Humidity tolerant charge director compositions

G - Physics – 03 – G

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G03G 9/135 (2006.01) G03G 9/13 (2006.01)

Patent

CA 2064756

A humidity tolerant charge director composition comprises a fine dispersion in a non-polar organic solvent of a charge director material comprising a molecular charge director compound and an ionic charge director compound, each being conjugated to a polymer which is insoluble in non-polar organic solvents. The charge director material is prepared by adding to a solution of a molecular charge director compound and an ionic charge director compound in a non-polar organic solvent, a monomer compound capable of polymerizing to form a polymer which is insoluble in said solvent, initiating a polymerization reaction of the monomer compound and allowing the polymerization reaction to progress to completion.

Une composition de direction de charge à tolérance d'humidité comporte dans un solvant organique sans pôle une dispersion fine d'un matériau directeur de charge comportant un composé directeur de charge moléculaire ainsi qu'un composé directeur de charge ionique, chacun étant conjugué à un polymère qui est insoluble dans des solvants organiques sans pôle. Le matériau directeur de charge est préparé par l'addition à une solution d'un composé directeur de charge moléculaire et d'un composé directeur de charge ionique dans un solvant organique sans pôle, d'un composé monomère pouvant se polymériser pour former un polymère qui est insoluble dans ledit solvant, de manière à provoquer une réaction de polymérisation du composé monomère et à permettre à la réaction de polymérisation d'arriver à son terme.

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