Multilayer reservoir made of thermoplastic material for storing hydrocarbons
AssigneeSolvay (Societe Anonyme)
InventorsDidier Masson, Thierry Debelle, Jules-Joseph Van Schaftingen, Paul Wouters
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Abstract
The wall of the container comprises at least one thick outer layer consisting essentially of a thermoplastic material which imparts good mechanical properties, and a thin inner layer consisting of a thermoplastic material adapted to receive a surface treatment intended to increase its impermeability to hydrocarbons, preferably consisting essentially of one or plurality of virgin polyolefins. The container is particularly suitable for use in automobiles.
Claims13
A multilayer container for storing hydrocarbon, said container having walls comprising at least two layers, including at least one outer layer consisting of a thermoplastic material, and an inner layer consisting of a thermoplastic material of at least one virgin polyolefin subjected to a surface treatment by fluoration or sulfonation for the purpose of increasing its impermeability to hydrocarbons,
- said inner layer containing one or a plurality of hydroxyaromatic compounds—whose hydroxyl group is stearically hindered, compounds whose total weight in any case does not exceed about 1.3 g per kg of thermoplastic material constituting the inner layer.
Dependencies are inferred from the claim text.