The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 15, 2026

Filed:

Mar. 15, 2021
Applicant:

Toho Titanium Co., Ltd., Chigasaki, JP;

Inventors:

Hiroyuki Kono, Chigasaki, JP;

Takaharu Sakemi, Chigasaki, JP;

Toshiya Uozumi, Chigasaki, JP;

Keisuke Goto, Chigasaki, JP;

Assignee:

TOHO TITANIUM CO., LTD., Yokohama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/654 (2006.01); B01J 31/38 (2006.01); C08F 2/06 (2006.01); C08F 4/52 (2006.01); C08F 4/655 (2006.01); C08F 299/02 (2006.01); B01J 31/16 (2006.01); C08F 4/659 (2006.01);
U.S. Cl.
CPC ...
C08F 299/022 (2013.01); C08F 2/06 (2013.01); C08F 4/52 (2013.01); C08F 4/654 (2013.01); C08F 4/655 (2013.01); B01J 31/1616 (2013.01); B01J 31/38 (2013.01); C08F 4/65916 (2013.01); C08F 2810/20 (2013.01); C08F 2810/40 (2013.01);
Abstract

The present invention provides a method for producing a catalyst for polymerization of an olefin, which suppresses a decrease in polymerization activity due to early deactivation of the active site after the catalyst has been formed, exhibits excellent catalyst activity at the time of polymerization of olefins, and can produce polymers of olefins, which are excellent in stereoregularity. The method for producing a catalyst for polymerization of an olefin includes contacting a solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound, and a specific organoaluminum compound (B) represented by the general formula (I), with each other, wherein at least one selected from the solid catalyst component (A) and the organoaluminum compound (B) is previously subjected to contact treatment with a hydrocarbon compound having one or more vinyl groups.


Find Patent Forward Citations

Kono, Hiroyuki. (2026). Method for producing catalyst for polymerization of olefin, catalyst for polymerization of olefin, and method for producing polymer of olefin (U.S. Patent No. 12735525). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12735525

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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