Abstract: A method for preparing a composite material that includes the steps of: (i) heat treating natural lignocellulosic fibers at a temperature of 130 to 320° C. for 2 minutes to 24 hours in an atmosphere oxygen-deficient in and in the presence of water vapor, and (ii) mixing the heat treated natural lignocellulosic fibers with at least one thermoplastic polymer in the molten state and whose melting point is less than or equal to 230° C. The method is useful for producing vehicle parts from a composite material having natural lignocellulosic fibers with reduced volatile organic compound odor emissions.

Abstract: A composition that includes: (a) from 65 to 85% by weight of polypropylene homopolymer in powder form, the average particle size of which is micrometric, (b) from 14 to 30% by weight, preferably 14 to 25% by weight, of natural fibers less than or equal to 2 mm in length, and (c) from 1 to 3% by weight of compatibilizer, its uses for the preparation of a composite material by extrusion, wherein this composite material is useful for preparing a part by injection, in particular a vehicle part whose rigidity is improved.

Abstract: A composition that includes: (a) from 65 to 85% by weight of polypropylene homopolymer in powder form, the average particle size of which is micrometric, (b) from 14 to 30% by weight, preferably 14 to 25% by weight, of natural fibers less than or equal to 2 mm in length, and (c) from 1 to 3% by weight of compatibilizer, its uses for the preparation of a composite material by extrusion, wherein this composite material is useful for preparing a part by injection, in particular a vehicle part whose rigidity is improved.

Abstract: A method for preparing a composite material that includes the steps of: (i) heat treating natural lignocellulosic fibers at a temperature of 130 to 320° C. for 2 minutes to 24 hours in an atmosphere oxygen-deficient in and in the presence of water vapor, and (ii) mixing the heat treated natural lignocellulosic fibers with at least one thermoplastic polymer in the molten state and whose melting point is less than or equal to 230° C. The method is useful for producing vehicle parts from a composite material having natural lignocellulosic fibers with reduced volatile organic compound odor emissions.

Abstract: The invention relates to an injectable composite material comprising: (a) 28 to 95% by weight of a polypropylene-polyethylene copolymer; (b) 0 to 10% by weight of a flow enhancer; (c) 1 to 20% by weight of an impact modifier; (d) 1 to 20% by weight of a compatibilizing agent; and (e) 3 to 70% by weight of natural fibers, wherein the polypropylene-polyethylene copolymer forms a matrix. It also relates to a method for preparing this composite material as well as to a method for its use for manufacturing parts by injection or by overmolding.

Abstract: The invention relates to a compound of the following formula (I): to its method for making it and to its uses for preparing a polymer useful for increasing the heat resistance of polymeric compositions.

Abstract: The invention relates to an injectable composite material comprising: (a) 28 to 95% by weight of a polypropylene-polyethylene copolymer; (b) 0 to 10% by weight of a flow enhancer; (c) 1 to 20% by weight of an impact modifier; (d) 1 to 20% by weight of a compatibilizing agent; and (e) 3 to 70% by weight of natural fibers, wherein the polypropylene-polyethylene copolymer forms a matrix. It also relates to a method for preparing this composite material as well as to a method for its use for manufacturing parts by injection or by overmolding.

Abstract: The invention relates to oligomers (O2) having a terminal group comprising at least one epoxide function, to their preparation method, to their uses as an additive in a polymeric composition for fluidifying and/or improving stability of said composition.

Abstract: The invention relates to a compound of the following formula (I): to its method for making it and to its uses for preparing a polymer useful for increasing the heat resistance of polymeric compositions.