Process for the preparation of shaped articles based on acrylic polymers coated with an antiscratch and antiabrasion film

摘要

The invention refers to a process to render antiscratch and antiabrasion shaped articles based on thermoplastic acrylic polymers consisting in coating the article by a composition comprising (A) 55-95% by weight of at least a (meth)acrylic monomer and/or oligomer having at least two double bonds; (B) 5-25% by weight of monomers and/or oligomers of divinylethers and/or epoxides (C) 0-20% by weight of monomers and/or oligomers containing polar groups of monofunctional (meth)acrylaytes and/or monovinylethers, when (A) or (B) do not contain polar groups, and comprising a mixed system of photoinitiators of radical and cationic type, then in submitting the coated article to U.V. irradiation, at temperatures of 30 DEG -70 DEG C. to polymerize and crosslink the coating in situ.