Xerox Corporation

Sam R Turner

Milan Stolka

John M Pochan

Trevor I Martin

Paul D Szabo

There is disclosed a process for the direct iodination of polyarylidene compounds to provide highly pure para-substituted diiodo derivatives. The polyarylidene compound is reacted with iodine in the presence of an oxidant, unreactive with the aromatic nucleus, in a reaction medium containing a solvent for the polyarylidene compound, a catalyst and water. The reaction medium is recovered for reuse in subsequent reactions by the removal of spent oxidant which, in the preferred embodiment, is based upon the temperature dependent differences in solubility between the diiodo derivative and the spent oxidant.

Chemical process

Disclosed are electron acceptor monomers of the formula: ##STR1## wherein R is ##STR2## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO.sub.2, halogen, cyano and --CF.sub.3 ;

Electron acceptor monomers and polymers

Disclosed are monomers of the formula: ##STR1## wherein R is ##STR2## R' is hydrogen or methyl; R' is alkyl of 1-10 carbon atoms;

Polymers having pendant acceptor groups

Electron acceptor monomers

Disclosed are electron acceptor monomers of the formula: ##STR1## wherein R is ##STR2## or --H; R' is hydrogen or methyl;

Disclosed are monomers of the formula: ##STR1## WHEREIN R is ##STR2## R' is hydrogen or methyl; R' is alkyl of 1-10 carbon atoms;

Homopolymers of a fluorenone derivative having pendant electron acceptor

Disclosed are monomers of the formula: ##STR1## WHEREIN R is ##STR2## R' is hydrogen or methyl;

Monomers having pendant electron acceptor groups-process for preparation

Process for preparation of monomers of the formula ##STR1## WHEREIN R is hydrogen or methyl; X and Y are independently selected from the group consisting of NO.sub.2, halogen, --CN and --CF.sub.3 ; and

9-Fluorenyl acrylates

Disclosed are monomers of the formula: ##STR1## R' is hydrogen or methyl; R' is alkyl of 1-10 carbon atoms;

Electrophotographic imaging member of monomers having pendant electron

Process for preparation of monomers of the formula ##STR1## wherein R is hydrogen or methyl;

Electron acceptor polymers

Method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group. Copolymers prepared according to this method can be represented by the following formula: ##STR1## WHEREIN R is hydrogen or methyl;

Intrachain charge transfer complexes use in electrophotographic imaging

Composite photoconductive insulating films comprising a thin layer of photoconductive materials having substantial spectral response in the visible region of the electromagnetic spectrum and a substantially colorless insulating layer contiguous therewith comprising a minor portion of electronically inert binder in a major portion of an electronically active oligomer of the formula: ##STR1## R' is hydrogen or methyl; R' is alkyl of 1-10 carbon atoms;

Photoconductive insulating films comprising fluorenone-substituted

Fluorenone carboxyle acid esters

Disclosed is a method for enhancing the resistance to crystallization of solid solutions containing electron acceptor molecules. According to this method, electron acceptor molecules are chemically modified whereby the resulting compound is capable of undergoing polymerization. This modified material is thereafter dissolved in a suitable polymeric resin and subsequently exposed to a source of activating energy thereupon causing such modified material to polymerize within the polymeric resin. The resulting composition exhibits enhanced resistance to crystallization and thus is suitable for use in electrophotographic devices and methods.

Method for enhancing solid solution stability of electron acceptor

Disclosed are electron acceptor monomers of the formula: ##STR1## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO.sub.2, halogen, cyano and --CF.sub.3 ;

Growing community of inventors

Webster, NY, United States of America

Sam R Turner