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:
Nov. 05, 2013
Filed:
Jun. 28, 2012
Applicants:
Yiqun Fang, Port Lavaca, TX (US);
Demin Xu, Port Lavaca, TX (US);
Ming-yung Lee, Port Lavaca, TX (US);
Inventors:
Yiqun Fang, Port Lavaca, TX (US);
Demin Xu, Port Lavaca, TX (US);
Ming-Yung Lee, Port Lavaca, TX (US);
Assignee:
Formosa Plastics Corporation, U.S.A., Livingston, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 4/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
Heterocyclic organic compounds are used as electron donors in conjunction with solid Ziegler-Natta type catalyst in processes in which polyolefins such as polypropylene are produced. The electron donors may be used in the preparation of solid catalyst system, thus serving as 'internal electron donors', or they may be employed during or prior to polymerization with the co-catalyst as 'external electron donors'.