Patent ID: 8211993
Filing Date: 2012-07-03
Classification: C23C,H01L

Abstract:
1. A method of manufacturing an inorganic substrate having a thin silica type glass layer of 2H to 9H pencil hardness, said method comprising the following first step (1) and second step (2); (1) coating an inorganic substrate with (A) a cyclic dihydrogenpolysiloxane that is liquid at ambient temperature, has a weight-average molecular weight within the range of 1500 to 1,000,000, and is composed of H (2) curing the coated cyclic dihydrogenpolysiloxane (A), the coated hydrogenpolysiloxane (B), or the coated mixture of the cyclic dihydrogenpolysiloxane (A) and the hydrogenpolysiloxane (B) to form a thin silica type glass layer of 2H to 9H pencil hardness.