	US 12,384,909 B2
	Polymer compositions with excellent electrical and mechanical properties
Varun Thakur, Cham (CH); Xiaosong Wu, Sugar Land, TX (US); and Colin Li Pi Shan, Pearland, TX (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/639,573
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Sep. 21, 2020, PCT No. PCT/US2020/051869 § 371(c)(1), (2) Date Mar. 1, 2022, PCT Pub. No. WO2021/061578, PCT Pub. Date Apr. 1, 2021.
Claims priority of provisional application 62/904,940, filed on Sep. 24, 2019.
Prior Publication US 2022/0372266 A1, Nov. 24, 2022
Int. Cl. C08L 23/16 (2006.01)

CPC C08L 23/16 (2013.01) [C08L 2205/025 (2013.01)]

11 Claims

1. A composition comprising the following:

a) a first ethylene/alpha-olefin/nonconjugated polyene interpolymer that has a Mooney Viscosity from ≥50 to ≤100 and a weight average molecular weight Mw≤250,000 g/mol;

b) a second ethylene/alpha-olefin/nonconjugated polyene interpolymer that has a Mooney Viscosity from 28 to <50 and a weight average molecular weight Mw≤120,000 g/mol;

c) a calcined filler formed from a filler composition comprising a kaolinite

d) carbon black;

wherein the weight ratio of the carbon black to the calcined filler is ≤1.00 and wherein the composition has a Volume Resistivity ≥1×10⁹ohm·cm.