US 12,305,027 B2
Ethylene-based copolymer and propylene-alpha-olefin-diene compositions for use in layered articles
Zhifeng Bai, Houston, TX (US); Scott H. Loyd, League City, TX (US); Narayanaswami Dharmarajan, Houston, TX (US); David W. Abmayr, Jr., Houston, TX (US); Brian J. Rohde, Houston, TX (US); and Jason A. Mann, Houston, TX (US)
Assigned to ExxonMobil Engineering & Technology Company, Baytown, TX (US)
Appl. No. 17/624,895
Filed by ExxonMobil Chemical Patents Inc., Baytown, TX (US)
PCT Filed Jul. 17, 2020, PCT No. PCT/US2020/042568
§ 371(c)(1), (2) Date Jan. 5, 2022,
PCT Pub. No. WO2021/011883, PCT Pub. Date Jan. 21, 2021.
Claims priority of provisional application 62/875,196, filed on Jul. 17, 2019.
Prior Publication US 2022/0290014 A1, Sep. 15, 2022
Int. Cl. C08L 23/16 (2006.01); B60C 1/00 (2006.01); C08F 4/602 (2006.01); C08F 4/6592 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08J 3/22 (2006.01); C08J 3/24 (2006.01); C08K 5/01 (2006.01); C08L 7/00 (2006.01); C08L 9/00 (2006.01); C08L 23/22 (2006.01); C08L 23/283 (2025.01); C09J 123/16 (2006.01)
CPC C08L 23/16 (2013.01) [B60C 1/0008 (2013.01); B60C 1/0025 (2013.01); C08F 4/6028 (2013.01); C08F 4/6592 (2013.01); C08F 210/02 (2013.01); C08F 210/06 (2013.01); C08J 3/22 (2013.01); C08J 3/24 (2013.01); C08K 5/01 (2013.01); C08L 7/00 (2013.01); C08L 9/00 (2013.01); C08L 23/22 (2013.01); C08L 23/283 (2013.01); C09J 123/16 (2013.01); C08L 2205/02 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2312/00 (2013.01); C08L 2314/06 (2013.01); C09J 2423/16 (2013.01); C09J 2467/006 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An elastomeric composition comprising per 100 parts by weight of rubber (phr):
from 5 to 80 phr of a propylene-α-olefin-diene (PEDM) terpolymer comprising 90 wt % to 97.5 wt % propylene, 2.5 wt % to 20 wt % α-olefin, and 0.5 wt % to 10 wt % diene, said wt % based on the weight of the PEDM terpolymer, wherein the wt % numbers are uncorrected numbers and the wt % propylene plus the wt % α-olefin equals 100%, and wherein the PEDM terpolymer has (a) Mooney viscosity (ML(1+4)@125° C.) of 1 MU to 60 MU, (b) melt flow rate of 0.5 g/min to 100 g/min, (c) a weight average molecular weight to n-average molecular weight (Mw/Mn) ratio of 1.5 to 3.0, and (d) a heat of fusion of less than 1 J/g; and
from 25 to 95 phr of an ethylene-based copolymer comprising 40 wt % to 95 wt % ethylene, 0 wt % to 10 wt % of one or more dienes, and 5 wt % to 60 wt % C3 to C12 α-olefin, said wt % based on the total weight of the ethylene-based copolymer, wherein the wt % numbers are uncorrected numbers and the wt % ethylene plus the wt % of C3 to C12 α-olefin equals 100%.