MIXTURE WHICH CAN BE THERMALLY HARDENED AND HARDENED BY ACTINIC RADIATION AND USE THEREOF

摘要

A mixture which can be thermally hardened and hardened by actinic radiation, containing (A) a bonding agent which is devoid of carbon-carbon dual bonds which can be activated with actinic radiation, containing at least one (meth)acrylate copolymer having on a statistical average at least one isocyanate-reactive functional group in a molecule and a glass transition temperature Tg of -40 to +80 ~C, (B) at least one blocked and/or unblocked polyisocyanate having at least one soft, flexibilizing segment which, as a component of three-dimensional polymer networks, lowers the glass transition temperature Tg thereof, and (C) at least one unsaturated polyfunctional urethane which is devoid of isocyanate-reactive functional groups and which contains, on a statistical average, more than four carbon-carbon dual bonds which can be activated by means of actinic radiation and at least one indurating segment in a molecule, said indurating segment raising the glass transition temperature Tg as a component of three-dimensional polymer networks. The invention also relates to a method for the production and use thereof.