CROSSLINKED RESIN-COATED FINE SILICA PARTICLES AND PROCESS FOR PRODUCING THE SAME

摘要

The present invention relates to crosslinked resin-coated silica fine particles each of which has a crosslinked resin coating formed of a structure of a single layer or a plurality of layers formed on the surface of each calcined silica fine particle through a vinyl-containing silane coupling agent, and the crosslinked resin-coated silica fine particles of the present invention have characteristic features in that the peeling of the resin coatings substantially do not occur when they are dispersed in a dispersing medium with ultrasonic vibration, and that they substantially do not move after the formation of a liquid crystal cell and substantially do not affect a liquid crystal itself and its orientation when used as a spacer for a liquid crystal display device.