The present invention provides a nucleator composition comprising sorbitol acetal, sorbitol diacetal, and sorbitol triacetal. The nucleator composition can improve the nucleation performance of a polymer, increase transparency, glossiness, flexural modulus and tensile strength of polymer films, polymer sheets and polymer molding articles, and increase heat distortion temperature and dimensional stability of polymer articles.
本发明提供了一种由
山梨醇缩醛、
山梨醇二
缩醛和
山梨醇三
缩醛组成的成核剂组合物。这种成核剂组合物可以改善聚合物的成核性能,提高聚合物薄膜、聚合物片材和聚合物成型品的透明度、光泽度、弯曲模量和拉伸强度,并提高聚合物成型品的热变形温度和尺寸稳定性。