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DE366168C - Process for the preparation of an azo dye which is particularly suitable for the preparation of colored lakes - Google Patents

Process for the preparation of an azo dye which is particularly suitable for the preparation of colored lakes

Info

Publication number
DE366168C
DE366168C DEF47639D DEF0047639D DE366168C DE 366168 C DE366168 C DE 366168C DE F47639 D DEF47639 D DE F47639D DE F0047639 D DEF0047639 D DE F0047639D DE 366168 C DE366168 C DE 366168C
Authority
DE
Germany
Prior art keywords
preparation
azo dye
particularly suitable
colored lakes
lakes
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
DEF47639D
Other languages
German (de)
Inventor
Dr Ernst Meckbach
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.)
Bayer AG
Original Assignee
Farbenfabriken Vorm Friedr Bayer and Co
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 Farbenfabriken Vorm Friedr Bayer and Co filed Critical Farbenfabriken Vorm Friedr Bayer and Co
Priority to DEF47639D priority Critical patent/DE366168C/en
Application granted granted Critical
Publication of DE366168C publication Critical patent/DE366168C/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

Landscapes

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

Description

Verfahren zur Darstellung eines besonders zur Bereitung von 'Farblacken geeigneten Azofarbstoffes: Die bisher bekannten für die Herstellung von Farblacken gelblichroter Tönung in Betracht kommenden f-Naphtholazofarbstoffe lassen hinsichtlich ihrer Deckkraft sehr zu wünschen übrig.Process for the representation of a particularly for the preparation of 'color lacquers suitable azo dye: The previously known for the production of color lakes yellowish-red tint possible f-naphtholazo dyes with regard to their opacity left a lot to be desired.

Es wurde nun gefunden, daß man durch Kuppeln der Diazoverbindung der m-Toluidinsulfosäure mit- ,e-Naphthol zu einem Farbstoff gelangt, der--sich neben feurigem Farbton durch hervorragende Deckkraft und große Lichtechtheit .auszeichnet.It has now been found that by coupling the diazo compound of m-Toluidinsulfosäure with-, e-naphthol arrives at a dye, which - beside fiery shade is characterized by excellent opacity and great lightfastness.

Beis diel.Beis diel.

18,7 Teile m=Toluidinsulfosäure werden in der üblichen Weise diazotiert und die so erhaltene Diazoverbindung zu einer gut gekühlten Lösung von 14,6 Teilen f-Naphthol in der nötigen Menge Nationlauge und einem überschuß von Soda zugefügt. Der Farbsfoff fällt direkt aus. Es wird abfiltriert und getrocknet.18.7 parts of m = toluidine sulfonic acid are diazotized in the usual way and the diazo compound thus obtained to a well-cooled solution of 14.6 parts f-naphthol in the necessary amount of national liquor and an excess of soda added. The dye falls out directly. It is filtered off and dried.

Die Darstellung des Farbstoffes und des Lackes kann auch in einer Operation erfolgen. Besonders wertvoll sind Fällungen auf Schwerspat mit Chlorbarium, die ein sehr feuriges gelbliches Röt von großer Deckkraft und Lichtechtheit liefern.The representation of the dye and the varnish can also be in one Surgery to be done. Precipitations on barite with chlorine barium are particularly valuable, which deliver a very fiery yellowish red with great opacity and lightfastness.

Claims (1)

PATENT=ANSPRUCH Verfahren zur Darstellung eines besonders zur Bereitung von Farblacken geeigneten Azofarbstoffes, darin bestehend, daß man diazotierte m-Toluidinsulfosäure mit fl-Naphthol, mit oder. ohne Substrat, kuppelt. _PATENT = CLAIM Method for the representation of a special preparation of color lakes suitable azo dye, consisting in that one diazotized m-toluidinesulfonic acid with fl-naphthol, with or. without substrate, domes. _
DEF47639D 1920-09-10 1920-09-10 Process for the preparation of an azo dye which is particularly suitable for the preparation of colored lakes Expired DE366168C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF47639D DE366168C (en) 1920-09-10 1920-09-10 Process for the preparation of an azo dye which is particularly suitable for the preparation of colored lakes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF47639D DE366168C (en) 1920-09-10 1920-09-10 Process for the preparation of an azo dye which is particularly suitable for the preparation of colored lakes

Publications (1)

Publication Number Publication Date
DE366168C true DE366168C (en) 1922-12-30

Family

ID=7101751

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF47639D Expired DE366168C (en) 1920-09-10 1920-09-10 Process for the preparation of an azo dye which is particularly suitable for the preparation of colored lakes

Country Status (1)

Country Link
DE (1) DE366168C (en)

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