PROCESS FOR THE CONTINUOUS PREPARATION OF PERYLENETETRACARBOXYLIC DIIMIDES

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...

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Bibliographic Details
Main Author FLATT, THOMAS R
Format Patent
LanguageEnglish
French
Published 31.01.1993
Edition5
Subjects
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Summary: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 perylenetetra- carboxylic diimide. Mo-3660 VE-014 PROCESS FOR THE CONTINUOUS PREPARATION OF PERYLENETETRACARBOXYLIC DIIMIDES 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.
Bibliography:Application Number: CA19922073747