Process for the continuous preparation of perylenetetracarboxyli

Details Process for the continuous preparation of perylenetetracarboxyli Process for the continuous preparation of perylenetetracarboxyli

1991-07-30

1993-09-21

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C08H 1714

Patent

active

052470881

ABSTRACT:
This invention relates to a novel process for the continuous preparation of perylenetetracarboxylic diimides by fusion of a naphthalimide in a mixture of an alkali metal hydroxide and, optionally, an alkali metal carboxylate to form an initial leuko condensation product that is subsequently oxidized in an aqueous medium to form the perylenetetracarboxylic diimide.

REFERENCES:
patent: 1200848 (1916-09-01), Kardos et al.
patent: 1913052 (1933-06-01), Jaeger et al.
patent: 3446810 (1969-05-01), Dien et al.
patent: 3615800 (1971-10-01), Spietschka et al.
patent: 4588814 (1986-05-01), Spietschka et al.
Chemical Abstracts vol. 42:5892i (1948).

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