Crystalline organic pigment sensitizers for photoconductive laye

Details Crystalline organic pigment sensitizers for photoconductive laye Crystalline organic pigment sensitizers for photoconductive laye

1974-05-03

1977-04-19

Klein, David

Gas separation: apparatus

Magnetic separating means

96 15, 96 16, G03G 509

Patent

active

040186075

ABSTRACT:
A specific class of crystalline organic pigments having the formula ##STR1## WHEREIN N IS 1 OR 2; X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR2## R.sup.1, R.sup.2, and R.sup.3 are independently selected from the group consisting of hydrogen, halogen, alkoxy, NO.sub.2, alkyl, SO.sub.3 H or alkali metal salts thereof, and COOH or alkali metal salts thereof; and wherein R.sup.2 and R.sup.3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR3## or COOM wherein M is alkyl or an alkali or alkaline earth metal is useful as sensitizers for photoconductive compositions in electrophotographic processes.

REFERENCES:
patent: 3384632 (1968-05-01), Solodar
patent: 3622341 (1971-11-01), Lee
patent: 3684548 (1972-08-01), Contois
patent: 3775105 (1973-11-01), Kukla

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