# US 2013/0253128 A1 · Non-crosslinked polyethylene composition for power cable

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- Number: US 2013/0253128 A1
- Document ID: US20130253128A1
- Status: Published application
- Kind: A1
- Application number: 13/849,587
- Filed: 2013-03-25
- Published: 2013-09-26
- Earliest claimed: 2012-03-26
- Assignees: SK Global Chemical Co., Ltd.; SK Innovation Co., Ltd.
- Applicants: SK Innovation Co., Ltd.; SK Global Chemical Co., Ltd.
- Inventors: Jae Soon LEE; Kyu Cheol CHO; Kwang Hoi KU
- Web page: https://patentgrep.com/patent/US20130253128A1

## CPC

- H01B 3/307: {Other macromolecular compounds}
- H01B 3/441: {from alkenes}
- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

Provided is a non-crosslinked polyethylene composition for a power cable in which crosslinked polyethylene widely used in the world as an existing insulator for a power cable is replaced with a non-crosslinked polyethylene resin, and more particularly, a non-crosslinked polyethylene composition for a power cable having excellent processability, AC dielectric breakdown strength, space charge distribution, and water tree resistance.

## Claims

### Claim 1

A non-crosslinked polyethylene composition for a power cable comprising a binder including a linear polyethylene resin including α-olefin having at least four carbon atoms as a comonomer and having a melt index of 0.5 to 2.2 g/10 min (at 190° C. under a load of 2.16 kg), a molecular weight distribution of 2 to 5, and a density of 0.920 to 0.945 g/cm3; and additives.

### Claim 2 (depends on 1)

The non-crosslinked polyethylene composition for a power cable of claim 1, wherein the binder includes 70 to 95 weigh % of the linear polyethylene resin and 5 to 30 weight % of a low-density polyethylene resin having a melt index of 0.3 to 12 g/10 min (at 190° C. under a load of 2.16 kg) and a molecular weight distribution of 2 to 6.

### Claim 3 (depends on 1)

The non-crosslinked polyethylene composition for a power cable of claim 1, wherein the additive is any one or at least two selected from an oxidation stabilizer, a UV stabilizer, and a processing aid, and the content of the additive is 0.1 to 20 parts by weight based on 100 parts by weight of the binder.

### Claim 4 (depends on 1)

The non-crosslinked polyethylene composition for a power cable of claim 1, wherein the α-olefin having at least four carbon atoms is selected from butene, pentene, methylpentene, hexene, octene, and decene.

### Claim 5 (depends on 1)

The non-crosslinked polyethylene composition for a power cable of claim 1, further comprising 1 to 20 parts by weight of polyethylene including 0.1 to 2 weight % of a polar group in a chain and having a density of 0.920 to 0.960 g/cm3 based on 100 parts by weight of the binder.

### Claim 6 (depends on 2)

The non-crosslinked polyethylene composition for a power cable of claim 2, further comprising 1 to 20 parts by weight of polyethylene including 0.1 to 2 weight % of a polar group in a chain and having a density of 0.920 to 0.960 g/cm3 based on 100 parts by weight of the binder.

### Claim 7 (depends on 1)

A power cable manufactured using the non-crosslinked polyethylene composition of claim 1.

### Claim 8 (depends on 5)

A power cable manufactured using the non-crosslinked polyethylene composition of claim 5.