	US 11,732,121 B2
	Elastomeric propylene-alpha-olefin-diene terpolymer compositions
Scott H. Loyd, League City, TX (US); Rainer Kolb, Kingwood, TX (US); Narayanaswami Dharmarajan, Houston, TX (US); Andy H. Tsou, Houston, TX (US); Zhifeng Bai, Houston, TX (US); and James N. Coffey, League City, TX (US)
Assigned to ExxonMobil Chemical Patents Inc., Baytown, TX (US)
Appl. No. 16/976,678
Filed by ExxonMobil Chemical Patents Inc., Baytown, TX (US)
PCT Filed Mar. 18, 2019, PCT No. PCT/US2019/022700 § 371(c)(1), (2) Date Aug. 28, 2020, PCT Pub. No. WO2019/182949, PCT Pub. Date Sep. 26, 2019.
Claims priority of provisional application 62/644,718, filed on Mar. 19, 2018.
Prior Publication US 2021/0047505 A1, Feb. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 23/16 (2006.01); C08F 210/18 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08F 210/08 (2006.01); C08F 236/20 (2006.01); C08K 3/04 (2006.01); C08K 3/22 (2006.01); C08K 5/00 (2006.01); C08K 5/098 (2006.01); C08L 91/00 (2006.01); F16H 7/02 (2006.01)

CPC C08L 23/16 (2013.01) [C08F 4/6592 (2013.01); C08F 4/65912 (2013.01); C08F 210/02 (2013.01); C08F 210/06 (2013.01); C08F 210/08 (2013.01); C08F 210/18 (2013.01); C08F 236/20 (2013.01); C08K 3/04 (2013.01); C08K 3/22 (2013.01); C08K 5/0025 (2013.01); C08K 5/098 (2013.01); C08L 91/00 (2013.01); F16H 7/023 (2013.01); C08K 2003/2296 (2013.01); C08L 2205/035 (2013.01); C08L 2310/00 (2013.01)]

22 Claims

1. An elastomeric composition comprising:

from 5 to 40 parts by weight per hundred parts by weight rubber (phr) of a propylene-α-olefin-diene (PEDM) terpolymer comprising 75 to 95 wt % propylene, 5 to 20 wt % α-olefin, and 0.5 to 5 wt % diene, said wt % based on the weight of the PEDM terpolymer, wherein the PEDM terpolymer has an H_fless than half 1 J/g; and

from 60 to 95 phr of an ethylene-based copolymer comprising ethylene, one or more C₃to C₁₂α-olefins, and, optionally, one or more dienes; wherein an ethylene-based based copolymer comprises 40 to 95 wt % ethylene, 0 to 10 wt % of one or more dienes, and a C₃to C₁₂α-olefin, said wt %s based on a total weight of the ethylene-based copolymer.