US 11,898,026 B2
Air-curable ethylene/alpha-olefin/diene interpolymer composition
Bo Lyu, Shanghai (CN); Yabin Sun, Shanghai (CN); Tao Han, Shanghai (CN); Jozef Van Dun, Horgen (CH); and Colin LiPiShan, Lake Jackson, TX (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 16/652,123
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Nov. 8, 2017, PCT No. PCT/CN2017/104810
§ 371(c)(1), (2) Date Mar. 30, 2020,
PCT Pub. No. WO2019/090448, PCT Pub. Date May 16, 2019.
Prior Publication US 2020/0263018 A1, Aug. 20, 2020
Int. Cl. C08L 23/16 (2006.01); C08K 5/14 (2006.01); C08K 5/3435 (2006.01)
CPC C08L 23/16 (2013.01) [C08K 5/14 (2013.01); C08K 5/3435 (2013.01); C08L 2312/02 (2013.01)] 7 Claims
 
1. A composition comprising:
a reaction product of
(A) from 96 wt % to 98 wt % of a crosslinkable polymer consisting of an ethylene/propylene/5-ethylidene-2-norbornene interpolymer, the ethylene/propylene/5-ethylidene-2-norbornene interpolymer with from 60 wt % to 80 wt % of ethylene, based on the total weight of the ethylene/propylene/5-ethylidene-2-norbornene interpolymer, 10 wt % to 35 wt % of propylene, based on the total weight of the ethylene/propylene/5-ethylidene-2-norbornene interpolymer, and from greater than 3 wt % to 7 wt % of 5 ethylidene-2-norbornene, based on the total weight of the ethylene/propylene/5-ethylidene-2-norbornene interpolymer, wherein the ethylene, the propylene, and the 5-ethylidene-2-norbornene amount to 100 wt % of the crosslinkable polymer;
(B) from 1.25 wt % to 1.48 wt % of a peroxide comprising at least one —O—O— peroxide bond, based on the total weight of the composition;
(C) from 0.25 wt % to 2.0 wt % of piperidinoxy,4-hydroxy-2,2,6,6-tetramethyl sebacate compound having Structure I, based on the total weight of the composition:

OG Complex Work Unit Chemistry
wherein the ratio of the molar amount of nitroxide (NO·) groups of the component (C) to the molar amount of the peroxide bonds of the component (B) is from 0.180:1.000 to 0.900:1.000;
wherein the (A), the (B), and the (C) amount to 100 wt % of the composition, the reaction product is crosslinked and has a degradation degree from greater than 0.000 to 0.200, a difference between maximum torque MH and minimum torque (MH-ML) of from 15.50 dNm to 17.00 dNm, an FTIR-ATR degradation H1460 from 190 to 205, and a FTIR-ATR degradation H1714 value from less than or equal to 20 to greater than 0.