SENSITIZATION OF ORGANIC PHOTOCONDUCTIVE COMPOSITIONS WITH POLYMERIC CHEMICAL SENSITIZERS HAVING APPENDED MONOVALENT CHLORENDATE RADICALS

摘要

Abstract of the DisclosurePhotoconductive insulating compositions comprisingorganic photoconductors are described. Organic photoconductormaterials such as p-terphenyl or polyvinylcarbazole aredispersed or dissolved in an electrically insulating binderand chemically sensitized with a polymer having repeatingunits to which are appended a monovalent chlorendate radical.When employing the aforesaid polymeric chemical sensitizer,acrylic polymers or cellulose nitrates are especially usefulas insulating binders for heterogeneous compositions of thesubject type. Or, by omitting conventional binders, thedescribed polymeric chemical sensitizer can function simultan-eously as chemical sensitizer and insulating binder for suchphotoconductive compositions. Further, the present polymericchemical sensitizer is particularly useful with one or moreadditional chemical sensitizers to yield sensitized compositionswith especially desirable properties.Compositions comprising the polymeric chemicalsensitizers of this invention are applied to an electricallyconducting support to prepare electrophotographic elements.-1-