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. 13, 2015
Filed:
Apr. 22, 2011
Mingzhi Gao, Beijing, CN;
Changxiu LI, Beijing, CN;
Haitao Liu, Beijing, CN;
Xiaofan Zhang, Beijing, CN;
Jianhua Chen, Beijing, CN;
Jing MA, Beijing, CN;
Xiaoxia Cai, Beijing, CN;
Xianzhong LI, Beijing, CN;
Jixing MA, Beijing, CN;
Mingzhi Gao, Beijing, CN;
Changxiu Li, Beijing, CN;
Haitao Liu, Beijing, CN;
Xiaofan Zhang, Beijing, CN;
Jianhua Chen, Beijing, CN;
Jing Ma, Beijing, CN;
Xiaoxia Cai, Beijing, CN;
Xianzhong Li, Beijing, CN;
Jixing Ma, Beijing, CN;
Abstract
A catalyst component for olefin polymerization comprising magnesium, titanium, halogen and electron donor, wherein the electron donor is selected from at least one of the diol diester compounds, when the diol diester comprised contains a certain amount of isomer with Fischer projection formula as shown in Formula (II), the activity and stereospecificity of the catalyst are greatly improved, especially in the production of polymers with high melt index, the isotactic index of the obtained polymers is improved substantially.