This invention describes UV-stabilized step growth polymers such as polyesters, polyurethanes, polycarbonates, and combinations thereof. The UV-stabilizing moieties present in these polymers comprise chemically bound, pendant ortho-hydroxydiphenyl ketone based moieties. The polymers are especially useful as protective films and fibers which are highly resistant to ultraviolet (UV) and sunlight degradation.
本发明描述了紫外线稳定阶跃生长聚合物,如聚酯、聚
氨酯、聚
碳酸酯及其组合。这些聚合物中的紫外线稳定分子包括
化学结合的、基于邻羟基二苯酮的悬垂分子。这些聚合物特别适合用作保护膜和纤维,具有很强的抗紫外线(UV)和阳光降解能力。