US 11,965,085 B2
Ethylene propylene copolymer compounds for use in layered articles
Zhifeng Bai, Houston, TX (US); Scott H. Loyd, League City, TX (US); Narayanaswami Dharmarajan, Houston, TX (US); Rainer Kolb, Kingwood, TX (US); David W. Abmayr, Jr., Houston, TX (US); and Khodabakhsh Irani, Houston, TX (US)
Assigned to ExxonMobil Engineering & Technology Company, Baytown, TX (US)
Appl. No. 17/419,039
Filed by ExxonMobil Chemical Patents Inc., Baytown, TX (US)
PCT Filed Jan. 10, 2020, PCT No. PCT/US2020/013074
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/150090, PCT Pub. Date Jul. 23, 2020.
Claims priority of provisional application 62/791,923, filed on Jan. 14, 2019.
Prior Publication US 2022/0119633 A1, Apr. 21, 2022
Int. Cl. C08L 23/16 (2006.01); B32B 1/08 (2006.01); B32B 25/04 (2006.01); B32B 25/14 (2006.01); F16G 5/22 (2006.01)
CPC C08L 23/16 (2013.01) [B32B 1/08 (2013.01); B32B 25/042 (2013.01); B32B 25/14 (2013.01); B32B 2270/00 (2013.01); B32B 2413/00 (2013.01); B32B 2419/06 (2013.01); B32B 2597/00 (2013.01); C08L 2201/08 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2207/322 (2013.01); F16G 5/22 (2013.01)] 20 Claims
 
1. An article comprising:
a multilayer structure with at least one layer comprising an ethylene propylene diene copolymer compound that comprises:
60 parts per hundred rubber (phr) to 95 phr of a first ethylene propylene diene copolymer having an ethylene content of 62 wt % to 90 wt % based on the first ethylene propylene diene copolymer and a heat of fusion (Hf) of 15 J/g or greater;
5 phr to 40 phr of a second ethylene propylene diene copolymer having an ethylene content of 40 wt % to 60 wt % based on the second ethylene propylene diene copolymer and a heat of fusion (Hf) of 0 J/g;
wherein the first ethylene propylene diene copolymer and second ethylene propylene diene copolymer combined are 100 parts;
a filler at 40 phr to 500 phr; and
a curing agent at 0.5 phr to 20 phr.