Polymer particles containing a cross-linked polymer core and a linear non-cross-linked polymer shell, and toner formed therefrom
AssigneeXerox Corporation
InventorsKaren Moffat, Daryl Vanbesien, Ke Zhou, Paul Gerroir, Valerie Farrugia, Maria McDougall, Edward Zwartz
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Abstract
Polymer particles comprising a cross-linked polymer core and a linear non-cross-linked polymer shell may be formed by emulsion polymerization. The polymer particles may be used in forming toner.
Claims20
A latex comprising polymer particles comprising a cross-linked polymer core and a linear non-cross-linked polymer shell.
A method for forming polymer particles having a core and a shell, said method comprising:
- polymerizing a first monomer emulsion containing at least one cross-linker to form cross-linked core particles;
- and
- polymerizing a second monomer emulsion in the presence of said cross-linked core particles to form a linear non-cross-linked shell on said cross-linked core particles, thus forming polymer particles having a core and a shell.
Toner comprising coalesced aggregates of colorant and polymer particles, said polymer particles comprising a cross-linked polymer core and a linear non-cross-linked polymer shell.
Dependencies are inferred from the claim text.