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.:
Date of Patent:
Oct. 05, 2021
Filed:
Sep. 10, 2019
Beijing Lihe Technology Ltd, Beijing, CN;
Zhiwu Wang, Beijing, CN;
Shuhang Li, Beijing, CN;
Huashu Li, Beijing, CN;
Junwei Zhang, Beijing, CN;
Le Hu, Beijing, CN;
Jinsong Dai, Beijing, CN;
Qingli Ma, Beijing, CN;
Yong Gao, Beijing, CN;
Hao Chen, Beijing, CN;
Wenjie Jiao, Beijing, CN;
BEIJING LIHE TECHNOLOGY LTD, Beijing, CN;
Abstract
Provided in the present invention is a solid catalyst component for use in olefin polymerisation, comprising Mg, Ti, a halogen, and at least one electron donor, the electron donor being a 2-substituted amino-phenyl ester compound selected from general formula (I). Also disclosed in the present invention are a catalyst comprising the solid catalyst component, and an application for the catalyst in olefin polymerisation, particularly in propylene polymerization. Also provided in the present invention is a high activity catalyst, said catalyst being able to obtain polypropylene of high isotacticity and wide molecular weight distribution, and not requiring an external electron donor to obtain high isotacticity polypropylene; during polymerization, Al/Ti and Al/Si are reduced, the polymerization time is lengthened, and high activity can still be maintained, suitable for producing low-ash polymers.