Syndiotactic polystyrene ( sPS ) produced with metallocene catalyst is a novel crystalline polymer that possesses excellent electronic / electric properties and good abilities to resist heat and chemicals .

用茂金属催化剂制 得间 规聚苯乙烯（sPS）是一类新型结晶 聚合物，具有优良的耐热性、耐化学性和电气性能。

It was concluded from the experiment that the content of the isotactic polymer was the lest the syndiotactic polymer was the most and the atactic polymer was between them .

由实验得到以下主要结论：PA-18降凝剂结构中全同立构聚合物含量最少， 间 同 立 构 聚合物含量最多，无规立构聚合物含量介于两者之间。