公开(公告)号：US5275993A

公开(公告)日：1994-01-04

申请号：US903963

申请日：1992-06-26

申请人： Takashi Fujita ,  Kazuyo Kitagawa

发明人： Takashi Fujita ,  Kazuyo Kitagawa

IPC分类号： C08F4/60 ,  C08F4/649 ,  C08F4/654 ,  C08F8/00 ,  C08F10/00 ,  C08F297/08

CPC分类号： C08F297/086 ,  C08F10/00 ,  C08F297/083 ,  Y10S526/904

摘要： An olefin polymerization catalyst which is obtained by contacting the following components (A) and (B): component (A): a product of contacting the following components (A.sub.1) and (A.sub.2):component (A.sub.1): polyolefin powder having specific values of pore diameter, pore volume, average pore diameter and average particle diameter,component (A.sub.2): a solid component for a Ziegler catalyst comprising titanium, magnesium and a halogen as the essential components;component (B): an organoaluminum compound.The supporting state of the catalyst is improved, and a contaminant-free polymer having a satisfactorily large particle diameter without the lowering of the activity or the stereoregularity of the catalyst is successfully obtained.

摘要翻译： 通过使以下组分（A）和（B）接触获得的烯烃聚合催化剂：组分（A）：与下列组分（A1）和（A2）接触的产物：组分（A1）：具有特定值的聚烯烃粉末 的孔径，孔体积，平均孔径和平均粒径，组分（A2）：包含钛，镁和卤素作为必要组分的齐格勒催化剂的固体组分; 组分（B）：有机铝化合物。 催化剂的支持状态得到改善，并且成功地获得了不降低催化剂的活性或立构规整性的具有令人满意的大粒径的无污染物的聚合物。