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:
May. 06, 2014
Filed:
Jun. 03, 2011
Jianjun Yi, Beijing, CN;
Chunming Cui, Beijing, CN;
Huashu LI, Beijing, CN;
Zhifei LI, Beijing, CN;
Baozuo Yin, Beijing, CN;
Liang Cui, Beijing, CN;
Jianying Zhang, Beijing, CN;
Liang Wang, Beijing, CN;
Jianjun Yi, Beijing, CN;
Chunming Cui, Beijing, CN;
Huashu Li, Beijing, CN;
Zhifei Li, Beijing, CN;
Baozuo Yin, Beijing, CN;
Liang Cui, Beijing, CN;
Jianying Zhang, Beijing, CN;
Liang Wang, Beijing, CN;
PetroChina Company Limited, , CN;
Abstract
An olefin polymerization catalyst and preparation method and use thereof are provided. The components of the catalyst comprise an active magnesium halide, a titanium compound containing at least one Ti-halide bond loaded on the active magnesium halide, and an internal electron donor selected from one or more silicon esters compounds having formula (I). The method for preparing the catalyst components is that: adding spherical magnesium chloride alcoholate particles and the electron donor into the solution of titanium compound in sequence, and processing with the titanium compound for one or more times to obtain the catalyst. The catalyst system used for the olefin polymerization comprises the catalyst components, a cocatalyst and an external electron donor. The catalyst has high activity for the propylene polymerization, and the activity is 4399 gPP/gTi·h(50° C., 1 h, slurry polymerization at atmospheric pressure), and the isotacticity of the polymer is 98%.