Squarylium charge generating dye and electrophotographic photoco

Details Squarylium charge generating dye and electrophotographic photoco Squarylium charge generating dye and electrophotographic photoco

1986-05-05

1987-06-30

Brust, Joseph Paul

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

548524, 430 58, G03G 1506, C07D29508

Patent

active

046770453

ABSTRACT:
A squarylium dye molecule is synthesized from a phenolic precursor. The resulting hydroxy pyrrolidino squarylium (OHPYRRSQ) dye does not have to be purified in order to provide the dye with a negative response in the Ames test for mutagenicity. A xerographic photoconductor using the molecule shows superior electrophotographic performance.

REFERENCES:
patent: 3824099 (1974-07-01), Champ et al.
patent: 4500621 (1985-02-01), Wurster
Angew. Chem. Internat. Edit., vol. 5 (1966), No. 10, "Syntheses and Derivatives of Squaric Acid", by Dr. G. Maahs and Dr. P. Hegenberg, pp. 888-893.
Angew. Chem. Internat. Ed., vol. 5, (1966), #10, pp. 893-894; "Condensation Products of Squaric Acid and Azulenic Hcbn.," Ziegenbein, et al.
Angew. Chem. Int. Ed., 5, (1966), #10, p. 894, "Condensation Products of Squaric Acid and Ttert. Aromatic Amines", Sprenger et al.

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