Low dielectric loss power cable sheaths comprising high pressure polyolefins free of silane functionality
US8329797B2 · kind B2 · utility
2Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2008 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Aug 27, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/302
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Power cables that comprise a sheath layer, e.g., an insulation layer, are produced from a mixture of a high pressure polyolefin free of silane functionality, e.g., high pressure low density polyethylene, and a polyether polyol of which at least 50 percent of its molecules comprise no more than a single hydroxyl functionality. Preferably, the power cable is a medium or high voltage power cable, and the polyolefin is crosslinked as the sheath layer is fabricated and/or subsequent to the fabrication of the sheath layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.