Patent ID: 10920075

Abstract:
A polymerizable monomer compound is disclosed, which can produce a polymer having advantageous transparency and high oxygen permeability for use as an ophthalmic device, while exhibiting sufficient resistance to hydrolysis. A silicone compound of the following formula (1) is described: where the residue R1R2R3Si— has a steric parameter value of −1.00 or less, the parameter indicating the steric bulkiness of the unsubstituted hydrocarbon groups bonded to the silicon atom, and in a case where at least one of R1, R2 and R3 is a substituted hydrocarbon group, the steric parameter value of the residue in which each of the functional group and halogen atom bonded to the carbon atom of the substituted hydrocarbon group is supposed to be substituted with a hydrogen atom is −1.00 or less. Methods for producing the monomer compound, and methods for preparing the silicone compound are also described.