Process for purifying 1-aminoanthraquinone

Details Process for purifying 1-aminoanthraquinone Process for purifying 1-aminoanthraquinone

1975-12-22

1976-10-05

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 9724

Patent

active

039844250

ABSTRACT:
A process for purifying 1-aminoanthraquinone, which comprises hydrogenating crude 1-aminoanthraquinone containing diaminoanthraquinones in an aqueous medium in the presence of a base using a hydrogenating catalyst to form a mixture comprising 1-aminoanthrahydroquinone and the corresponding diaminoanthrahydroquinones, partially oxidizing the mixture, removing water-insoluble materials from the oxidation product, and then oxidizing the remaining water-soluble residue.

REFERENCES:
patent: 3700700 (1972-10-01), Actermatt
patent: 3873582 (1975-03-01), Szekely

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