US 11,945,896 B2
Catalyst composition and system having extended lifetime
Joseph Coalter, III, Columbia, MD (US); Rose Kent, Columbia, MD (US); Adam Marwitz, Columbia, MD (US); Ronald Epstein, Columbia, MD (US); and Michael Elder, Columbia, MD (US)
Assigned to W.R. Grace & Co.-CONN., Columbia, MD (US)
Appl. No. 17/761,451
Filed by W.R. Grace & Co.-CONN., Columbia, MD (US)
PCT Filed Sep. 10, 2020, PCT No. PCT/US2020/050042
§ 371(c)(1), (2) Date Mar. 17, 2022,
PCT Pub. No. WO2021/055212, PCT Pub. Date Mar. 25, 2021.
Claims priority of provisional application 62/902,048, filed on Sep. 18, 2019.
Prior Publication US 2022/0380491 A1, Dec. 1, 2022
Int. Cl. C08F 110/06 (2006.01); C08F 4/646 (2006.01); C08F 4/654 (2006.01)
CPC C08F 4/6541 (2013.01) [C08F 4/6465 (2013.01); C08F 110/06 (2013.01)] 21 Claims
 
1. A catalyst composition for stereoselective polymerization of propylene comprising:
a combination of a magnesium moiety, a titanium moiety, and an internal electron donor, the internal electron donor comprising:

OG Complex Work Unit Chemistry
wherein:
R1 and R4 are each a hydrocarbyl group having from 1 to 20 carbon atoms;
R2 is hydrogen;
R3 is a substituted or unsubstituted hydrocarbyl group having from 5 to 15 carbon atoms, the hydrocarbyl group having a branched or linear structure or comprising a cycloalkyl group having from 7 to 15 carbon atoms;
E1 and E2 are the same or different and selected from the group consisting of an alkyl having 1 to 20 carbon atoms, a substituted alkyl having 1 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, a substituted aryl having 6 to 20 carbon atoms, and an inert functional group having 1 to 20 carbon atoms and optionally containing heteroatoms;
X1 is NR5 and X2 is O, S, or NR5, or X2 is NR5 and X1 is O, S, or NR5; and
R5 is a hydrocarbyl group having 1 to 20 carbon atoms or is hydrogen.