Patent ID: 7901609
Filing Date: 2011-03-08
Classification: B82Y,C01B,C01F,C01G,C01P,C09C,C23C

Abstract:
1. A process for the preparation of a plane-parallel structure comprising at least one dielectric layer consisting of oxides of one or more metal selected from groups 3 to 15 of the periodic table, which process comprises: (b) applying a composition comprising one or more precursors of one or more desired metal oxides and an acid catalyst, wherein the precursor of the desired metal oxide is a metal acid ester, directly to a substrate with no layer of release material, (c) subjecting the one or more precursors of one or more desired metal oxides to microwave radiation to form a metal oxide layer on the substrate; and (d) separating the resulting metal oxide layer from the substrate as plane-parallel structures, wherein the acid catalyst is poly(4-styrenesulfonic acid) and the metal acid ester is selected from the group consisting of aryl alcoholates, carboxylates, carboxyl-radical alcoholates, alkyl-radical alcoholates and aryl-radical-substituted alkyl alcoholates of aluminum, boron, silicon, tin and zirconium.