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US 2004/0167257 A1Published application
Preparation of metal nanoparticles and nanocomposites therefrom
AssigneeAPS Laboratory
InventorHong-Son Ryang
Life of this patent
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Abstract
Disclosed are nanocomposites made of guest metal nanoparticles and metal oxide sols made by mixing at least one metal alkoxide, at least one organosilane, at least one boron oxide compound, and a liquid. Also disclosed are dielectric composites containing a dielectric material such as a polymer and the nanocomposites.
Claims21
A nanocomposite made by mixing:
- from about 0.01% to about 80% by weight of at least one guest metal nanoparticle;
- and
- from about 20% to about 99.99% by weight of a metal oxide sol made by mixing:
- at least one metal oxide, wherein the metal is a transition metal, a post-transition metal, an alkali metal, or alkaline earth metal;
- at least one organosilane;
- at least one boron oxide compound selected from the group consisting of boric acid, alkoxy boron compounds, hydrocarbyl boric acids, hydrocarbyl hydroxy boron alkoxides, and hydroxy boron alkoxides;
- and
- a liquid.
5 more elements
A dried nanocomposite, comprising:
- from about 0.01% to about 80% by weight of at least one guest metal nanoparticle;
- and
- from about 20% to about 99.99% by weight of a metal oxide sol composition, comprising:
- from about 15% to about 60% by weight of at least one metal oxide, wherein the metal is a transition metal, a post-transition metal, an alkali metal, or alkaline earth metal;
- from about 25% to about 75% by weight of at least one organosilane;
- and
- from about 5% to about 30% by weight of at least one boron oxide compound,
- wherein the dried nanocomposite comprises less than about 0.5% by weight water.
5 more elements
A dielectric composite comprising:
- from about 1% to about 99.99% by weight of a dielectric material;
- from about 0.01% to about 99% by weight of a nanocomposite substantially uniformly dispersed within the dielectric material, the nanocomposite comprising from about 0.01% to about 80% by weight of at least one guest metal nanoparticle;
- and from about 20% to about 99.99% by weight of a metal oxide sol made by mixing at least one metal oxide, wherein the metal is a transition metal, a post-transition metal, an alkali metal, or alkaline earth metal, at least one organosilane;
- at least one boron oxide compound selected from the group consisting of boric acid, alkoxy boron compounds, hydrocarbyl boric acids, hydrocarbyl hydroxy boron alkoxides, and hydroxy boron alkoxides, and a liquid.
1 more element
Dependencies are inferred from the claim text.