VERFAHREN ZUM HERSTELLEN VON KONTAKTLINSEN AUF DER BASIS VON POLYVINYLALKOHOL

摘要

A process for preparing crosslinked polyvinyl alcohol contact lenses through hydrolysis of a copolymer of a vinyl ester with triallyl isocyanurate, which comprises preparing a mixture of 100 parts by weight of the vinyl ester with 0.05 to 5 parts by weight of the triallyl isocyanurate, filling a mold composed of a male mold and a female mold with the mixture, applying ultraviolet ray to form a lens-shaped polymer, and hydrolyzing the resultant polymer. Since this process has a lens-shaped polymer formed without machinery processings, the lens surface is not roughened and the shape stability of the completed lens in a swollen state is so good that the handleability thereof is good and the lens can be mass-prepared with equalized quality.