Tetrazonium salt, novel disazo compound, method of preparing sam

Details Tetrazonium salt, novel disazo compound, method of preparing sam Tetrazonium salt, novel disazo compound, method of preparing sam

1983-05-12

1984-12-04

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 58, 430 72, G03G 506, G03G 514

Patent

active

044865228

ABSTRACT:
A novel tetrazonium salt compound having the general formula (II), namely an intermediate useful for synthesis of a wide scope of disazo compounds, was obtained: ##STR1## wherein Y is an anion functional group. A novel disazo compound is further disclosed having the general formula (I): ##STR2## wherein X is a substituted or unsubstituted aromatic ring or hetero ring, and Ar is a substituted or unsubstituted aromatic ring or hetero ring, together with a method for making said disazo compound which comprises using, as a starting material, 2,7-diaminoanthraquinone having the formula (III): ##STR3## and a coupler having the general formula (IV): ##STR4## wherein X and Ar are the same as defined above. Further, a multilayer type electrophotographic element comprising a charge carrier generating layer and a charge transfer layer and using, as a charge carrier generating substance, said disazo compound having the general formula (I), was provided.

REFERENCES:
patent: 4293628 (1981-10-01), Hashimoto
patent: 4343882 (1982-08-01), Hashimoto
patent: 4418134 (1983-11-01), Patel

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