PREPARATION OF COPOLYMER CROSSLINKABLE BY IRRADIATION WITH ULTRAVIOLET RAYS UNDER ATMOSPHERE OF OXYGEN IN THE AIR

摘要

A process for the preparation of copolymers which can be crosslinked by ultra-violet radiation in an atmospheric oxygen atmosphere is characterised in that a mixture of (A) from 80 to 99.9% by weight of olefinically unsaturated monomers, (B) from 0 to 10% by weight of a copolymerisable olefinically unsaturated, photoreactive compound which is capable of hydrogen abstraction in the UV-excited state, and (C) from 0 to 10% by weight of a polymerisation-regulating, photoreactive compound which is capable of hydrogen abstraction in the excited state is subjected to free-radical polymerisation, where the sum of (B) and (C) is at least 0.1% by weight and the stated percentages by weight are based on the sum of the weights of (A) + (B) + (C).