公开(公告)号：US20230279224A1

公开(公告)日：2023-09-07

申请号：US18004335

申请日：2021-07-06

Applicant: ARKEMA FRANCE

Inventor： Nicolas DUFAURE ,  Florent DECHAMPS ,  Thierry VASSELIN ,  Sebastien VAUTIER ,  Pierre NIDERCORN

IPC: C08L77/02

CPC classification number: C08L77/02 ,  C08L2203/18 ,  C08L2207/20

Abstract: A single-layer tubular structure intended to convey fluids for a motor vehicle, formed by a layer formed by a composition predominantly including at least one catalyzed semi-crystalline aliphatic polyamide, the composition being formed by at least 30% by weight, in particular at least 50% by weight, of recycled material originating from at least one single-layer and/or multi-layer tube that was intended to convey fluids for a motor vehicle, the at least one single-layer and/or multi-layer tube being formed by a composition that predominantly includes at least one catalyzed or non-catalyzed polyamide, said at least one single-layer and/or multi-layer tube having been crushed, then at least recompounding with or without the addition of at least one catalyst to be able to be recycled, a simple one-off crushing being excluded.

公开(公告)号：US20180080583A1

公开(公告)日：2018-03-22

申请号：US15558358

申请日：2017-01-12

Applicant: Arkema France

Inventor： Thibaut Montanari ,  Christelle RECOQUILLE ,  Bertrand VERBAUWHEDE ,  Nicolas DUFAURE ,  Florent DECHAMPS

IPC: F16L11/04 ,  F16L11/12 ,  B32B1/08 ,  B32B27/08 ,  B32B27/22 ,  B32B27/30 ,  B32B27/34

CPC classification number: F16L11/045 ,  B32B1/08 ,  B32B7/02 ,  B32B27/08 ,  B32B27/18 ,  B32B27/22 ,  B32B27/286 ,  B32B27/304 ,  B32B27/306 ,  B32B27/322 ,  B32B27/34 ,  B32B2307/7265 ,  B32B2597/00 ,  B32B2605/08 ,  F16L11/04 ,  F16L11/125 ,  F16L2011/047

Abstract: A multilayer tubular structure (MLT) for transport of alcohol-containing petrol. The MLT from the outside inwards has at least one barrier layer and at least one inner layer located below the barrier layer. The inner layer, or all the layers contain on average at most 1.5% of plasticizer relative to the total weight of the composition of each layer or to the total weight of all the compositions of the layers. The inner layer is predominantly made of at least one polyamide having more than 75% aliphatic units. The aliphatic polyamide has a mean number of carbon atoms per nitrogen atom selected from the following: A: from 4 to 8.5; B: from 7 to 10; C: from 9 to 18; with the proviso that when the inner layer comprises at least three polyamides, at least one of the polyamides A, B and C is excluded.