Photoconductive member and perylene processes

Details Photoconductive member and perylene processes Photoconductive member and perylene processes

1997-06-02

1998-12-29

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

549232, G03G 5047

Patent

active

058539336

ABSTRACT:
A process for the preparation of perylene tetracarboxylic acid dianhydride comprising the dissolution thereof in an aqueous alkaline solution, or optionally an amine solution; converting the salt formed to the corresponding tetracarboxylic acid of said perylene tetracarboxylic dianhydride; heating the resulting tetracarboxylic acid; washing the dianhydride formed until the filtrate pH indicates substantially complete removal of the acid; and drying said dianhydride.

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patent: 5683842 (1997-11-01), Duff et al.

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