Patent ID: 7972691
Filing Date: 2011-07-05
Classification: B82Y,C01P,C08K,C09C,C09J,Y10T

Abstract:
1. A composite comprising a polymer and surface modified metal oxide particles at a loading of at least 5 weight percent of the composite, wherein the metal oxide particles have a number average primary particle diameter less than about 20 nanometers and a z-average secondary particle size of no more than about 100 nanometers, wherein the surface modification comprises a plurality of bonded molecules along the surface of the particles and wherein the composite formed into a film with a thickness of 5 microns on a transparent substrate has a transmittance at one visible wavelength of at least about 90% relative to the transmittance of the substrate without the composite coating, and wherein the z-average secondary particle size is no more than a factor of four times the average primary particle diameter.