US 12,065,523 B2
Tri-functional long-chain branched polyolefin
Robert D. J. Froese, Midland, MI (US); Teresita Kashyap, Lake Jackson, TX (US); Oscar D. Redwine, Coleman, MI (US); Daniel J. Arriola, Midland, MI (US); Robert L. Sammler, Midland, MI (US); and Cornelis F. J. Den Doelder, Terneuzen (NL)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/599,723
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Mar. 27, 2020, PCT No. PCT/US2020/025387
§ 371(c)(1), (2) Date Sep. 29, 2021,
PCT Pub. No. WO2020/205585, PCT Pub. Date Oct. 8, 2020.
Claims priority of provisional application 62/826,274, filed on Mar. 29, 2019.
Prior Publication US 2022/0227905 A1, Jul. 21, 2022
Int. Cl. C08F 210/18 (2006.01)
CPC C08F 210/18 (2013.01) 15 Claims
 
1. A polymer comprising the polymerized product of ethylene, at least one diene comonomer, and optionally at least one C3 to C14 comonomer in the presence of a dual chain catalyst, wherein: the diene has a structure according to formula (I):

OG Complex Work Unit Chemistry
where X is SiR2, wherein each R is independently C1-C12 hydrocarbyl or —H; and the polymer comprises tri-functional long-chain branches resulting from the diene that occur at a frequency of at least 0.03 per 1000 carbon atoms of the polymer.