Method and electrical apparatus comprising a water tree resistant insulating composition
US6828505B1 · kind B1 · utility
2Cited by
76References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1999 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Jan 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/441
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is an improved electric insulation composition of a polymer and an additive that reduces water treeing due to electrical aging in water. The polymer additive is a hydrophobic/hydrophilic material with good compatibility with the polymer. The present invention is also a method of preventing electrical breakdown due to the formation of water trees by forming electrical cables with the insulation containing the disclosed anti-treeing additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.