公开(公告)号：US20190112408A1

公开(公告)日：2019-04-18

申请号：US16213349

申请日：2018-12-07

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Masafumi Imai ,  Toshihiko Sugano ,  Toshiya Uozumi ,  Yuta Haga

IPC: C08F297/08 ,  C08F210/06 ,  C08F4/654 ,  C08F297/06

Abstract: A method for producing a propylene-based block copolymer produces a propylene-based copolymer that exhibits excellent stereoregularity, rigidity, and impact resistance in a convenient and efficient manner while achieving high polymerization activity. The method for producing a propylene-based block copolymer includes bringing a catalyst into contact with propylene, or propylene and an α-olefin, and bringing an electron donor compound into contact with the resulting product to produce a propylene-based block copolymer, the catalyst including a solid catalyst component that includes titanium, magnesium, a halogen, and an internal electron donor compound, a specific organoaluminum compound, and a specific external electron donor compound.

公开(公告)号：US10479856B2

公开(公告)日：2019-11-19

申请号：US16213349

申请日：2018-12-07

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Masafumi Imai ,  Toshihiko Sugano ,  Toshiya Uozumi ,  Yuta Haga

IPC: C08F297/06 ,  C08F4/654 ,  C08F297/08 ,  C08F210/06

Abstract: A method for producing a propylene-based block copolymer produces a propylene-based copolymer that exhibits excellent stereoregularity, rigidity, and impact resistance in a convenient and efficient manner while achieving high polymerization activity. The method for producing a propylene-based block copolymer includes bringing a catalyst into contact with propylene, or propylene and an α-olefin, and bringing an electron donor compound into contact with the resulting product to produce a propylene-based block copolymer, the catalyst including a solid catalyst component that includes titanium, magnesium, a halogen, and an internal electron donor compound, a specific organoaluminum compound, and a specific external electron donor compound.

公开(公告)号：US20170240682A1

公开(公告)日：2017-08-24

申请号：US15504482

申请日：2015-08-14

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Masafumi Imai ,  Toshihiko Sugano ,  Toshiya Uozumi ,  Yuta Haga

IPC: C08F297/08

CPC classification number: C08F297/083 ,  C08F4/654 ,  C08F210/06 ,  C08F297/06 ,  C08F4/651 ,  C08F4/6492 ,  C08F4/6494 ,  C08F4/6465 ,  C08F4/6545 ,  C08F210/16 ,  C08F2/001

Abstract: A method for producing a propylene-based block copolymer produces a propylene-based copolymer that exhibits excellent stereoregularity, rigidity, and impact resistance in a convenient and efficient manner while achieving high polymerization activity. The method for producing a propylene-based block copolymer includes bringing a catalyst into contact with propylene, or propylene and an α-olefin, and bringing an electron donor compound into contact with the resulting product to produce a propylene-based block copolymer, the catalyst including a solid catalyst component that includes titanium, magnesium, a halogen, and an internal electron donor compound, a specific organoaluminum compound, and a specific external electron donor compound.