Patent ID: 6896958
Filing Date: 2005-05-24
Classification: C09D,Y10T

Abstract:
1. A process for forming a substantially transparent, abrasion-resistant film from a film-forming composition containing surface-treated nanocrystalline particles dispersed in a cross-linkable resin, the process comprising the steps of: (a) adding nanocrystalline particles to a medium, said nanocrystalline particles being selected from the group consisting of ceramics and metals; (b) mixing the nanocrystalline particles and medium to form a dispersion; (c) adding a surface treatment solution to the nanocrystalline particle dispersion, said surface treatment solution comprising one or more siloxane species; (d) mixing the nanocrystalline particle dispersion with the surface treatment solution such that said one or more siloxane species are disposed at the surface of at least some of said particles, whereby at least some surface-treated nanocrystalline particles are obtained; (e) adding said surface-treated nanocrystalline particles to a cross-linkable resin to from a film forming composition, wherein the surface treated nanocrystalline particles are non-aggregating; (f) applying said film-forming composition to a substrate; (g) forming a substantially transparent abrasion-resistant film on said substrate from said film-forming composition.