Mixture of substances of thermal hardening and actinic radiation (mixture of substances of dual hardening) containing: A) at least one constituent that has per molecule, on a statistical average, at least one group of primary or secondary carbamate and at least one bond which can be activated by actinic radiation, and can be prepared 1. according to a first variant 1.1 in a first process step the reaction of at least one polyfunctional compound occurs with at least two isocyanate reagents, acid or epoxide reagents, each with at least one compound having an isocyanate, acid or epoxide group as well as at least one bond that can be activated by actinic radiation, after which, in a second process step, a reaction of the resulting intermediate occurs, which has On average, at least one functional group reactive against isocyanate, against acid or against epoxide, with, in each case, at least one compound by which carbamate groups are introduced, or 1.2 in a first process step a reaction of at least one polyfunctional compound occurs with at least two functional groups reactive against isocyanate, against acid or against epoxide , each, with at least one compound by which the carbamate groups are introduced, after which, in a second process step, the reaction of the resulting intermediate product occurs, which still contains at least one functional group on a statistical average free reactant against isocyanate, against acid or against epoxide, with, in each case, at least one compound having an isocyanate, acid or epoxide group as well as at least one bond that can be activated by actinic radiation.
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