Carbon filled irradiation cross-linked polymeric insulation for electric cable
US4384944A · kind A · utility
58Cited by
10References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 3, 1981 |
| Grant date | May 24, 1983 |
| Priority date | — |
| Expiry date | Sep 3, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Insulation for an electric power cable, and a power cable including such insulation, the insulation having an improved dielectric strength and being irradiation cross-linked polymeric material having mixed therewith carbon black having a particle size in the range from about 200 to about 500 millimicrons, the carbon black content being about 10% to about 40% of the weight of the mixture of carbon black and the polymeric material. Also, the cable insulation may be layers of different density polyethylene, at least one of the layers being the described mixture of polyethylene and carbon black.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.