US Patent 7465497 - High breakdown voltage nanocomposites

US Patent 7465497

This patent from General Electric teaches high-k dielectrics for breakdown resistant spark plugs having based on coated nanoparticle polymer composites. Claim 1 reads:

1. A composition comprising:

a thermoplastic polymer, wherein the thermoplastic polymer has a glass transition temperature greater than or equal to about 100.degree. C.; and

nanoparticles;

wherein the nanoparticles comprise a substrate upon which is disposed a coating composition;

wherein the substrate has a different dielectric constant from that of the coating composition;

and wherein the composition has a breakdown resistance of greater than or equal to about 200 volts/micrometer.