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:
Apr. 19, 2016
Filed:
Apr. 01, 2013
Applicant:
W.r. Grace & Co-conn, Columbia, MD (US);
Inventors:
Linfeng Chen, Missouri City, TX (US);
Tak W. Leung, Houston, TX (US);
Kelly Gonzalez, Katy, TX (US);
Tao Tao, Houston, TX (US);
Assignee:
W. R. Grace & Co.-Conn., Columbia, MD (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 4/649 (2006.01); C08F 10/00 (2006.01); C08F 110/06 (2006.01);
U.S. Cl.
CPC ...
C08F 4/6498 (2013.01); C08F 10/00 (2013.01); C08F 110/06 (2013.01);
Abstract
Disclosed herein are processes for preparing procatalyst compositions with an internal electron donor containing greater than 4.5 wt % of a compounded alkoxyalkyl ester. Also disclosed are catalyst compositions containing the procatalyst composition and polymers, i.e., propylene-based polymers, produced therefrom. The present procatalyst compositions improve catalyst selectivity, catalyst activity, procatalyst morphology and polymer particle morphology, and improve hydrogen response during olefin polymerization.