Abstract: The production of ultrafine metal carbide powders from polymeric powder and metallic precursor powder starting materials is disclosed. In certain embodiments, the polymeric powder may comprise polypropylene, polyethylene, polystyrene, polyester, polybutylene, nylon, polymethylpentene and the like. The metal precursor powder may comprise pure metals, metal alloys, intermetallics and/or metal-containing compounds such as metal oxides and nitrides. In one embodiment, the metal precursor powder comprises a silicon-containing material, and the ultrafine powders comprise SiC. The polymeric and metal precursor powders are fed together or separately to a plasma system where the feed materials react to form metal carbides in the form of ultrafine particles.

Abstract: Disclosed are methods for making ultrafine particles, apparatus for making ultrafine particles, and coating compositions comprising ultrafine particles made by such methods and/or apparatus.

Abstract: Coating compositions are disclosed that include corrosion resisting particles. Also disclosed are methods for making such coating compositions and substrates at least partially coated with a coating deposited from such a coating composition and multi-component composite coatings, wherein at least one coating layer is deposited from such a coating composition.

Abstract: An electrodepositable coating composition is provided including a resinous phase and corrosion resisting particles dispersed in an aqueous medium. Methods of preparing and using the composition also are provided.

Abstract: Disclosed are methods for making ultrafine silica particles in a plasma system, apparatus for making ultrafine silica particles, and coating compositions comprising ultrafine silica particles made by such methods and/or apparatus.

Abstract: Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating layer is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.

Abstract: An electrodepositable coating composition is provided including a resinous phase and catalyst nanoparticles dispersed in an aqueous medium, the resinous phase including (a) at least one active hydrogen-containing, ionic salt group-containing resin; and (b) at least one curing agent; and the catalyst nanoparticles for effecting cure between the resin (a) and the curing agent (b). The catalyst nanoparticles have an average BET specific surface area greater than 20 square meters per gram (m2/g). Methods of preparing and using the composition also are provided.

Abstract: The present invention provides a cerium oxide particulate composition and a process for preparing a cerium oxide particulate composition comprising aggregates of approximately spherical primary particles of cerium oxide. The method involves preparing a solution of a cerium oxide precursor, aerosolizing the cerium oxide precursor solution, and heating the aerosol to provide the cerium oxide particle composition.

Abstract: The present invention provides a cerium oxide particulate composition and a process for preparing a cerium oxide particulate composition comprising aggregates of approximately spherical primary particles of cerium oxide. The method involves preparing a solution of a cerium oxide precursor, aerosolizing the cerium oxide precursor solution, and heating the aerosol to provide the cerium oxide particle composition.

Abstract: The present invention provides a cerium oxide particulate composition and a process for preparing a cerium oxide particulate composition comprising aggregates of approximately spherical primary particles of cerium oxide. The method involves preparing a solution of a cerium oxide precursor, aerosolizing the cerium oxide precursor solution, and heating the aerosol to provide the cerium oxide particle composition.

Abstract: The present invention provides a catalytic converter for treating internal combustion engine exhaust comprising a substrate, fumed metal oxide aggregates adhered to the substrate, wherein no non-fumed metal oxide is present in the intra-aggregate voids, and at least one catalyst adhered to the fumed metal oxide aggregates. The present invention also provides a method of preparing such a catalytic converter, as well as a method of treating the exhaust of an internal combustion engine comprising contacting the exhaust of an internal combustion engine with a catalytic converter of the present invention.

Abstract: A slurry for use in chemical-mechanical polishing of a metal layer comprising high purity fine metal oxide particles uniformly dispersed in a stable aqueous medium.

Abstract: Ceramic oxide powders and a method for their preparation. Ceramic oxide powders are obtained using a flame process whereby two or more precursors of ceramic oxides are introduced into a counterflow diffusion flame burner wherein said precursors are converted into ceramic oxide powders. The morphology, particle size, and crystalline form of the ceramic oxide powders are determined by process conditions.