Method for manufacturing 2-hydroxyethyl methacrylate hydrogel and functional soft contact lens

摘要

A method for producing a polymer by radical polymerization of 2-hydroxyethyl methacrylate or a monomer mixture thereof containing a halogen compound. A method for producing a hydrogel in which the polymer is water-imparting. A method for producing a hydrous soft contact lens, wherein the polymer is molded into a contact lens shape, and then water-treated. Treatment is carried out using at least a halogen compound of the molding surface of the mold having an empty hole formed in the forming surface of the contact lens shape, and then radical polymerization of 2-hydroxyethyl methacrylate or a monomer mixture thereof in the empty hole. The manufacturing method of the polymer. The manufacturing method of the water soft contact lens which hydrolyzes this polymer. ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the water-containing soft contact lens excellent in heat resistance using high purity 2-hydroxyethyl methacrylate, and also to provide the manufacturing method of the intermediate.