A blend of a softer continuous phase polymer reinforced with harder acrylic star polymer particles having reactive functional groups with crosslinking ability built in or provided by a third polymer. The harder polymer has a Tg at least 10°C above that of the softer polymer, and the acrylic star polymer is preferably made by group transfer polymerization. This blend provides coating compositions, films and bulk polymer with enhanced toughness and flexibility.
一种较软的连续相聚合物与较硬的
丙烯酸星型聚合物颗粒的混合物,后者具有活性官能团,内含或由第三种聚合物提供交联能力。 较硬的聚合物的 Tg 至少比较软的聚合物高 10°C,
丙烯酸星型聚合物最好通过基团转移聚合制成。 这种混合物可提供韧性和柔韧性更强的涂料组合物、薄膜和散装聚合物。