A process for preparing a multicomponent system curable thermally and with actinic
radiation (dual cure), where
(A) at least one component comprising at least one constituent (A1) containing
per molecule at least two isocyanate-reactive functional groups, and
(B) one component containing one polyisocyanate (B1), are mixed with one
another, which comprises mixing component (A) and/or component (B), shortly before
their mixing, with one further liquid component (C) comprising
(C1) one constituent which is curable with actinic radiation and contains
per molecule at least two functional groups which contain bond which can be activated
with actinic radiation, and/or
(C2) one constituent which is curable thermally and with actinic radiation
and contains per molecule at least one functional group which contains at least
one bond which can be activated with actinic radiation, and containing per molecule
at least one isocyanate-reactive functional group or containing at least one isocyanate
group, and subsequently mixing and homogenizing components (A/C) and (B), (A) and
(B/C) or (A/C) and (B/C).
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