logo

For the Inventor, By the Inventor

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.

Patent No.:

US 11077434 B1

PDFFull Text
Date of Patent:
Aug. 03, 2021

Filed:

Jul. 07, 2017

Method of preparing metallocene catalyst for polyolefin preparation

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Hee Kwang Park, Daejeon, KR;

Hye Kyung Lee, Daejeon, KR;

Byung Seok Kim, Daejeon, KR;

Jae Youp Cheong, Daejeon, KR;

Sang Jin Jeon, Daejeon, KR;

Assignee:

LG Chem, Ltd.;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Yun Qian

Int. Cl.
CPC ...
C08F 4/76 (2006.01); B01J 31/22 (2006.01); C08F 110/06 (2006.01); B01J 37/03 (2006.01); C08F 4/658 (2006.01); C08F 4/6592 (2006.01); C08F 4/659 (2006.01); C08F 10/06 (2006.01);
U.S. Cl.
CPC ...
B01J 31/2295 (2013.01); B01J 37/031 (2013.01); C08F 4/658 (2013.01); C08F 4/65927 (2013.01); C08F 110/06 (2013.01); B01J 2231/12 (2013.01); B01J 2531/48 (2013.01); C08F 4/65908 (2013.01); C08F 4/65912 (2013.01); C08F 4/65916 (2013.01); C08F 10/06 (2013.01);
Abstract

A method of preparing a high-purity metallocene catalyst capable of providing various selectivities and high activities for polyolefin copolymers, wherein a metallocene compound is formed by reacting a ligand compound with a zirconium compound, and then lithium chloride as a reaction by-product included in the metallocene compound is prepared in a form of a complex compound and effectively removed in a subsequent step of extracting the catalyst, thereby effectively preparing the high-purity metallocene catalyst, is provided.

Find Patent Forward Citations

Park, Hee. (2021). Method of preparing metallocene catalyst for polyolefin preparation (U.S. Patent No. 11077434). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11077434

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

Loading…