US 11,674,028 B2
Process for making crosslinked cable insulation using high melt strength ethylene-based polymer made in a tubular reactor and optionally modified with a branching agent
Bharat I. Chaudhary, Collegeville, PA (US); Christopher R. Eddy, Freeport, TX (US); Sarat Munjal, Freeport, TX (US); Kalyan Sehanobish, Midland, MI (US); Hayley Brown, Freeport, TX (US); John O. Osby, Freeport, TX (US); and Jose Ortega, Freeport, TX (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Filed by Dow Global Technologies LLC, Midland, MI (US)
Filed on Nov. 6, 2020, as Appl. No. 17/91,187.
Application 17/091,187 is a division of application No. 15/580,362, granted, now 10,844,209, previously published as PCT/US2016/034000, filed on May 25, 2016.
Claims priority of provisional application 62/180,706, filed on Jun. 17, 2015.
Prior Publication US 2021/0054182 A1, Feb. 25, 2021
Int. Cl. C08L 23/26 (2006.01); C08L 23/08 (2006.01); C08F 2/01 (2006.01); C08J 3/24 (2006.01); H01B 3/30 (2006.01); C08K 5/14 (2006.01)
CPC C08L 23/26 (2013.01) [C08F 2/01 (2013.01); C08J 3/24 (2013.01); C08K 5/14 (2013.01); C08L 23/0846 (2013.01); H01B 3/307 (2013.01); C08F 2500/11 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A wire or cable comprising:
a metal conductor or an optical fiber;
an insulation sheath extruded onto the metal conductor or optical fiber, the insulation sheath comprising a crosslinked composition polymer having gel content of greater than 30% and composed of
an ethylene-based polymer modified with at least one of poly(propylene glycol) allyl ether methacrylate (PPG AEMA), a chain transfer agent, or an asymmetrical polyene, wherein
(A) the crosslinked composition has a dissipation factor (DF) measured at 130° C. (60 Hz, 2 kV) of less than or equal to (≤)0.5%; and
(B) the ethylene-based polymer prior to crosslinking satisfies the following equation at a test temperature of 190° C.
Melt Strength=Ce−0.3(melt index with 2.16 kg load)
where the parameter C is greater than or equal to (>) 15.