US 11,993,672 B2
Production of high melt flow propylene-based polymer and product from same
Linfeng Chen, Missouri City, TX (US); Tak W. Leung, Houston, TX (US); Tao Tao, Houston, TX (US); and Kuanqiang Gao, Pearland, TX (US)
Assigned to W.R. Grace & Co.-Conn., Columbia, MD (US)
Filed by W.R. GRACE & CO.-CONN., Columbia, MD (US)
Filed on Dec. 16, 2021, as Appl. No. 17/553,687.
Application 17/553,687 is a continuation of application No. 16/445,865, filed on Jun. 19, 2019, granted, now 11,254,756.
Application 16/445,865 is a continuation of application No. 13/993,503, granted, now 10,358,505, previously published as PCT/US2011/066013, filed on Dec. 20, 2011.
Claims priority of provisional application 61/425,358, filed on Dec. 21, 2010.
Prior Publication US 2022/0177611 A1, Jun. 9, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. 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)
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)] 14 Claims
 
1. A catalyst composition comprising:
a magnesium moiety and a substituted-1,2-phenylene dibenzoate having structure (I),

OG Complex Work Unit Chemistry
wherein:
R1-R14 are the same or different;
R1 and R4 are independently selected from the group consisting of C1 to C8 alkyl and C2 to C8 alkenyl;
one of R2 and R3 is H and the other is a C1 to C20 hydrocarbyl, the hydrocarbyl comprising a cycloalkyl moiety, a cycloalkenyl moiety, or a cycloalkadienyl moiety; and
each of R5-R14 is selected from the group consisting of H, halogen, C1 to C20 hydrocarbyl, and C1 to C20 hydrocarbyloxy.