VERFAHREN ZUR HERSTELLUNG VON 1-HYDROXY-4-AMINO-5(8)-NITRO-ANTHRACHINON

1-Hydroxy-4-amino-5- or -8-nitroanthraquinone is obtained in high yields and in high purity when 1,8-dinitroanthraquinone or 1,5-dinitroanthraquinone respectively is reacted below 80 DEG C. in oleum in the presence of boric acid with reducing agents. The products of the process are valuable polyeste...

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Bibliographische Detailangaben
Hauptverfasser:	GEHRKE,GUENTER,DR, HEDERICH,VOLKER,DR
Format:	Patent
Sprache:	ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADHESIVES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY DYES LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC CHEMISTRY ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	1-Hydroxy-4-amino-5- or -8-nitroanthraquinone is obtained in high yields and in high purity when 1,8-dinitroanthraquinone or 1,5-dinitroanthraquinone respectively is reacted below 80 DEG C. in oleum in the presence of boric acid with reducing agents. The products of the process are valuable polyester dyestuffs as well as dyestuff intermediate products.