Abstract: A process for the preparation of carrier powder polymer coatings which comprises the supercritical polymerization of a monomer and surfactant in a supercritical medium, and thereafter adding thereto a second monomer and initiator, and polymerizing the second monomer.

Abstract: A process for the preparation of carrier powder polymer coatings which comprises the supercritical polymerization of a monomer and surfactant in a supercritical medium.

Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.

Abstract: A process for the preparation of conductive submicron polymeric particles which comprises mixing at least one monomer with a polymerization initiator, a crosslinking component, and a chain transfer component; adding thereto an AB type block copolymer; effecting bulk polymerization until from about 10 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler, or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.05 to about 1 micron in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the product.

Abstract: A toner composition comprised of resin and pigment particles where the pigment particles are treated with a fluorosilane polymer.

Abstract: Submicron to micron sized conductive particles, on the order of 0.05 to 5 micron in average particle diameter, are produced using a semisuspension polymerization process in which the aqueous phase of the suspension contains an inorganic salt such as potassium iodide. The inorganic salt inhibits the formation of polymer particles that do not contain conductive filler so as to be non-conductive. The process also allows for conductive filler to be added at the start of the process. Powder coatings made from the submicron sized conductive particles have a high and uniform conductivity.

Abstract: A process for the preparation of toner particles which comprises a suspension polymerization followed by a starved feed monomer addition process and wherein the suspension polymerization comprises the formation of an organic phase comprised of monomer, initiator, pigment and optional toner additives; adding the organic phase to an aqueous phase comprised of water and a stabilizer; shearing the resulting organic and aqueous phase mixture; polymerizing the monomer by heating to enable toner particles; and wherein said starved feed addition comprises adding a second monomer, optionally with crosslinking agents or initiators, and heating to polymerize the added monomer.