公开(公告)号：US5051484A

公开(公告)日：1991-09-24

申请号：US445792

申请日：1989-12-04

申请人： Toshio Sasaki ,  Takeshi Ebara ,  Hiroyuki Kora ,  Kiyoshi Kawai ,  Mituharu Yamasaki ,  Syozo Kawamata

发明人： Toshio Sasaki ,  Takeshi Ebara ,  Hiroyuki Kora ,  Kiyoshi Kawai ,  Mituharu Yamasaki ,  Syozo Kawamata

IPC分类号： C08F2/34 ,  C08F4/64 ,  C08F10/00

CPC分类号： C08F10/00 ,  Y10S526/901 ,  Y10S526/904 ,  Y10S526/908

摘要： A solid catalyst component for .alpha.-olefin polymerization containing as catalyst components at least titanium, magnesium and chlorine which are impregnated into an organic porous polymer carrier having a mean particle diameter of 5 to 1,000 .mu.m and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 .ANG., a catalyst system comprising at least said solid catalyst component (A) and an organoaluminum compound (B), as well as a process for producing .alpha.-olefin polymers using said catalyst system.

公开(公告)号：US4900706A

公开(公告)日：1990-02-13

申请号：US167003

申请日：1988-03-11

申请人： Toshio Sasaki ,  Takeshi Ebara ,  Hiroyuki Kora ,  Kiyoshi Kawai ,  Mituharu Yamasaki ,  Syozo Kawamata

发明人： Toshio Sasaki ,  Takeshi Ebara ,  Hiroyuki Kora ,  Kiyoshi Kawai ,  Mituharu Yamasaki ,  Syozo Kawamata

IPC分类号： C08F2/34 ,  C08F4/64 ,  C08F10/00

CPC分类号： C08F10/00 ,  Y10S526/901 ,  Y10S526/904 ,  Y10S526/908

摘要： A solid catalyst component for .alpha.-olefin polymerization containing as catalyst components at least titanium, magnesium and chlorine which are impregnated into an organic porous polymer carrier having a mean particle diameter of 5 to 1,000 .mu.m and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 .ANG., a catalyst system comprising at least said solid catalyst component (A) and an organoaluminum compound (B), as well as a process for producing .alpha.-olefin polymers using said catalyst system.

公开(公告)号：US4820775A

公开(公告)日：1989-04-11

申请号：US866369

申请日：1986-05-23

申请人： Akinobu Shiga ,  Masahiro Kakugo ,  Hajime Sadatoshi ,  Hiroyuki Kora ,  Toshio Sasaki ,  Junpei Kojima ,  Kazuki Wakamatsu ,  Syozo Kawamata

发明人： Akinobu Shiga ,  Masahiro Kakugo ,  Hajime Sadatoshi ,  Hiroyuki Kora ,  Toshio Sasaki ,  Junpei Kojima ,  Kazuki Wakamatsu ,  Syozo Kawamata

IPC分类号： C08F297/00 ,  C08F4/16 ,  C08F4/52 ,  C08F297/08

CPC分类号： C08F297/083

摘要： A process for the production of .alpha.-olefin block copolymer particles having excellent impact resistance at low temperature and excellent molding and processing characteristics, is disclosed. The process includes a two step gas phase polymerization procedure under specific conditions in the presence of a specific catalyst system.

摘要翻译： 公开了一种在低温下具有优异的耐冲击性和优异的成型加工特性的α-烯烃嵌段共聚物颗粒的制备方法。 该方法包括在特定催化剂体系存在下的特定条件下的两步气相聚合方法。