Patent ID: 8466229
Filing Date: 2013-06-18
Classification: C08K

Abstract:
1. A method of producing a composition for forming a silica-based film, the method comprising: a step of obtaining a solution by dissolving a compound represented by the following general formula (1) in an aprotic solvent: wherein R a step of obtaining a polysiloxane solution by hydrolyzing and condensing the compound after adding an inorganic acid catalyst to the solution; a step of removing a solvent in the polysiloxane solution so that the final composition for forming a silica-based film contains said aprotic solvent in an amount of at least 90% by mass to the total amount of the solvent, and a step of combining an onium salt with the polysiloxane solution after the removing step, wherein the content of the onium salt is 0.001 mass ppm to 0.5 mass % based on the total weight of the composition for forming a silica-based film.