US 11,912,852 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 May 10, 2023, as Appl. No. 18/315,338.
Application 18/315,338 is a division of application No. 17/091,187, filed on Nov. 6, 2020, granted, now 11,674,028.
Application 17/091,187 is a division of application No. 15/580,362, granted, now 10,844,209, issued on Nov. 24, 2020, 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 2023/0303815 A1, Sep. 28, 2023
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)] 7 Claims
 
1. A process of making an insulated wire or cable, the process comprising the steps of:
(A) extruding onto a covered or uncovered metal conductor or optical fiber a composition having a DF measured at 130° C. (60 Hz, 2 kV) or 120° C. (60 Hz, 8 kV) or 100° C. (60 Hz, 8 kV) of ≤0.5% and comprising:
(1) a high melt strength ethylene-based polymer made in a tubular reactor and modified with at least one of PPG AEMA, a di- or higher functional (meth)acrylate, a monomeric chain transfer agent, or an asymmetrical polyene, and
(2) a peroxide, and
(B) crosslinking the modified, high melt strength ethylene-based polymer to form a crosslinked composition having gel content of greater than 30%.