DE414962C - Process for the production of dyes - Google Patents

Process for the production of dyes

Info

Publication number
DE414962C
DE414962C DEL53695D DEL0053695D DE414962C DE 414962 C DE414962 C DE 414962C DE L53695 D DEL53695 D DE L53695D DE L0053695 D DEL0053695 D DE L0053695D DE 414962 C DE414962 C DE 414962C
Authority
DE
Germany
Prior art keywords
dyes
production
nitro compound
wool
black
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
DEL53695D
Other languages
German (de)
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.)
KURT LEHMSTEDT DR ING
Original Assignee
KURT LEHMSTEDT DR ING
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 KURT LEHMSTEDT DR ING filed Critical KURT LEHMSTEDT DR ING
Priority to DEL53695D priority Critical patent/DE414962C/en
Application granted granted Critical
Publication of DE414962C publication Critical patent/DE414962C/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
    • C09B59/00—Artificial dyes of unknown constitution

Landscapes

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

Description

Verfahren zur Herstellung von Farbstoffen. Die durch Nitrieren des Glykosins (Diimidazolyl), CBH,;N" erhältliche Nitroverbindung, C6H501pN7, ist intensiv gelb gefärbt, besitzt aber keinen Farbstoffcharakter. Wird sie mit Reduktionsmitteln behandelt, so geht sie in Farbstoffe über. So liefert sie mit Schwefelammonium das Ammonsa'z C6H807Ns # zNH3, welches Wolle und Seide gelbbraun anfärbt. Mit Natriumhydrosulfit, Eiserichlorür, Zinnchlorür dagegen bilden sich schwarze, noch nicht näher untersuchte Substanzen, die auf Wolle und auf Baumwo'.le graublau bis schwarz aufziehen. Die Reduktion der Nitroverbindung selbst kann auch auf der Faser vorgenommen werden. Man kann auch zwei Reduktionsmittel hintereinander anwenden, z. B. zuerst Ammoniumsulfid, dann Hydrosulfit.Process for the production of dyes. The nitriding of the Glycosine (diimidazolyl), CBH,; N "available nitro compound, C6H501pN7, is intense colored yellow, but has no coloring character. Will she use reducing agents treated, it turns into dyes. So with sulfur ammonium she delivers that Ammonsa'z C6H807Ns # zNH3, which dyes wool and silk yellow-brown. With sodium hydrosulfite, Iron chloride and tin chloride, on the other hand, form black ones that have not yet been investigated in more detail Substances that are gray-blue to black on wool and cotton wool. the Reduction of the nitro compound itself can also be done on the fiber. You can also use two reducing agents one after the other, e.g. B. first ammonium sulfide, then hydrosulfite.

Beispiel i.Example i.

33,5 g der Nitroverbindung des Glykosins werden in wenig verdünntem Ammoniak gelöst und mit einem überschuß frischer konzentrierter Schwefelammoniumlösung versetzt. Sogleich fallen tiefrote Nadeln des Farbstoffs C6H807N8 # zNH3 aus, dessen Menge 85 bis 9o Prozent der theoretischen Ausbeute beträgt.33.5 g of the nitro compound of glycosine are diluted in a little Dissolved ammonia and with an excess of fresh concentrated ammonium sulphide solution offset. Deep red needles of the dye C6H807N8 # zNH3 fall out immediately Amount is 85 to 9o percent of the theoretical yield.

Beispiel Eine warme Lösung der Nitroverbindung wird mit Natriumhydrosulfit bis zum Aufhören der schwarzen Fällung versetzt. Der in Ammoniak gelöste Niederschlag gibt auf Wolle graue bis schwarze Färbungen.Example A warm solution of the nitro compound is made with sodium hydrosulfite until the black precipitation ceases. The precipitate dissolved in ammonia gives gray to black colorations on wool.

Eisenchlorür und Zinnchlorür geben einen ähnlichen Farbstoff.Iron chloride and tin chloride give a similar dye.

Claims (1)

PATENT-ANSPRUCH: Verfahren zur Herstellung von Farbstoffen, dadurch gekennzeichnet, daß man die durch Nitrieren von Glykosin (Diimidazolyl) erhältliche Nitroverbindung mit reduzierenden Mitteln behandelt.PATENT CLAIM: Process for the production of dyes, thereby characterized in that one obtainable by nitrating glycosine (diimidazolyl) Nitro compound treated with reducing agents.
DEL53695D 1921-08-03 1921-08-03 Process for the production of dyes Expired DE414962C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL53695D DE414962C (en) 1921-08-03 1921-08-03 Process for the production of dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL53695D DE414962C (en) 1921-08-03 1921-08-03 Process for the production of dyes

Publications (1)

Publication Number Publication Date
DE414962C true DE414962C (en) 1925-06-11

Family

ID=7275589

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL53695D Expired DE414962C (en) 1921-08-03 1921-08-03 Process for the production of dyes

Country Status (1)

Country Link
DE (1) DE414962C (en)

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