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US 11,377,520 B2Granted
Use of PEKK for producing parts with low gas permeability
AssigneeArkema France
InventorsPhilippe Bussi, Benoît Brule, Clément Paul
Life of this patent
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AssigneeArkema France
InventorsPhilippe Bussi, Benoît Brule, Clément Paul
Estimating the term…
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.
A method for lowering the CO2 and H2S permeability of a part intended to be in contact with a petroleum effluent, the method comprising using PEKK for the part, wherein the PEKK has a degree of crystallinity by mass of greater than 5%.
A method for lowering the CO2 and H2S permeability of a part intended to be in contact with a petroleum effluent, the method comprising using PEKK for the part, wherein the PEKK has a ratio T:I of 35% to 100%.
A method for lowering the CO2 and H2S permeability of a part intended to be in contact with a petroleum effluent, the method comprising using PEKK for the part, wherein the CO2 permeability at 130° C. is less than 10·10−9 cm3 of CO2 for a thickness of 1 cm and a surface area of 1 cm2, per second and per bar of CO2 pressure, and/or an H2S permeability at 130° C. is less than 10−8 cm3 for a thickness of 1 cm and a surface area of 1 cm2, per second and per bar of H2S pressure, the amount of CO2 and H2S being measured by GC, respectively.
A pipe for transporting a petroleum effluent, comprising a layer intended to be in contact with the petroleum effluent, wherein said layer intended to be in contact with the petroleum effluent comprises PEKK and has a CO2 permeability at 130° C. of less than 10·10−8 cm3 of CO2 for a thickness of 1 cm and a surface area of 1 cm2, per second and per 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, per second and per bar of H2S pressure, the amount of CO2 and H2S being measured by GC, respectively.
Dependencies are inferred from the claim text.