Polymer composition comprising a polyolefin produced in a high pressure process, a high pressure process and an article
US10246527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2010 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Sep 14, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A power cable includes a conductor surrounded by one or more layers. At least one of the layers can include a polymer composition having an electric conductivity of 0.50×10−15 S/m or less when measured according to DC conductivity method using a tape sample. The polymer composition can include a polyolefin which is obtainable by a high pressure polymerization process. This process includes: compressing one or more monomers under pressure in a compressor, in which a compressor lubricant, such as mineral oil is used for lubrication; polymerizing a monomer optionally together with one or more comonomers in a polymerization zone; and separating the obtained polyolefin from the unreacted products and recovering the separated polyolefin in a recovery zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.