An abrasion resistant coating for a substrate, particularly a transparent polymeric substrate or a metallic substrate, includes a cured inorganic/organic hybrid network material formed by a sol-gel co-condensation of at least one metal alkoxide and a silane-functionalized organic compound, wherein the...http://www.google.es/patents/US6072018?utm_source=gb-gplus-sharePatente US6072018 - High abrasion resistant coating material
