral by careful treatment with alkali. The isolated dye forms a yellow powder when dry, which dissolves in water with a yellow color and dyes acetate silk in pure yellow tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man auf 1-Phenyl-3-methyl-5-pyrazolon die Di- azoverbindung des P-Ogyäthyläthers des 1- Amino-4-oxybenzols und eine die Gruppe -S0sH abgebende Verbindung derart aufein ander einwirken lässt, PATENT CLAIM: A process for the production of an azo dye, characterized in that the di-azo compound of the P-Ogyäthyläthers of 1-amino-4-oxybenzene and a group -S0sH donate to 1-phenyl-3-methyl-5-pyrazolone Allows connection to act on each other in such a way that dass man den Schwefel säureester des Azofarbstoffes aus diazotier- tem R-Oxyäthyläther des 1-Amino-4-oxyben- zols und 1-Phenyl-3-methyl-5-pyrazolon er hält. Der neue Farbstoff bildet ein gelbes Pul ver, das sich in Wasser mit gelber Farbe löst und Acetatseide in reinen gelben Tönen färbt. that the sulfuric acid ester of the azo dye is obtained from diazotized R-oxyethyl ether of 1-amino-4-oxyben- zene and 1-phenyl-3-methyl-5-pyrazolone. The new dye forms a yellow powder that dissolves in water with a yellow color and dyes acetate silk in pure yellow tones.
CH207512D 1938-08-22 1938-08-22 Process for the preparation of an azo dye. CH207512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH207512T 1938-08-22

Publications (1)

Publication Number Publication Date
CH207512A true CH207512A (en) 1939-11-15

Family

ID=4445574

Family Applications (1)

Application Number Title Priority Date Filing Date
CH207512D CH207512A (en) 1938-08-22 1938-08-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH207512A (en)

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