Arkema France

Atofina

Arkema Inc.

Elf Atochem S.a.

Rkema

Thibaut Montanari

Christelle Recoquille

Philippe Blondel

Bertrand Verbauwhede

Nicolas Dufaure

Marius Hert

Patrice Perret

Vincent Ferreiro

Fabrice Montezin

Alain Bouilloux

Nicolas Amouroux

Jacques Thomasset

Chrystelle Guibouin

Christophe Lacroix

Alexandre Vermogen

Florent Dechamps

Frederic Malet

Annett Linemann

Didier Roumilhac

Gaelle Bellet

Thierry Vasselin

Pierre Nidercorn

Henri Decraemer

Thierry Briffaud

Philippe Bussi

Michael Werth

Yves Deyrail

Patrick Dang

Frédéric Malet

Thomas Fine

Mehdi M Emad

Franck Bertoux

Jean-Marc Le Blevec

Sylvain Benet

Jean-Marc Durand

Emilie Hachet

Beatrice Ladouce

Christelle Guibouin

Fabrice Glasson

Inci Turan

Marie Georgel

Zhenzhong Li

Gaëlle Bellet

A multilayer tubular structure for transporting fluids for a motor vehicle, including at least three layers: at least one layer having a composition predominantly including at least one semi-crystalline aliphatic polyamide, the composition having at least 50% of recycled material from a multilayer tube that has been intended for transporting fluids for a motor vehicle, the tube having a composition which predominantly includes at least one polyamide, at least one layer having a composition predominantly including at least one semi-crystalline aliphatic polyamide and optionally at least one impact modifier, and when the layer has a composition predominantly including at least one semi-crystalline aliphatic polyamide that is PA12 and/or PA612 and/or PA1010, then the composition includes the impact modifier, and at least one layer having a composition predominantly including at least one semi-crystalline aliphatic polyamide, the layer and the layer each having at least 90% of non-recycled material.

Multilayer structure based on recycled polyamide

A multilayer tubular structure for transporting fluids for a motor vehicle, the structure including at least three layers: at least one layer having a composition predominantly including at least one semi-crystalline aliphatic polyamide, the composition having at least 50% of recycled material from a single-layer and/or multilayer tube that has been intended for transporting fluids for a motor vehicle, the tube having a composition which predominantly includes at least one polyamide, at least one layer having a composition predominantly including at least semi-crystalline aliphatic polyamide and optionally at least one impact modifier, and when the layer has a composition predominantly including at least one semi-crystalline aliphatic polyamide that is PA12 and/or PA612 and/or PA1010, then the composition includes the impact modifier, and at least one barrier layer, the layer and the barrier layer each having at least 90% of non-recycled material.

A partially annulated flexible tubular structure located at least partially inside the fuel tank, in particular the gasoline or diesel tank, particularly the gasoline tank, of a vehicle, said structure being capable of being at least partially submerged in said tank and being intended for transporting said fuel into said tank, said tubular structure comprising at least one layer (1) comprising a composition comprising: a. between 39% and 100% by weight, in particular between 41% and 100% by weight, of at least one aliphatic polyamide of formula W/Z, b. between 0% and 4% by weight, and preferably between 0 and 2%, of at least one plasticizer, c. between 0% and 20% of at least one impact modifier, d. between 0% and 37% by weight of at least one additive, the sum of a.+b.+c.+d. being equal to 100% of the total weight of the composition, excluding a fuel transport structure running from the tank to the motor of the vehicle.

Annulated tubular structure intended for transporting fuel into the tank

The present invention relates to a multilayer tubular structure (MLT) intended for the transport of fluids, in particular of petrol, especially alcohol-containing petrol, comprising, from the outside inwards, at least one barrier layer (1) and at least one inner layer (2) located below the barrier layer,

Multilayer tubular structure having better resistance to extraction in biofuel and use thereof

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 multilayer tubular structure intended for transporting a heat-transfer fluid, the multilayer tubular structure including: a first layer including at least one long-chain polyamide having between 10 and 15 carbon atoms per nitrogen atom and including at least 50% aliphatic units relative to the sum of the units present in the long-chain polyamide; a second layer including at least one polyamide having between 4 and 9 carbon atoms per nitrogen atom, the polyamide including at least 50% aliphatic units relative to the sum of the units present in the polyamide; an optional layer, the first layer containing no continuous fibres, the second layer being in contact with the transported fluid when an optional layer is not present, and the layer or layers representing at least 50% of the total thickness of the tube.

Multilayer tubular structure intended for transporting an air-conditioning fluid

A tube connector made from a polyamide composition, the polyamide composition including at least one first polyamide A having an average number of carbon atoms per nitrogen atom Cand at least one second polyamide B having an average number of carbon atoms per nitrogen atom C, wherein C&#x2264;8.5 and C&#x2265;7.5, and wherein C&#x3c;C. The composition may include a third polyamide C having an average number of carbon atoms per nitrogen atom C, wherein C&#x2264;C.

Tube connectors based on a polyamide composition

A multilayer tubular structure MLT intended for the transport of petrol. The MLT has at least one inner barrier layer and at least one outer layer located above the barrier layer. All the layers located above the barrier layer contain from 0 to 5% of plasticizer relative to the total weight of the composition of the layer. The outer layer is predominantly at least one aliphatic polyamide. The polyamide(s) has a number of carbon atoms per nitrogen atom selected from the following:

The present invention concerns a multilayer tubular structure (MLT) intended for transporting fluids such as air, oil, water, a urea solution, a cooling liquid made from glycol, a transmission oil cooler (TOC), or an air conditioning liquid, or a fuel such as petrol, in particular bio-petrol, or diesel, in particular bio-diesel, comprising at least one layer (1) and at least one layer (2), said layer (1) comprising a composition comprising: -a) at least 50% by weight of at least one semi-aromatic polyamide of formula W/ZT, -b) at least 10% by weight, preferably at least 15%, of an impact modifier, -c) between 0 and 20% by weight of at least once plasticiser, -d) between 0 and 40% by weight of at least one additive, the sum of a) +b) +c) +d) being equal to 100%, said layer (2) comprising a composition comprising a') at least 50% by weight of at least one short-chain semi-crystalline polyamide referred to as (A), said short-chain aliphatic polyamide (A) being of formula X Y/Z, or formula V/Z, -b&#x2032;) between 0 and 15% of at least one impact modifier, -c&#x2032;) between 0 and 12% by weight of at least once plasticiser, -d&#x2032;) between 0 and 40% by weight of at least one additive, the sum a&#x2032;)+b&#x2032;)+c&#x2032;)+d&#x2032;) being equal to 100%.

Multilayer combining both good ageing properties and resistance to bursting in hot conditions, that can be used for high-temperature motor vehicle applications

Provided is a method of determining whether a multilayer tubular structure (MLT) satisfies an extractables test by filling the multilayer tubular structure MLT with an alcohol-containing petrol of FAM B type to obtain a filled MLT and measuring the amount of extractable material. The MLT satisfies the extractables test when the residue of the filtrate is less than or equal to 6 g/mof the inner surface area of the MLT.

An adhesive composition including predominantly one or two polyamide(s) having units chosen from: at least one unit denoted A with a mean number of carbon atoms per nitrogen atom, denoted CA, ranging from 4 to 8.5, advantageously from 4 to 7; at least one unit denoted B with a mean number of carbon atoms per nitrogen atom, denoted CB, ranging from 7 to 10, advantageously from 7.5 to 9.5; at least one unit denoted C with a mean number of carbon atoms per nitrogen atom, denoted CC, ranging from 9 to 18, advantageously from 10 to 18, and to the use thereof.

Adhesive composition and structure comprising at least one layer of said composition

An adhesive composition including predominantly one or two polyamide(s) having units chosen from: at least one unit denoted A having an average number of carbon atoms per nitrogen atom, denoted C, ranging from 4 to 8.5, advantageously from 4 to 7; at least one unit denoted B having an average number of carbon atoms per nitrogen atom, denoted C, ranging from 7 to 10, advantageously from 7.5 to 9.5; and at least one unit denoted C having an average number of carbon atoms per nitrogen atom, denoted C, ranging from 9 to 18, advantageously from 10 to 18, and to the use thereof.

The present invention relates to a multilayer hose for compressed air comprising, in this order:

Polyamide hose for compressed air

The invention relates to an adhesive composition comprising the mass-weighted mean of the heats of fusion of these polyamides in the said composition being greater than 25 J/g (DSC), the mean number of carbon atoms per nitrogen atom of the polyamides A, B and C also satisfying the following strict inequality: C&#x3c;C&#x3c;C, and also to multilayer structures using the said composition.

Adhesive composition and structure comprising at least one layer of the said composition

The present invention relates to a multilayer hose for compressed air comprising, in this order: an outer layer (1) made of polyamide, optionally an intermediate layer (2) of a polymer having a flexural modulus of less than 500 MPa, an inner layer (3) of a polymer having a flexural modulus of greater than 1100 MPa, the inner layer (3) being in contact with the compressed air.

Growing community of inventors

Menneval, France

Thibaut Montanari