Process for preparing squarylium compounds

Details Process for preparing squarylium compounds Process for preparing squarylium compounds

1988-12-01

1991-08-20

Raymond, Richard L.

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

Organic compounds

Amino nitrogen containing

564 92, 564185, C07C21568, C07C21570

Patent

active

050416650

ABSTRACT:
A process for preparing a squarylium compound useful as a photoconductive material for an electrophotographic photoreceptor, in which process comprises reacting an arylhydroxycyclobutenedione salt or a hydroxycyclobutenedione derivative with an aniline derivative is disclosed. The process comprises dropwise adding a solution of the arylhydroxycyclobutenedione salt or hydroxycyclobutenedione derivative in a solvent, to an alcohol solution of the aniline derivative in an alcohol solvent. An electrophotographic photoreceptor produced by using the thus obtained squarylium compound exhibits and sensitivity, satisfactory chargeability, low dark decay, low residual potential, and excellent stability after repeated use.

REFERENCES:
patent: 4524219 (1985-06-01), Law
patent: 4524220 (1985-06-01), Law
patent: 4525592 (1985-06-01), Law et al.
patent: 4624904 (1986-11-01), Kazmaier et al.
patent: 4700001 (1987-10-01), Tanaka et al.
patent: 4707427 (1987-11-01), Tanaka et al.

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