Surface hardner for nylon lens

摘要

A surface hardner for nylon lens comprising (a) a polyfunctional acrylic ester monomer, (b) a photoinitiator, and (c) a diluent, said photoinitiator consisting of a combination of a hydrogen abstraction type photoinitiator and an alpha -cleavage type photoinitiator, and optionally a silane compound containing at least one polymerizable unsaturated bond. Said surface hardner is effective for giving the nylon lens excellent impact resistance and wear resistance, and when the silane compound is incorporated, it can give also an excellent adhesion between the hardner layer and nylon lens.