Patent ID: 9528028
Filing Date: 2016-12-27
CPC Classification: C08G,C09D

Claim Text:
1. A method for preparing a modified silica film, the method comprising: providing a reactive fluorine-containing polymer solution, the reactive fluorine-containing solution including a fluorine-containing solvent and a reactive fluorine-containing polymer including a bonding group bondable to polysilazane, the reactive fluorine-containing polymer being dissolved in the fluorine-containing solvent; providing a polysilazane solution, the polysilazane solution including a polysilazane and a solvent for polysilazane, the solvent for polysilazane being immiscible with the fluorine-containing solvent and exhibiting a higher surface tension than the reactive fluorine-containing polymer and a higher surface tension than the fluorine-containing solvent, the polysilazane being dissolved in the solvent for polysilazane; preparing a coating liquid by mixing the polysilazane solution with the reactive fluorine-containing polymer solution; forming a coating layer by coating the coating liquid onto a substrate; removing the solvent for polysilazane and the fluorine-containing solvent from the coating layer; and converting the polysilazane into silica while bonding the bonding group of the reactive fluorine-containing polymer to the polysilazane.