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

US10844209B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Bharat I. Chaudhary · Pearland, US
• Christopher R. Eddy · Lake Jackson, US
• Sarat Munjal · Freeport, US
• Kalyan Sehanobish · Rochester Hills, US
• Hayley A. Brown · Lake Jackson, US
• John O. Osby · Lake Jackson, US
• Jose Ortega · Lake Jackson, US

Key dates

• Filing date: May 25, 2016
• Grant date: Nov 24, 2020
• Expiry date: May 25, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2500/11
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An insulated wire or cable is made by a 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 (2) a peroxide, and (B) crosslinking the high melt strength ethylene-based polymer.