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. 28, 2024
Filed:
Dec. 16, 2021
Applicant:
W.r. Grace & Co.-conn., Columbia, MD (US);
Inventors:
Linfeng Chen, Missouri City, TX (US);
Tak W. Leung, Houston, TX (US);
Tao Tao, Houston, TX (US);
Kuanqiang Gao, Pearland, TX (US);
Assignee:
W.R. Grace & Co.-Conn., Columbia, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/64 (2006.01); C08F 4/00 (2006.01); C08F 4/16 (2006.01); C08F 4/60 (2006.01); C08F 110/06 (2006.01); C08F 4/609 (2006.01); C08F 4/642 (2006.01);
U.S. Cl.
CPC ...
C08F 4/00 (2013.01); C08F 4/16 (2013.01); C08F 110/06 (2013.01); C08F 4/6094 (2013.01); C08F 4/6421 (2013.01); C08F 4/6425 (2013.01); C08F 4/6426 (2013.01);
Abstract
Disclosed are catalyst compositions having an internal electron donor which includes a 3,6-di-substituted-1,2-phenylene aromatic diester. Ziegler-Natta catalyst compositions containing the present catalyst compositions exhibit very high hydrogen response, high activity, high selectivity and produce propylene-based olefins with high melt flow rate.