Multifunctional coated powders and high solids dispersions
AssigneeNanophase Technologies Corporation
InventorsKushal D. Shah, Harry W. Sarkas, Patrick G. Murray
Life of this patent
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Abstract
A coated powder comprises (a) nanoparticles, and (b) a coating, on the surface of the nanoparticles. The coating comprises (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties.
Claims31
A coated powder comprising:
- (a) nanoparticles, and
- (b) a coating, on the surface of the nanoparticles, comprising
- (1) silica moieties,
- (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and
- (3) poly(dialkyl)siloxane moieties.
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A process for producing a coated powder, comprising coating nanoparticles with a polymer, by polymerizing a composition comprising
- (i) the nanoparticles,
- (ii) a first alkoxy silane selected from the group consisting of a tetra-alkoxy silane, a poly(tetra-alkoxy silane), and mixtures thereof,
- (iii) an organo alkoxysilane selected from the group consisting of mono-organo alkoxysilane, bi-organo alkoxysilane, tri-organo alkoxysilane, and mixtures thereof, and
- (iv) a second alkoxy silane selected from the group consisting of a poly(dialkyl)siloxane, and mixtures thereof.
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Dependencies are inferred from the claim text.