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DE514432C - Process for the preparation of dyes of the anthracene series - Google Patents

Process for the preparation of dyes of the anthracene series

Info

Publication number
DE514432C
DE514432C DEI33093D DEI0033093D DE514432C DE 514432 C DE514432 C DE 514432C DE I33093 D DEI33093 D DE I33093D DE I0033093 D DEI0033093 D DE I0033093D DE 514432 C DE514432 C DE 514432C
Authority
DE
Germany
Prior art keywords
dyes
preparation
anthracene series
anthracene
violet
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
DEI33093D
Other languages
German (de)
Inventor
Dr Emil Hausdoerfer
Dr Arthur Wolfram
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 DEI33093D priority Critical patent/DE514432C/en
Application granted granted Critical
Publication of DE514432C publication Critical patent/DE514432C/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings

Landscapes

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

Description

Verfahren zur Darstellung von Farbstoffen der Anthracenreihe In dem Patent 512 229 wurde gezeigt, daß sich unter gewissen, besonders milden Bedingungen die 2-(et-Naphthoyl-)Benzoesäuren zu neuen, bisher unbekannten Anthracenderivaten kondensieren lassen.Process for the preparation of dyes of the anthracene series In the U.S. Patent 512,229 has been shown to work under certain particularly mild conditions the 2- (et-naphthoyl) benzoic acids to new, previously unknown anthracene derivatives let condense.

Es wurde nun gefunden, daß diese Kondensationsprodukte bei der Behandlung mit kaustischen Alkalien in wertvolle Küpenfarbstoffe übergehen.It has now been found that these condensation products in the treatment convert into valuable vat dyes with caustic alkalis.

Die Umwandlung der Kondensationsprodukte in Farbstoffe erfolgt in ganz analoger Weise wie die Darstellung des Violanthrons. Beispiel i Gewichtsteil des nach dem Verfahren des Patents 512 229, Beispiel i, dargestellten Kondensationsproduktes aus 2-(a-Naphthoyl-) Benzoesäure wird bei etwa 23o° in 6Gewichtsteile geschmolzenes Ätzalkali eingetragen. Die "Temperatur wird unter beständigem Rühren der Schmelze auf 25o bis 26o" gesteigert. Bei dieser Temperatur wird so lange gerührt, bis eine in Wasser gelöste Probe keine Zunahme der Farbstoffbildung mehr zeigt. Die Schmelze wird alsdann in Wasser gelöst, nach Zugabe von Hydrosulf t erwärmt und heiß filtriert. Aus dem Filtrat scheidet sich durch Lufteinblasen der Farbstoff in feinen violettblauen Flocken ab, die abgesaugt, gewaschen und getrocknet werden. Der Farbstoff stellt ein violettschwarzes Pulver dar: seine Küpe ist von rotvioletter Farbe und zeigt starke rote Fluoreszenz. Die vegetabilische Faser wird violett angefärbt; beim Verhängen erhält man blaue Färbungen. In Schwefelsäure löst sich der Farbstoff- mit violettblauer Farbe.The conversion of the condensation products into dyes takes place in very analogous to the representation of the violin throne. Example i part by weight of the condensation product prepared by the method of patent 512 229, example i from 2- (a-naphthoyl-) benzoic acid is melted at about 23o ° in 6 parts by weight Caustic alkali registered. The "temperature is set with constant stirring of the melt to 25o to 26o ". Stirring is continued at this temperature until a sample dissolved in water no longer shows any increase in dye formation. The melt is then dissolved in water, heated after addition of hydrosulf t and filtered hot. The dye separates from the filtrate in fine violet-blue colors by blowing in air Flakes that are vacuumed off, washed and dried. The dye represents represents a violet-black powder: its vat is red-violet in color and shows strong red fluorescence. The vegetable fiber is colored purple; when imposing blue colorations are obtained. In sulfuric acid the dye dissolves with violet blue Colour.

Claims (1)

PATENTANSPRUCH. Verfahren zur Darstellung von Farbstoffen der Anthracenreihe, darin bestehend, daß man die nach dem Verfahren des Patents 512 229 dargestellten Kondensationsprodukte aus 2-(a-Naphthoyl-)Benzoesäure mit kaustischen Alkalien behandelt.PATENT CLAIM. Process for the preparation of dyes of the anthracene series, consisting in that one represented by the method of the patent 512,229 Treated condensation products of 2- (a-naphthoyl) benzoic acid with caustic alkalis.
DEI33093D 1927-12-31 1927-12-31 Process for the preparation of dyes of the anthracene series Expired DE514432C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI33093D DE514432C (en) 1927-12-31 1927-12-31 Process for the preparation of dyes of the anthracene series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI33093D DE514432C (en) 1927-12-31 1927-12-31 Process for the preparation of dyes of the anthracene series

Publications (1)

Publication Number Publication Date
DE514432C true DE514432C (en) 1930-12-12

Family

ID=7188317

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI33093D Expired DE514432C (en) 1927-12-31 1927-12-31 Process for the preparation of dyes of the anthracene series

Country Status (1)

Country Link
DE (1) DE514432C (en)

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