Nippon Sheet Glass Company, Limited

Sumitomo Chemical Company, Limited

Shin-etsu Co., Ltd.

Satoshi Shiiki

Hiroaki Kobayashi

Jun Kawaguchi

Motoaki Yoshida

Toyoyuki Teranishi

Koichi Maeda

Shinichiro Kitayama

Akio Takigawa

Teruho Adachi

Yuichi Aoki

Hisayuki Kayanoki

Masahiro Ueda

Naoya Imamura

Hiroaki Yamamoto

Ichiro Ono

Kazuishi Mitani

Mitsuo Asai

Hitoshi Uehara

Kazuaki Takada

Takashi Itoh

Kazuo Tojima

A sheet of ultraviolet-cutoff glass includes a primer layer, an ultraviolet-cutoff layer, and a water-repellent layer which are successively deposited on a glass sheet. The water-repellent layer is formed of a vitreous water repellent. Since the water-repellent layer doubles as an overcoat layer, it makes it unnecessary to form a overcoat layer in a separate overcoating process.

Water-repellent ultraviolet cutoff glass and heat-cutoff glass

Disclosed is a method for forming a water-repellent film on the surface of a transparent substrate (e.g., sheet glass). While the film on the coated substrate is dried, the temperature is controlled to fall between 15.degree. C. and 25.degree. C., the relative humidity is controlled to be 30% or preferably from 15% to 20%, and the speed of the air stream to be applied to the coated substrate is controlled to be 0.5 m/min or lower. The water-repellent film formed by the invention has a uniform thickness and good abrasion resistance.

Method for forming water-repellent film

A hydrolyzate resulting from co-hydrolysis of a perfluoroalkyl group-containing organic silicon compound and a hydrolyzable group-containing methylpolysiloxane compound in a hydrophilic solvent is blended with an organopolysiloxane and a strong acid to constitute a water repellent composition which is effective for imparting water repellency and facilitating falling of water droplets and thus imparting excellent water repellency and stain-proofness to a surface of an article treated therewith.

Water repellent composition

A light control sheet capable of scattering an incident light of particular incident angle is produced by a method composed of preparing a film of a composition containing at least two photopolymerizable components having different refractive indexes, irradiating on the film a light from a particular direction, and obtaining a cured film of the light control sheet product. Such other light control sheets as capable of scattering a plurality of incident lights each of particular incident angle are obtained by modification of the above-mentioned method.

Light control sheets

Growing community of inventors

Yokohama, Japan

Satoshi Shiiki