摘要:
Porous polymer microspheres having a size of from about 3 to about 50 microns and a geometric standard deviation of about 1.25 or less are disclosed. The porous polymer microspheres are made by a method including the steps of preparing an emulsion comprised of polymer particles having an average particle size of less than about 3 microns and a diluent, subjecting the emulsion to an aggregating condition to form aggregated polymer particles, optionally coalescing the aggregated polymer particles, and removing the diluent to form the porous polymer microspheres.
摘要:
Imaging members useful in electrostatographic apparatuses, including printers, copiers, other reproductive devices, and digital apparatuses. More particularly, imaging members having nano polymeric gel particles embedded into one or more layers of the imaging member that provide for increased mechanical strength and improved wear.
摘要:
Stabilizer compositions are provided having carboxylic acid groups. By esterifying some of the available carboxylic acid groups, the carboxylic acid number of the stabilizer may be adjusted. Such stabilizers may be utilized, in embodiments, for forming toner compositions.
摘要:
A process for the preparation of toner comprising generating a latex emulsion of resin, water, and an ionic surfactant, and a colorant dispersion of a surface modified colorant and water, and wherein the latex emulsion is blended with the surface modified colorant dispersion; heating the resulting mixture below or equal to about the glass transition temperature (Tg) of the latex resin to form aggregates; optionally adding a second latex comprised of submicron resin particles suspended in an aqueous phase resulting in a shell or coating wherein the shell is optionally of from about 0.1 to about 1 micron in thickness, and wherein optionally the shell coating is contained on 100 percent of the aggregates; heating the resulting aggregate suspension above about the Tg of the latex resin; and optionally isolating the toner.
摘要:
A method for displaying an image with an electrophoretic display device that includes a multiplicity of individual reservoirs, each containing an electrophoretic display fluid, located between two conductive film substrates, at least one of which is transparent, includes appropriately applying an electric field and a magnetic force to a selected individual reservoir in a manner to cause either a first set of particles or a second set of particles of the display fluid to be displayed. The first set of particles exhibit a color different from and contrasting to a color of the second set of particles, and also preferably a different charging property.
摘要:
A process for the preparation of an encapsulated colorant comprising the emulsion polymerization of a miniemulsion of monomer, colorant, ionic surfactant, cosurfactant, and optional nonionic surfactant, and wherein the resulting encapsulated colorant containing a polymer shell is of a diameter of from about 100 to about 1,000 nanometers.
摘要:
A process comprising aggregating a colorant encapsulated polymer particle containing a colorant with colorant particles and wherein said colorant encapsulated latex is generated by a miniemulsion polymerization.
摘要:
A process for the preparation of an ink which comprises mixing an ink vehicle, a colorant and a latex, and wherein said latex is generated by the polymerization of a mixture of olefinic monomers, and which polymerization is accomplished in the presence of a nonionic polyethoxylated surfactant, and which surfactant possesses an HLB value of from about 16.5 to about 21.