Tree resistant insulation compositions
US7968623B2 · kind B2 · utility
3Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 2008 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Oct 18, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L79/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Insulation compositions for electric power cables having a polyolefin base polymer and an additive comprising either low molecular weight wax or polyethylene glycol (PEG) and optionally further comprising one or more hindered amine light stabilizers, amine antioxidants and other antioxidant blends are disclosed. Also disclosed are insulation compositions comprising a C2 to C8 alpha olefin in combination with a polyethylene homopolymer together with, optionally, one or more hindered amine light stabilizer and a liquid cresol antioxidant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.