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:
Feb. 28, 2023
Filed:
Aug. 30, 2017
Applicant:
W.r. Grace & Co.-conn., Columbia, MD (US);
Inventor:
Jan Willem van Egmond, Charleston, WV (US);
Assignee:
W.R. GRACE & CO.-CONN., Columbia, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 110/06 (2006.01); H01G 2/10 (2006.01); C08L 23/12 (2006.01); C09D 123/12 (2006.01); C08F 10/06 (2006.01); C08L 23/16 (2006.01); C08L 67/00 (2006.01);
U.S. Cl.
CPC ...
C08L 23/12 (2013.01); C08F 10/06 (2013.01); C08F 110/06 (2013.01); C08L 23/16 (2013.01); C08L 67/00 (2013.01); C09D 123/12 (2013.01); H01G 2/10 (2013.01); C08F 2410/01 (2013.01); C08L 2205/025 (2013.01);
Abstract
A polymerization process includes contacting an olefin or a mixture of the olefin and one or more copolymerizable comonomers under polymerization conditions with a catalyst composition and forming a polymer with a total ash content of less than 15 ppm. The catalyst composition includes one or more polymerization catalysts; and a mixed external electron donor comprising a selectivity control agent comprising at least one silicon-containing compound containing at least one C1-C10 alkoxy group bonded to a silicon atom.