Core-shell polymer nanoparticles and method of making emulsion aggregation particles using same
AssigneeXerox Corporation
InventorGuerino G. Sacripante
Life of this patent
Estimating the term…
Abstract
Nano-sized particles for use in making emulsion aggregation toner particles have a core portion and a shell portion, wherein the core portion of the nano-sized particles includes crystalline resin and the shell portion includes amorphous resin and is substantially to completely free of the crystalline resin.
Claims27
Core-shell nano-sized particles comprising particles having a core and a shell, wherein the core of the particles comprises crystalline polyester and the shell of the particles comprises amorphous polyester and is substantially to completely free of crystalline material, wherein the shell encapsulates the core, and wherein the nano-sized particles have an average particle size of about 1 nm to about 250 nm.
Emulsion aggregation toner particles comprising:
- a core, wherein the core is aggregated from nanoparticles having a core and a shell, wherein the core of the nanoparticles comprises crystalline polyester and the shell of the nanoparticles comprises amorphous polyester and is substantially to completely free of crystalline material, wherein the shell of the nanoparticles encapsulates the core of the nanoparticles, and wherein the nanoparticles have an average particle size of about 1 nm to about 250 nm;
- and
- a shell that encapsulates the aggregated core, wherein the shell is substantially free of the crystalline material.
An emulsion aggregation toner particle comprising:
- a core, wherein the core is aggregated from nanoparticles having a core and a shell, wherein the core of the nanoparticles comprises crystalline polyester and the shell of the nanoparticles comprises amorphous polyester and is substantially to completely free of crystalline material, wherein the shell of the nanoparticles encapsulates the core of the nanoparticles, and wherein the nanoparticles have an average particle size of about 1 nm to about 250 nm;
- a first shell that encapsulates the aggregated core forming a primary aggregate, wherein the shell is substantially free of the crystalline material, and
- a second shell that encapsulates the primary aggregate.
Dependencies are inferred from the claim text.