Claims
- 1. An insulated electric power cable having an insulator layer formed by extrusion-coating and cross-linking a cross-linkable resin composition, which comprises a polyolefin blended with a total of 0.05 to 0.4 parts by mass of at least one compound selected from the group consisting of bis(3-ethyl-5-methyl-4-maleimidophenyl)methane, 2,2-bis[4-(4-maleimidophenoxy) phenyl]propane, N,N′-m-phenylenebismaleimide, N,N′-(4,4,′-diphenylmethane)bismaleimide, and a compound represented by the following formula (1), based on 100 parts by mass of the polyolefin, and a prescribed amount of an organic peroxide cross-linking agent: wherein n is an integer of 1 or more.
- 2. The insulated electric power cable according to claim 1, wherein the organic peroxide cross-linking agent is a compound for which 1-hour half-life temperature is at least 140° C.
- 3. The insulated electric power cable according to claim 1, wherein a prescribed amount of an anti-scorching agent is further added to the cross-linkable resin composition.
- 4. The insulated electric power cable according to claim 1, wherein the cable is a direct-current electric power cable.
- 5. An insulated electric power cable carrying direct current and having an insulator layer formed by extrusion-coating and cross-linking a cross-linkable resin composition, which comprises a polyolefin blended with a total of 0.05 to 0.4 parts by mass of at least one compound selected from the group consisting of bis(3-ethyl-5-methyl-4-maleimidophenyl)methane, 2,2-bis[4-(4-maleimidophenoxy) phenyl]propane, N,N′-m-phenylenebismaleimide, N,N′-(4,4′-diphenylmethane)bismaleimide, and a compound represented by the following formula (1), based on 100 parts by mass of the polyolefin, and a prescribed amount of an organic peroxide cross-linking agent: wherein n is an integer of 1 or more.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2000-225488 |
Jul 2000 |
JP |
|
Parent Case Info
This is a continuation of PCT Application PCT/JP01/06408, filed Jul. 25, 2001. The prior PCT application was not published in English under PCT Article 21(2).
Foreign Referenced Citations (6)
Number |
Date |
Country |
0 579 434 |
Jul 1993 |
EP |
61-253705 |
Nov 1986 |
JP |
62-100909 |
May 1987 |
JP |
04-368717 |
Dec 1992 |
JP |
06-309931 |
Nov 1994 |
JP |
08-283470 |
Oct 1996 |
JP |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/JP01/06408 |
Jul 2001 |
US |
Child |
10/081003 |
|
US |