Abstract: The present invention relates to the use of a composition based on thermoplastic resin and on natural fibres, in particular plant fibres, for the manufacture of railway sleepers intended for all means of transport that need to run on rails, in particular trains, trams, and underground trains. The present invention also relates to railway sleepers produced from said composition.

Abstract: The invention concerns the use of a composition comprising: 45% to 85% by weight, with respect to the total weight of the polymers present in the composition, of one or more non-grafted PVC resins with a K value in the range 50 to 90; and 15% to 55% by weight, with respect to the total weight of the polymers present in the composition, of one or more resins of PVC grafted onto one or more polymers selected from C1-C18 alkyl polyacrylates, C1-C18 alkyl polymethacrylates and mixtures thereof; for the manufacture of tubes for transporting drinking water or physiological liquids.

Abstract: The invention concerns a thermoplastic resin-based composition, for making single-layer or multilayer skins (or composite structures), having a speckled appearance, and a method for obtaining same. Said composition comprises: 10 to 99 wt. % of a compound or “matrix” of a polyvinyl chloride thermoplastic (PVC) resin; 0.5 to 90 wt. % of at least a compound or “inclusion” of a thermoplastic resin containing at least one colouring pigment: 0.5 to 20 wt. % of speckling agents selected among colouring pigments, metal particles or decorative flakes, glass beads, polymeric particles.

Abstract: The present invention relates to a composition based on plasticized polyvinyl chloride (PVC) thermoplastic resins for producing a layer of a composite structure or skin, said layer being provided on its outer surface with a coating, characterized in that the composition comprises, expressed as percent by weight: —from 40% to 60% of one or more PVC resins with a K value of between 50 and 80. —from 30% to 50% of one or more types of plasticizers, at least one of which is polymeric in nature, or is a heavy monomeric plasticizer, —from 1% to 20% of additives, such as pigments or fillers, stabilizers, antioxidants, processing additives and lubricants. The invention also provides the process for producing these composite skins by moulding, and their use for parts of the passenger compartment of automotive vehicles, such as, in particular, airbag-equipped dashboards.

Abstract: This invention relates to compositions resulting from the reaction, in aqueous phase, of aluminum hydroxide, of alkali metal cation hydroxide and of calcium or strontium hydroxide. The addition of such a composition to PVC resins or to olefinic resins from Ziegler catalysis prevents the degradation of these resins under the effect of light or of heat, in particular during extrusion.