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AssigneesArkema France, Shinil Chemical Industry Co., Ltd.
InventorsHyungmin KIM, Nicolas DUFAURE, Antoine GOUPIL, Keumsuk SEO
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The present invention relates to the use of a composition comprising at least one polyamide whose average number of carbon atoms per nitrogen atom is greater than 6, in particular greater than or equal to 7, in particular greater than or equal to 8, and clays for the preparation of a tubular structure intended for the transport of fuel, in particular gasoline, in particular alcohol, said tubular structure comprising at least one layer (1) comprising said composition and having a reduction of extractables, in particular oligomers, extracted by said fuel in relation to the same structure comprising the same composition but devoid of clays, said composition being devoid of a polyamide obtained by polycondensation of meta-xylylene diamine with a dicarboxylic acid Cb in C4 to C36.
A method of preparing a tubular structure configured for the transport of a fuel, the method comprising preparing the tubular structure with a composition comprising at least one polyamide whose average number of carbon atoms per nitrogen atom is greater than 6, said tubular structure comprising at least one layer comprising said composition and having a reduction of extractables, in particular oligomers, extracted by said fuel in relation to the same structure comprising the same composition but devoid of clays,
Tubular structure for the transport of fuel, said tubular structure comprising at least one layer comprising a composition comprising at least one polyamide whose average number of carbon atoms per nitrogen atom is greater than 6 and clays, said tubular structure having a reduction of extractables, in particular oligomers, extracted by said fuel in relation to the same structure comprising the same composition but devoid of clays, said composition being devoid of a polyamide obtained by polycondensation of meta-xylylene diamine with a dicarboxylic acid Cb in C4 to C36.
Composition comprising by weight:
Dependencies are inferred from the claim text.