Ethylene-alpha-olefin copolymer-triallyl phosphate composition

A peroxide-curable ethylene copolymer composition comprising 54.00 to 99.00 weight percent (wt %) of (A) a crosslinkable ethylene/alpha-olefin copolymer, which is made by a process comprising copolymerizing ethylene and an alpha-olefin comonomer in the presence of a molecular catalyst used for copolymerizing ethylene and the alpha-olefin comonomer, and which (A) crosslinkable ethylene/alpha-olefin copolymer has a density from 0.850 to 0.890 grams per cubic centimeter (g/cm3) measured according to ASTM D792 and is optionally characterized by at least one of properties (a) to (c):

• (a) a flexural modulus (2% secant) of from >0 to 6,500 psi (>0 to 45 MPa) measured according to ASTM D790-15e2, (b) a glass transition temperature (Tg) of −130° to −20° C. measured by differential scanning calorimetry (DSC) according to ASTM 3418-15, and (c) a melt index (190° C., 2.16 kilograms (kg), “I2”) of 0.5 decigram per minute (dg/min.) to 50 dg/min. measured according to ASTM D1238-04;
• from 0.950 to 5.00 wt % of (B) triallyl phosphate (TAP);
• from 0.050 to 5.00 wt % of (C) an organic peroxide;
• and from 0.00 to 40 wt % of (D) a supplemental polymer selected from an ethylene/unsaturated carboxylic ester copolymer, a polyethylene homopolymer, a non-(molecular catalyst)-formed ethylene/alpha-olefin copolymer, and a propylene-based polymer;
• with the proviso that the total weight of constituents (A) and (D) is 80.00 to 99.00 wt %;
• wherein all wt % are based on total weight of the peroxide-curable ethylene copolymer composition and total weight of the peroxide-curable ethylene copolymer composition is 100.0 wt %;
• wherein the alpha-olefin comonomer is a (C3-C20)alpha-olefin and the (A) crosslinkable ethylene/alpha-olefin copolymer is an ethylene(C3-C20)alpha-olefin bipolymer;
• wherein the peroxide-curable ethylene copolymer composition further comprises:
• from 0.20 to 0.50 wt % constituent (E) wherein (E) is 2,2′-thiobis(2-t-butyl-5-methylphenol,
• from 0.30 to 0.50 wt % constituent (F) wherein (F) is alpha-methyl styrene dimer (AMSD),
• from 0.10 to 0.30 wt % constituent (H) wherein (H) is 1,3,5-triazine-2,4,6-triamine, N2,N2″-1,2-ethanediylbis[N2-[3-[[4,6-bis[butyl(1,2,2,6,6-pentamethyl-4-piperidinyl)amino]-1,3,5-triazin-2-yl]amino]propyl]-N′,N″-dibutyl-N′,N″-bis(1,2,2,6,6-pentamethyl-4-piperidinyl)-, and
• from 0.40 to 0.80 wt % constituent (J) wherein (J) is a poly(ethylene glycol) having a Mn of 15000 to 25000 g/mol.