Coating materials curable thermally and with actinic radiation, comprising
(A) at least one binder containing isocyanate-reactive functional groups and
(B) a crosslinking component comprising
(i) free and/or blocked isocyanate groups,
(ii) reactive functional groups containing at least one bond which can be activated with actinic radiation,
(iii) flexibilizing segments which as part of three-dimensional networks lower their glass transition temperature Tg, and
(iv) hardening segments which as part of three-dimensional networks raise their glass transition temperature Tg;
with the proviso that the crosslinking component (B) comprises or consists of at least one constituent which has the features (i) and (ii);
processes for their preparation, and their use.
可通过热固化和光辐射固化的涂层材料,包括
(A) 至少一种含有
异氰酸酯反应官能团的粘合剂和
(B) 交联组分,包括
(i) 游离和/或封端
异氰酸酯基团、
(ii) 反应性官能团,其中至少含有一个可被光辐射活化的键、
(iii) 柔化段,作为三维网络的一部分,可降低其
玻璃化转变温度 Tg,和
(iv) 硬化段,作为三维网络的一部分,可提高其
玻璃化转变温度 Tg;
但交联组分(B)至少包括一种具有(i)和(ii)特征的成分;
其制备工艺及其用途。