Flexible pipe
AssigneeNKT Flexibles I/S
InventorInger-Margrete Procida
Life of this patent
Estimating the term…
Abstract
The invention relates to a flexible pipe comprising at least one polymer layer, and at least one armouring layer unbounded to said polymer layer, wherein at least one polymer layer is a cationic clay containing polymer layer of a polymer material comprising a polymer matrix and from about 0.1 to about 5% by weight of at least one cationic clay silicate. Preferred cationic clay silicates comprise kaolinite; smectite; lllite; chlorite; and synthetic cationic clays. The cationic clay silicate may e.g. be an organo-cationic clay. The cationic clay silicate may preferably be exfoliated and/or intercalated in the polymer matrix. The polymer layer may preferably comprise an inner liner, a thermally insulating layer, an anti-wear layer and/or an outer sheath or a sub-layer thereof.
Claims32
A flexible pipe comprising at least one polymer layer, and at least one armouring layer unbounded to said polymer layer, said flexible pipe comprises at least one polymer layer which is a cationic clay silicate containing polymer layer of a polymer material comprising a polymer matrix and from about 0.1 to about 5% by weight of at least one cationic clay silicate.
A flexible pipe as claimed in any one of the preceding claims wherein said at least one cationic clay silicate is intercalated in the polymer matrix.
A flexible pipe comprising at least one polymer layer, and at least one armouring layer unbounded to said polymer layer, said flexible pipe comprises an inner liner which is a cationic clay silicate containing polymer layer of a polymer material comprising a polymer matrix and from about 0.1 to about 5% by weight of at least one cationic clay silicate, said inner liner providing the innermost barrier to a fluid to be transported in the pipe.
A flexible pipe comprising at least one polymer layer, and at least one armouring layer unbounded to said polymer layer, said flexible pipe comprises an intermediate layer which is a cationic clay silicate containing polymer layer of a polymer material comprising a polymer matrix and from about 0.1 to about 5% by weight of at least one cationic clay silicate, said intermediate layer is an anti-wear layer.
Dependencies are inferred from the claim text.