Provided is a process for manufacturing an insulating film for a semiconductor device. The process includes preparing a composition for forming an insulating film, wherein the composition comprises a) an organosilicate polymer and b) an organic solvent. The composition is coated on a substrate of a semiconductor device to prepare a coated insulating film, and the coated insulated film is dried and cured. Also provided are an insulating film prepared as described as well as a semiconductor device comprising the insulating film.