Abstract: The invention provides a process for preparing core-shell composite particles comprising a polyester, polymerized ethylenically unsaturated silane compounds, and optionally a hydrophobic surface treatment. The invention further provides a composite particle comprising a polyester and a radically polymerized ethylenically unsaturated silane compound.

Abstract: Metal oxide-polymer composite particles have a median particle size D50 of 40-75 nm or 100-150 nm and an average RTA of at least 0.06. Alternatively or in addition, metal oxide-polymer composites comprise two or more populations of metal oxide particles differing in size, particle size distribution, or shape. Alternatively or in addition, the use of a multicomponent hydrophobizing system including an alkylsilane to fabricate metal oxide-polymer composite particles increases the tribocharge of the composite particles.

Abstract: The invention provides a process for preparing core-shell composite particles comprising a polyester, polymerized ethylenically unsaturated silane compounds, and optionally a hydrophobic surface treatment. The invention further provides a composite particle comprising a polyester and a radically polymerized ethylenically unsaturated silane compound.

Abstract: The invention provides a process for preparing core-shell composite particles comprising a polyester, polymerized ethylenically unsaturated silane compounds, and optionally a hydrophobic surface treatment. The invention further provides a composite particle comprising a polyester and a radically polymerized ethylenically unsaturated silane compound.

Abstract: The invention provides a process for preparing core-shell composite particles comprising a polyester, polymerized ethylenically unsaturated silane compounds, and optionally a hydrophobic surface treatment. The invention further provides a composite particle comprising a polyester and a radically polymerized ethylenically unsaturated silane compound.

Abstract: This invention provides metal oxide particles surface-treated with a hydrophobicity-imparting agent, methods of making such, and toner compositions comprising the same.

Abstract: This invention provides metal oxide particles surface-treated with a hydrophobicity-imparting agent, methods of making such, and toner compositions comprising the same.

Abstract: This invention provides metal oxide particles surface-treated with a hydrophobicity-imparting agent, methods of making such, and toner compositions comprising the same.

Abstract: Treated metal oxide particles include metal oxide particles treated with at least a charge modifying agent. The charge modifying agent is represented by the following formula: An-Zc—Yb—Ar(EW)a wherein Ar represents an aromatic group, EW represents an electron withdrawing group, Y represents a spacer group, Z represents an alkylene group, An represents an anchor group, a is an integer from 1 to 5, b is 0 or 1, and c is 0 or 1. The treated metal oxide particles may also be treated with a second charge modifying agent or with a hydrophobicity-imparting agent. A toner composition including toner particles and treated metal oxide particles is also disclosed.

Abstract: This invention provides metal oxide particles surface-treated with a cyclic silazane and a hydrophobicity-imparting agent, methods of making such, and toner compositions comprising the same.

Abstract: The invention provides a toner composition comprising resin particles, a colorant, and a toner additive, wherein the toner additive comprises carbon-silica dual phase particles, wherein the carbon-silica dual phase particles comprise aggregates of carbon black comprising at least one silicon-containing region, and wherein the carbon-silica dual phase particles are distributed on the surface of the resin particles. The invention also provides a method of preparing the aforesaid toner composition.

Abstract: The invention provides a toner composition comprising resin particles, a colorant, and a toner additive, wherein the toner additive comprises carbon-silica dual phase particles, wherein the carbon-silica dual phase particles comprise aggregates of carbon black comprising at least one silicon-containing region, and wherein the carbon-silica dual phase particles are distributed on the surface of the resin particles. The invention also provides a method of preparing the aforesaid toner composition.

Abstract: The invention provides a toner composition comprising toner particles and composite metal oxide particles comprising a core consisting of a first metal oxide and a coating consisting of a second metal oxide. The core is substantially spherical and non-aggregated. The invention also provides a method for the preparation of a toner composition.

Abstract: Treated metal oxide particles include metal oxide particles treated with at least a charge modifying agent. The charge modifying agent is represented by the following formula: An-Zc-Yb—Ar(EW)a wherein Ar represents an aromatic group, EW represents an electron withdrawing group, Y represents a spacer group, Z represents an alkylene group, An represents an anchor group, a is an integer from 1 to 5, b is 0 or 1, and c is 0 or 1. The treated metal oxide particles may also be treated with a second charge modifying agent or with a hydrophobicity-imparting agent. A toner composition including toner particles and treated metal oxide particles is also disclosed.

Abstract: This invention provides metal oxide particles surface-treated with a cyclic silazane and a hydrophobicity-imparting agent, methods of making such, and toner compositions comprising the same.

Abstract: This invention provides metal oxide particles surface-treated with a hydrophobicity-imparting agent, methods of making such, and toner compositions comprising the same.

Abstract: The invention provides a toner composition comprising toner particles and composite metal oxide particles comprising a core consisting of a first metal oxide and a coating consisting of a second metal oxide. The core is substantially spherical and non-aggregated. The invention also provides a method for the preparation of a toner composition.

Abstract: A modified particle is disclosed wherein a particle has an attached group having the formula: wherein Ar represents an aromatic group; R1 represents a bond, an arylene group, an alkylene group, wherein R4 is an alkyl or alkylene group or an aryl or arylene group; R2 and R3, which can be the same or different, represent hydrogen, an alkyl group, an aryl group, —OR5, —NHR5, —NR5R5, or —SR5, wherein R5, which is the same or different, represents an alkyl group or an aryl group; and SFR represents a stable free radical.

Abstract: Methods of making a silica-coated carbon product are described. In one method, an aqueous media or solution and a carbon product are contacted with a solution comprising a silicate substantially free of metal ions, for a sufficient time and temperature to form the silica-coated carbon product. A method of making a silica-coated product by contacting the aqueous media and a carbon product with a solution comprising monosilicic acid is also described as well as exchanging metal ions in a solution comprising metallic silicate for hydrogen ions and contacting an aqueous media and a carbon product with the solution to form silica-coated carbon products. Silica-coated carbon products resulting from these methods are also described and include a plurality of silica-coated products wherein each of the silica-coated products are substantially and uniformly coated with silica and in the substantial absence of free silica.

Abstract: A modified particle is disclosed wherein a particle has an attached group having the formula: 1