Kratz, Quintos & Hanson, LLP
Method for producing polycarbonate material having excellent solubility and affinity, and contact lens material comprising the same
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, as well as a contact lens gel material having excellent oxygen permeability and transparency can be provided. The present invention relates to a contact lens material comprising a polycarbonate resin derived from at least two compounds among compounds represented by a general formula (A), a general formula (B) and a general formula (C), a highly polar molecular weight control modifier (chain terminator) and a compound forming a carbonic acid ester, wherein the compound of the general formula (A) is essentially comprised, and to a production method thereof.
Shin-Etsu Chemical Co., Ltd. Mitsubishi Gas Chemical Company, Inc. Menicon Co., Ltd.
G C
G02B C08G
inventional inventional
Yasuhiko Kazuhiko Takahiro Mamoru Tsuyoshi Masahiko
Suzuki Nakada Adachi Hagiwara Watanabe Minemura