Solvay (Societe Anonyme)

Solvay Sa

Vincent Thulliez

Guy Laurent

Yves-Julien Lambert

Fredy Declerck

Jean-Marie Oreins

Yves Vanderveken

Nestor Maquet

Pierre Lasson

Yves-Julian Lambert

Crosslinkable vinylidene fluoride polymer composition, process for crosslinking the composition and shaped articles

Polymeric adhesive and structures with multiple polymeric layers, their process of preparation and their use

Polymeric adhesive comprising a homogeneous mixture of at least three constituents: (a) at least one thermoplastic halogenated hydrocarbon polymer, (b) at least one copolymer of monoethylenic monomers which carry an alkyl carboxylate functional group and (c) at least one alpha-olefin polymer modified by the incorporation of at least one functional group chosen from a carboxyl, an acid anhydride, a hydroxyl and an epoxide. Process for the preparation of this polymeric adhesive and use of this polymeric adhesive in the preparation of structures with multiple polymeric layers. Structures with multiple polymeric layers comprising a layer (A) based on thermoplastic halogenated hydrocarbon polymer bonded to a layer (C) based on thermoplastic nonhalogenated polymer incompatible with (A) via a layer (B) based on this polymeric adhesive. Process for the preparation of these structures with multiple polymeric layers and use of these structures with multiple polymeric layers in the preparation of pipes, tubes, films, sheets, panels or hollow bodies which can be used in particular in the automobile field.

Composition which can be crosslinked under the effect of an ionizing radiation comprising a thermoplastic copolymer of vinylidene fluoride and of chlorotrifluoroethylene and an effective amount of a crosslinking promoter, such as a triallyl cyanurate or triallyl isocyanurate. Process for the crosslinking by irradiation of the crosslinkable composition under air by means of an ionizing radiation, such as .beta.-radiation, at a dose of 10 to 100 kGray. Crosslinkable and crosslinked shaped articles, such as sheaths for electrical cables and pipes for oil products.

Crosslinkable vinylidene fluoride polymer composition, process for

The compositions based on copolymers of vinylidene fluoride and of ethylenically unsaturated fluorine-containing comonomers, containing at least 75% by weight of vinylidene fluoride include polyvinyl chloride and an effective quantity of a methacrylic polymer (producing compatibility). These compositions exhibit in particular improved dielectric properties, which makes them particularly advantageous for sheathing electrical cables.

Compositions based on vinylidene fluoride copolymers including polyvinyl

Polymer compositions based on fluoropolymers intended especially for the manufacture of electrical cables and of flexible pipes, comprising, by weight,

Polymer compositions intended for the manufacture of cables and flexible

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Vincent Thulliez