公开(公告)号：US20220017664A1

公开(公告)日：2022-01-20

申请号：US16931971

申请日：2020-07-17

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Toshiya Uozumi ,  Teppei Ishikawa

IPC: C08F110/06

Abstract: A solid catalyst component for polymerization of an olefin having a polymerization activity equivalent to or higher than a solid catalyst component having a phthalic acid ester compound or diether compound as an internal electron-donating compound, and can produce an olefin polymer having excellent bulk density and low content of olefin oligomers. A solid catalyst component for polymerization of an olefin is obtained by: (i) bringing compounds selected from particular phthalic acid ester compounds (A), a magnesium compound and a halogen-containing titanium compound into contact; (ii) bringing the first contact product obtained in step (i) and compounds selected from particular diether compounds (B) into contact, and washing the second contact product; and (iii) obtaining a contact product between the washed second contact product and a halogen-containing titanium compound, washing the contact product, and bringing it into contact with particular phthalic acid ester compounds (A) and a halogen-containing titanium compound.

公开(公告)号：US11225536B1

公开(公告)日：2022-01-18

申请号：US16931971

申请日：2020-07-17

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Toshiya Uozumi ,  Teppei Ishikawa

IPC: C08F110/06

Abstract: A solid catalyst component for polymerization of an olefin having a polymerization activity equivalent to or higher than a solid catalyst component having a phthalic acid ester compound or diether compound as an internal electron-donating compound, and can produce an olefin polymer having excellent bulk density and low content of olefin oligomers. A solid catalyst component for polymerization of an olefin is obtained by: (i) bringing compounds selected from particular phthalic acid ester compounds (A), a magnesium compound and a halogen-containing titanium compound into contact; (ii) bringing the first contact product obtained in step (i) and compounds selected from particular diether compounds (B) into contact, and washing the second contact product; and (iii) obtaining a contact product between the washed second contact product and a halogen-containing titanium compound, washing the contact product, and bringing it into contact with particular phthalic acid ester compounds (A) and a halogen-containing titanium compound.

公开(公告)号：US11912796B2

公开(公告)日：2024-02-27

申请号：US16977599

申请日：2019-01-25

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Toshiya Uozumi ,  Tetsuya Morioka ,  Keiichi Kurosaki ,  Teppei Ishikawa

IPC: C08F210/06 ,  C08F10/06 ,  C08F2/00 ,  C08F4/656 ,  C08F297/08 ,  C08F4/658 ,  C08F4/657

CPC classification number: C08F10/06 ,  C08F210/06 ,  C08F297/08 ,  C08F2/001 ,  C08F4/656 ,  C08F4/657 ,  C08F4/658

Abstract: Provided is a novel olefin polymer which is excellent in lightness and moldability, has high rigidity and yields molded products excellent in flexural elasticity. The olefin polymer includes a propylene initial polymerization product formed in the presence of an olefin polymerization catalyst which is a contact reaction product of an olefin polymerization solid catalyst component containing a titanium atom, a magnesium atom, a halogen atom and an internal electron donating compound, at least one organoaluminum compound selected from the compounds of the general formula (I), and a first external electron donating compound; and a polypropylene part formed of a propylene polymerization product formed in the presence of the olefin polymerization catalyst and a second external electron donating compound higher in adsorption to the surface of the olefin polymerization solid catalyst component than the first external electron donating compound.

公开(公告)号：US11219891B1

公开(公告)日：2022-01-11

申请号：US17084752

申请日：2020-10-30

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Toshiya Uozumi ,  Teppei Ishikawa

IPC: B01J37/04 ,  C08F10/06 ,  B01J35/02

Abstract: A method for manufacturing a solid catalyst component for polymerization of an olefin is disclosed, which includes bringing a magnesium compound and a specific styrene-based compound into contact with each other to obtain a preliminary contact product, and subsequently bringing the preliminary contact product, a titanium halide compound, and an internal electron donor compound into contact with each other to obtain a solid catalyst component for polymerization of an olefin; and a method for manufacturing a catalyst for polymerization of an olefin and a method for manufacturing a polymer of an olefin using the solid catalyst component for polymerization of an olefin obtained by the manufacturing method.

公开(公告)号：US20210040245A1

公开(公告)日：2021-02-11

申请号：US16977599

申请日：2019-01-25

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Toshiya Uozumi ,  Tetsuya Morioka ,  Keiichi Kurosaki ,  Teppei Ishikawa

IPC: C08F10/06 ,  C08F297/08

Abstract: Provided is a novel olefin polymer which is excellent in lightness and moldability, has high rigidity and yields molded products excellent in flexural elasticity. The olefin polymer includes a propylene initial polymerization product formed in the presence of an olefin polymerization catalyst which is a contact reaction product of an olefin polymerization solid catalyst component containing a titanium atom, a magnesium atom, a halogen atom and an internal electron donating compound, at least one organoaluminum compound selected from the compounds of the general formula (I), and a first external electron donating compound; and a polypropylene part formed of a propylene polymerization product formed in the presence of the olefin polymerization catalyst and a second external electron donating compound higher in adsorption to the surface of the olefin polymerization solid catalyst component than the first external electron donating compound.