Patent · US Active

Polymer composition and a power cable comprising the polymer composition

US10586634B2 · kind B2 · utility

0Cited by

30References

16Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Ulf Nilsson · Stenungsund, SE
Annika Smedberg · Stenungsund, SE
Alfred Campus · Eysins, CH

Key dates

Filing date	Jul 10, 2018
Grant date	Mar 10, 2020
Priority date	—
Expiry date	Jul 10, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2323/08
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An alternating current (AC) power cable includes a conductor surrounded by at least an inner semiconductive layer including a first semiconductive composition, an insulation layer including a polymer composition, an outer semiconductive layer including a second semiconductive composition, and optionally a jacketing layer including a jacketing composition, in that order. The polymer composition of the insulation layer includes an unsaturated low density polyethylene (LDPE) copolymer of ethylene with one or more polyunsaturated comonomers and a crosslinking agent. The polymer composition of the insulation layer has a dielectric loss expressed as tan δ (50 Hz) of 12.0×10−4 or less, when measured at 25 kV/mm and 130° C. according to “Test for Tan δ measurements on 10 kV cables”.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.