Use of PEKK for producing parts with low gas permeability
US11377520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2018 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Jun 23, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2650/40
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The use of PEKK for lowering the CO2 and H2S permeability of a part intended to enter into contact with a petroleum effluent. Also, a pipe for transporting a petroleum effluent, including a layer intended to be in contact with the petroleum effluent, wherein the layer intended to be in contact with the petroleum effluent comprises PEKK and has a CO2 permeability at 130° C. of less than 10−8 cm3, for a thickness of 1 cm and a surface area of 1 cm2 and per second and bar of CO2 pressure and/or an H2S permeability at 130° C. of less than 10−8 cm3 for a thickness of 1 cm and a surface area of 1 cm2 and per second and bar of H2S pressure, the amount of CO2 and H2S being measured by GC, respectively. Lastly, a number of methods for manufacturing such a pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.