通过丙烯与含大基团保护的氨基的α-烯烃的直接共聚反应,合成了一系列具有高分子量和令人满意的功能性共聚单体掺入的新型含氨基等规聚丙烯。高效的后茂金属催化剂体系(pyridylamido)Hf / [Ph 3 C] [B(C 6 F 5)4 ] / Al i Bu 3,与氨基烯烃部分相比,对α-烯烃的反应性极好,有效地促进了共聚丙烯与5-(N,N-二异丙氨基)-1-戊烯,5-(N,N-二苯基氨基)-1-戊烯和4-(7-辛烯-1-基)-N,N-二苯基苯胺分别在温和的反应条件下实现了很高的催化活性(高达7.44×10 6 g聚合物mol Cat。–1 h –1)。证明所获得的功能共聚物显示出高分子量(至多5.90×10 5),氨基烯烃共聚单体的掺入(至多11.6mol%)和立构规整度([mmmm]> 99%)。此外,大多数共聚物表现出高熔点和热稳定性(T d在450°C左右)。代表性物理性能,如U
SUPPORTED METALLOCENE CATALYST, PROCESS FOR PREPARING THE SAME, AND PROCESS FOR PRODUCING OLEFIN POLYMERS
申请人:CHISSO CORPORATION
公开号:EP1026177A1
公开(公告)日:2000-08-09
A supported metallocene catalyst comprising solid fine particles which comprise a reaction product of a metallocene compound and aluminoxane supported on the finely particulate inorganic support, said solid fine particles being produced by carrying out in order the following steps of:
(a) reacting a metallocene compound with an aluminoxane in an aromatic hydrocarbon solvent to form a reaction product,
(b) contacting the reaction product with a finely particulate inorganic support at a temperature of 85 to 150°C in the presence of any aromatic hydrocarbon solvent to form a solid product, and
(c) washing the solid product with an aliphatic hydrocarbon solvent at a temperature of -50°C to +30°C.