Use of a hose based on an irradiation-grafted fluoropolymer for transporting petrol in service station

According to a first embodiment, the present invention relates to the use for transporting petrol in a service station of a hose comprising: an inner layer in cont with the fluid to be transported, consisting of a fluoropolymer onto which an unsaturated monomer has been irradiation-grafted and, dire...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	O'BRIEN, GREGORY, SEBIRE, PASCAL, WERTH, MICHAEL, BONNET, ANTHONY, CHOPINEZ, FABRICE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BOTTLES, JARS OR SIMILAR CONTAINERS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING LIQUID HANDLING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY OPENING, CLOSING ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	According to a first embodiment, the present invention relates to the use for transporting petrol in a service station of a hose comprising: an inner layer in cont with the fluid to be transported, consisting of a fluoropolymer onto which an unsaturated monomer has been irradiation-grafted and, directly attached to the latter, a polyolefin outer layer. According to a variant, the hose comprises a fluoropolymer, preferably PDVF, layer placed beside the irradiation-grafted fluoropolymer. According to a second embodiment, the hose comprises: a central layer consisting of an irradiation-grafted fluoropolymer and, directly attached to the latter, a polyolefin outer layer and a polyolefin inner layer. The polyolefin inner layer is the layer in contact with the petrol. According to a variant, the irradiation-grafted fluoropolymer layer is replaced with a layer of a blend of a fluoropolymer, preferably PVDF, and of an irradiation-grafted fluoropolymer. According to a third embodiment, the hose comprises: a central layer consisting of a polyolefin and, directly attached to the latter, an irradiation-grafted fluoropolymer outer layer and an irradiation-grafted fluoropolymer inner layer. According to a variant, at least one of the layers of irradiation-grafted fluoropolymer (optionally blended with a fluoropolymer) is covered with a fluoropolymer, preferably PVDF, layer The irradiation-grafted fluoropolymer layer is a tie layer between the PVDF layer and the polyolefin layer. The inner layer in contact with the petrol is therefore either a fluoropolymer (preferably PVDF) layer or an irradiation-grafted fluoropolymer layer or a layer of a blend of a fluoropolymer, preferably PVDF, and of an irradiation-grafted fluoropolymer.