SUBMARINE PIPE COMPRISING A SHEATH COMPRISING A POLYPROPYLENE BLOCK COPOLYMER

The invention relates to an underwater pipe comprising a metal reinforcing layer (8) around a inner polymeric sealing sheath (20) which may be in contact with hydrocarbons, characterized in that the inner polymeric sealing sheath (20) comprises a polypropylene block copolymer or a mixture of polypro...

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Bibliographic Details
Main Author DEMANZE, Frederic
Format Patent
LanguageEnglish
Published 30.06.2021
Subjects
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORMING OPERATIONS
TRANSPORTING
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Summary:The invention relates to an underwater pipe comprising a metal reinforcing layer (8) around a inner polymeric sealing sheath (20) which may be in contact with hydrocarbons, characterized in that the inner polymeric sealing sheath (20) comprises a polypropylene block copolymer or a mixture of polypropylene block copolymers, wherein the polypropylene block copolymer or the mixture has a density greater than 0.900 g/cm3, and a melt index measured at 230?C under a mass of 2.16 kg of less than 10 g/10 minutes, its preparation method and its use for the transport of hydrocarbons. Such a sheath may be used in contact with hydrocarbons at high temperature.
Bibliography:Application Number: MY2018PI01694