Showa Highpolymer Co., Ltd.

Showa Denko Kabushiki Kaisha

Taisei Corporation

Yasushi Morohashi

Eiichiro Takiyama

Kenji Sugimoto

Toshiaki Hanyuda

Haruo Yoshida

Hirotaka Tagoshi

Yasuji Komatsu

Tohei Horishima

Toshiaki Tanikoshi

Polymerizable compositions capable of giving transparent resin having a high refractive index of at least 1.57 which are useful as optical materials and glass adhesives are disclosed. The compositions comprise a mono(meth)acrylate having a biphenyl skeleton and a di(meth)acrylate having a biphenyl skeleton or a bisphenol skeleton. The compositions cure rapidly, particularly under irradiation of ultraviolet light.

Biphenyloxy mono- and dimethacrylate polymerizable compositions

This invention relates to a method for improving surface properties of a porous inorganic material, which comprises coating said material with an infiltratable photopolymerizable paint containing unsaturated spiroacetal resin as one or more layers in environmental atmosphere to infiltrate said paint into said material and then exposing the resultant material to ultraviolet radiation.

Method for improving surface properties of porous inorganic material by

Growing community of inventors

Tokyo, Japan

Yasushi Morohashi