Surface decorated particles
First Claim
1. A surface decorated electrophotographic toner particle comprising:
- a core particle phase having a first outer surface; and
fine inorganic particles each having a second surface with a first portion of the second surface facing the core particle and a second portion of the second surface positioned away from the core particle;
wherein the first portion of the second surface of the fine inorganic particles are hydrogen bonded to the first outer surface of the core particle phase and the second portion of the second surface of the fine inorganic particles have hydrophobic groups covalently bonded to the second portion of the second surfaces of the fine inorganic particles positioned away from the core particle phase.
14 Assignments
0 Petitions
Accused Products
Abstract
A surface decorated particle including a core particle phase having an outer surface; and fine inorganic particles on the outer surface of the core particle phase; wherein the fine inorganic particles have hydrophobic groups covalently bonded primarily on portions of surfaces of the fine inorganic particles positioned away from the core particle phase. Such surface decorated particles are obtainable by a method including stabilizing dispersed hydrophobic phase particles in an aqueous phase with fine inorganic particles having a relatively hydrophilic surface; and treating the stabilized dispersed hydrophobic phase particles with a hydrophobic group containing reactant to form hydrophobic groups covalently bonded to surfaces of the fine inorganic particles. In a particular embodiment, such surface decorated particles are obtainable by a limited coalescence process for preparing binder polymer particles using inorganic stabilizer particles that provide a plurality of surface bonding sites and reacting such sites with a plurality of alkoxy silane moieties that contains pendant hydrophobic groups.
16 Citations
14 Claims
-
1. A surface decorated electrophotographic toner particle comprising:
-
a core particle phase having a first outer surface; and fine inorganic particles each having a second surface with a first portion of the second surface facing the core particle and a second portion of the second surface positioned away from the core particle; wherein the first portion of the second surface of the fine inorganic particles are hydrogen bonded to the first outer surface of the core particle phase and the second portion of the second surface of the fine inorganic particles have hydrophobic groups covalently bonded to the second portion of the second surfaces of the fine inorganic particles positioned away from the core particle phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification