A blend activatable with actinic radiation and solid at room temperature, comprising
(A) at least one crystalline compound containing on average per molecule at least
one reactive functional group having at least one bond which can be activated with
actinic radiation, and (B) at least one amorphous compound containing on average
per molecule at least one reactive functional group having at least one bond which
can be activated with actinic radiation; process for its preparation, and its use.