DE477448C - Process for the preparation of azo dyes - Google Patents

Process for the preparation of azo dyes

Info

Publication number
DE477448C
DE477448C DEI28443D DEI0028443D DE477448C DE 477448 C DE477448 C DE 477448C DE I28443 D DEI28443 D DE I28443D DE I0028443 D DEI0028443 D DE I0028443D DE 477448 C DE477448 C DE 477448C
Authority
DE
Germany
Prior art keywords
preparation
azo dyes
acid
dyes
boil
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEI28443D
Other languages
German (de)
Inventor
Dr Josef Haller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
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
Priority to DEI28443D priority Critical patent/DE477448C/en
Application granted granted Critical
Publication of DE477448C publication Critical patent/DE477448C/en
Expired legal-status Critical Current

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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/18—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
    • C09B29/20—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

Verfahren zur Darstellung von Azofarbstoffen Es wurde gefunden, daß man zu violetten Farbstoffen bzw. Farbtönen dadurch gelangen kann, daß man die Diazoverbindungen von Aminonaphtholäthern mit den Arylamiden der 2 - 3-Oxynaphthoesäure in Substanz oder auf der Faser kuppelt. Dieses Resultat: ist biemerkenswert, da bisher violette Produkte in der Reihe dieser Farbkörper unbekannt waren. Beispiel 2,5 Gewichtst-eile salzsaures 7 - Methoxyi-aminonap-hthalin vom Schmelzpunkt 8i'werden in Wasser gelöst und nhch Zusatz von 4 Gewichtsteilen Salzsäure auf übliche Art diazotiert. Zur Erhöhung der Haltbarkeit der Diazoverbindug,g können XLaphthalinsulfoisä#uren beigemengt werden. Nun wird mit Wasser auf i ooo Volumenteile aufgefüllt, die überschüssige Mineralsäure durch essigsaures Natron ab, gestumpft und die mit einer i 215 9 2,3-Oxy,n,ap,hthoesäure-ß-naphthylamid irn Liter enthaltende Lösung vorbehandelte Ware etwa 2o Minuten darin umgezogen. Nach dem Spülea wird kochend geseift. Man erhält so ein klares, rotstichiges Violett von sehr guter Chlor-, Koch- und Lichtedhüheit.A process for the preparation of azo dyes It has been found that one can reach violet dyes or colors characterized in that the diazo compounds of Aminonaphtholäthern with the aryl amides of the 2 - coupling 3-hydroxynaphthoic acid in bulk or on the fiber. This result: is noteworthy, since purple products in the series of these color bodies were previously unknown. Example 2.5 Gewichtst-rush muriate 7 - Methoxyi-aminonap-hthalin dissolved in water and diazotized with a melting point 8i'werden NHCH addition of 4 parts by weight of hydrochloric acid in the usual way. XLaphthalenesulfoic acids can be added to increase the durability of the diazo compound. It is then made up to 100 parts by volume with water, the excess mineral acid is removed with sodium acetate, blunted, and the product pretreated with a solution containing 1 215 9 2,3-oxy, n, ap, thoic acid-ß-naphthylamide per liter for about 20 minutes moved in it. After the rinse, the soapy is done at the boil. A clear, red-tinged violet of very good moisture from chlorine, boil and light is obtained in this way.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Azofarbstoffen, darin bestehend, daß Diazoverbindungen von Axninonaphtli-oläthern mit den Arylamiden der 2 - 3-Oxynaphthoesäure in Substanz oder auf der Faser gekuppelt werden.Claim: Process for the preparation of azo dyes, consisting in that diazo compounds of axninonaphthi-ol ethers are coupled with the arylamides of 2 - 3-oxynaphthoic acid in substance or on the fiber.
DEI28443D 1926-06-29 1926-06-29 Process for the preparation of azo dyes Expired DE477448C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI28443D DE477448C (en) 1926-06-29 1926-06-29 Process for the preparation of azo dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI28443D DE477448C (en) 1926-06-29 1926-06-29 Process for the preparation of azo dyes

Publications (1)

Publication Number Publication Date
DE477448C true DE477448C (en) 1929-06-07

Family

ID=7187028

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI28443D Expired DE477448C (en) 1926-06-29 1926-06-29 Process for the preparation of azo dyes

Country Status (1)

Country Link
DE (1) DE477448C (en)

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