- Patent Title: Method for producing solid catalyst component for olefin polymerization, olefin polymerization catalyst, method for producing olefin polymerization catalyst, and method for producing olefin polymer
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Application No.: US15846789Application Date: 2017-12-19
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Publication No.: US10590211B2Publication Date: 2020-03-17
- Inventor: Motoki Hosaka , Toshihiko Sugano , Tsutomu Uzawa
- Applicant: TOHO TITANIUM CO., LTD.
- Applicant Address: JP Chigasaki-shi
- Assignee: TOHO TITANIUM CO., LTD.
- Current Assignee: TOHO TITANIUM CO., LTD.
- Current Assignee Address: JP Chigasaki-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Main IPC: C08F110/06
- IPC: C08F110/06

Abstract:
A method for producing a solid catalyst component includes bringing a magnesium compound, a titanium halide compound, and one or more internal electron donor compounds into contact with each other to effect a reaction; washing the resulting product with a first inert organic wash solvent that does not have reactivity with the titanium halide compound, and has a solubility parameter (SP) of 8.0 to 9.0; washing the resulting intermediate product in the absence of the titanium halide compound with a second inert organic wash solvent that includes a hydrocarbon compound and does not have reactivity with the titanium halide compound, but has a solubility parameter (SP) of more than 9.0; and washing the resulting product in the absence of the titanium halide compound with a third inert organic wash solvent that does not have reactivity with the titanium halide compound, and has a solubility parameter (SP) of less than 8.0.
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