MULTILAYER TUBULAR STRUCTURE HAVING A LOW EXTRACTABLES CONTENT FOR TRANSPORTING HYDROGEN
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United States of America
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Issued Date -
Nov 21, 2024
app pub date -
Sep 22, 2022
filing date -
Sep 22, 2022
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Abstract
A multilayer tubular structure intended for the transportation of hydrogen, including, from the outside toward the inside, at least one barrier layer and at least one internal layer located below the barrier layer, the internal layer or the combination of the layers and of the other optional layers located below the barrier layer containing, on average, from 0% to 1.5% by weight of plasticizer, with respect respectively to the total weight of the composition of the layer or to the total weight of the combination of the compositions of the layers and of the other optional layers located below the barrier layer, the internal layer exhibiting a content of extractables of less than or equal to 3% by weigh of the sum of the constituents of the composition, the internal layer predominantly including at least one polyamide of aliphatic type or having more than 75% of aliphatic units.
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