Patent ID: 7396568
Filing Date: 2008-07-08
Classification: C08J

Abstract:
1. A method of maintaining or promoting the hydrophilicity of a polysilazane-containing coating film, which comprises steps of: preparing an undiluted solution of a hydrophilicity maintaining or promoting agent for a polysilazane-containing coating film, wherein said undiluted solution is an aqueous solution with pH in the range of from 4.5 to 7.0, wherein said solution comprises 5 to 25% by weight of an anionic surfactant, 0.5 to 20% by weight of an amphoteric surfactant, 4 to 6% by weight of a nonionic surfactant and, optionally, an antiseptic; diluting the undiluted solution with water; and applying the dilute solution onto a polysilazane-containing coating film.