高效载体Ziegler-Nata催化剂用于丙烯与受阻哌啶烯类单体的共聚合研究

Study of Copolymerization of Propene and Hindered Piperidine Monomerswith a Highly Efficient Supported ZieglerNatta Catalyst

以ω－溴代－１－烯和受阻哌啶醇为原料合成了四种醚型受阻哌啶单体。用高效载体Ｚｉｅｇｌｅｒ－Ｎａｔａ催化剂进行了丙烯与这些单体的共聚合，研究了受阻哌啶单体的结构、浓度、预络合等条件对共聚合活性的影响规律。共聚物显示了优异的耐溶剂抽提性和良好的光稳定性。

our-ether-type hindered piperidine monomers:4-allyloxy-2,2,6,6-tetramethylpiperidine,4-allyloxy-1,2,2,6,6-pentamethylpiperidine,4-allyloxy-1-benzyl-2,2,6,6-tetramethylpiperidine and 4-(hex-5-enyloxy)-2,2,6,6-tetramethylpiperidine were synthesized from ωbromo1alkene and corresponding hindered piperidinolsThe copolymerization of propene and these piperidine monomers were carried out with a highly efficient supported ZieglerNatta catalystThe catalytic activity of the copolymerization was influenced by the chemical structure,concentration and precomplexation of the hindered piperidine monomersThe copolymers exibit excellent extractionresistance and 2～4 times higher light stability than that of pure polypropene