Patent ID: 8492316
Filing Date: 2013-07-23
Classification: B82Y,C04B,C09K,E21B,Y10T

Abstract:
1. An impact modified nanocomposite spherical bead comprising: a polymer matrix, wherein said polymer matrix comprises a styrene-divinylbenzene copolymer or a styrene-ethylvinylbenzene-divinylbenzene terpolymer; from 0.1 to 65 weight percent of a polymeric impact modifier; and from 0.001 to 60 volume percent of nanofiller particles possessing a length that is less than 0.5 microns in at least one principal axis direction; said nanofiller particles comprising at least one of dispersed fine particulate material, fibrous material, discoidal material, or a combination of such materials, and wherein said nanofiller particles are selected from the group of nanofillers consisting of: carbon black, fumed silica, fumed alumina, carbon nanotubes, carbon nanofibers, cellulosic nanofibers, fly ash, polyhedral oligomeric silsesquioxanes, or mixtures thereof, wherein said nanofiller particles are dispersed throughout the impact modified nanocomposite spherical bead, wherein said impact modified nanocomposite spherical bead has a diameter ranging from 0.1 mm to 4 mm, and wherein said impact modified nanocomposite spherical bead has about neutral buoyancy relative to water.