Kratz, Quintos and Hanson, LLP
Contact lens material
According to the present invention, a contact lens material being excellent in oxygen permeability and transparency, being capable of undergoing injection molding, having no water content and having flexibility is provided. The present invention also relates to a contact lens gel material having excellent oxygen permeability and transparency. Particularly, the present invention relates to a contact lens material comprising a polycarbonate resin derived from a bisphenol compound (A), a polysiloxane-substituted bisphenol compound (B) and a compound forming a carbonic acid ester.
Menicon Co., Ltd. Mitsubishi Gas Chemical Company, Inc. Shin-Etsu Chemical Co., Ltd.
C G
C08G G02B
inventional inventional
Mamoru Takahiro Tsuyoshi Masahiko Yasuhiko Kazuhiko
Hagiwara Adachi Watanabe Minemura Suzuki Nakada