Patent application number | Description | Published |
20100183837 | USE OF A POLYAMIDE BASED COMPOSITION FOR FLEXIBLE PIPES FOR CONVEYING CRUDE OIL OR GAS AND FLEXIBLE PIPE USING SUCH COMPOSITION - The invention relates to the use of a composition that contains from 70 to 91 wt % of at least one semi-crystalline polyamide, from 5 to 25 wt % of a polyolefin having an epoxy, anhydride or acid function introduced by grafting or copolymerization, and from 4 to 20 wt % of a plasticizer in the production of flexible pipes used in the exploitation of crude oil or gas deposits under the sea that comprises at least one layer obtained from such a composition. | 07-22-2010 |
20100189946 | COMPOSITE MATERIAL INCLUDING NANOTUBES DISPERSED IN A FLUORINATED POLYMER MATRIX - The invention relates to a composite material including nanotubes of a chemical element selected from the compounds of the elements of columns IIIa, IVa and Va of the periodic table, dispersed in a polymer matrix including (a) at least one fluorinated homo- or copolymer and (b) at least one fluorinated homo- or copolymer grafted with at least one carboxylic polar function. The invention also relates to the use of the composite material and to the use of at least one fluorinated homo- or copolymer grafted with at least one carboxylic polar function for increasing the tensile strength of a composite material containing the above nanotubes dispersed in a fluorinated polymer matrix. | 07-29-2010 |
20100203328 | METHOD FOR IMPREGNATING CONTINUOUS FIBRES WITH A COMPOSITE POLYMER MATRIX CONTAINING A THERMOPLASTIC POLYMER - The invention relates to a method for the impregnation of continuous fibers, that comprises coating said fibers with a polymer matrix containing at least one thermoplastic semicrystalline polymer having a glass transition temperature (T | 08-12-2010 |
20110166278 | METHOD FOR IMPREGNATING CONTINUOUS FIBRES WITH A COMPOSITE POLYMER MATRIX CONTAINING A GRAFTED FLUORINATED POLYMER - The invention relates to a method for the impregnation of continuous fibers that comprises coating said fibers with a polymer matrix containing: (a) at least one fluorinated polymer grafted with at least one carboxylic polar function and (b) optionally at least one fluorinated nongrafted polymer. The invention also relates to the composite fibers that can be obtained by said method and to the use thereof. | 07-07-2011 |
20110214509 | METHOD FOR PREDETERMINING THE FATIGUE LIFE OF POLYMER COMPOSITION - The invention relates to a method for evaluating the fatigue life of a polymer composition, including the following steps: i) providing a polymer composition; ii) manufacturing a plurality of axisymmetric test tubes cut from said composition; iii) subjecting said test tubes to a uniaxial traction fatigue test including a plurality of loading and unloading cycles for the test tube, the geometry of the test tube making it possible to subject the material to triaxial stresses, in the area of the test tube cut, simulating the stress conditions for the pressure sheath of a flexible pipe, particularly for off-shore use; and iv) predetermining the number of cycles until the rupture of said polymer composition. The invention is related to the use of said polymer composition selected through the predetermining method for manufacturing pipes or conduits to convey a pressurized and/or corrosive fluid. | 09-08-2011 |
20110251331 | USE OF NANOTUBES, ESPECIALLY CARBON NANOTUBES, TO IMPROVE THE HIGH TEMPERATURE MECHANICAL PROPERTIES OF A POLYMERIC MATRIX - The present invention pertains to the use of nanotubes of at least one chemical element chosen from elements of groups IHa, IVa and Va of the periodic table to improve the high temperature mechanical properties of a polymeric matrix comprising at least one semi-crystalline thermoplastic polymer. | 10-13-2011 |
20110288194 | POLYAMIDE AND BIORESOURCED REINFORCEMENT COMPOSITIONS HAVING IMPROVED MECHANICAL PROPERTIES - One subject of the present invention is a composition that combines at least one polyamide having at least one MXD entity, MXD denoting meta-xylylenediamine or a mixture of meta-xylylenediamine and of para-xylylenediamine, with a bioresourced reinforcement. The invention also relates to the conversion of these compositions, by injection moulding or extrusion, into objects that have good mechanical properties, said objects corresponding to technical application specifications such as may be found, for example, in the automotive industry, construction, sport and in electrical or electronic fields. | 11-24-2011 |
20140256850 | COMPOSITE MATERIAL VIA IN-SITU POLYMERIZATION OF THERMOPLASTIC (METH)ACRYLIC RESINS AND ITS USE - The present invention relates to a composite material obtained by in situ polymerization of a thermoplastic resin with a fibrous material. More particularly the present invention relates to a polymeric composite material obtained by in-situ polymerization of a thermoplastic (meth) acrylic resin and a fibrous material containing long fibers and its use, a process for making such a composite material and manufactured mechanical or structured part or article comprising this polymeric composite material. | 09-11-2014 |
20140316063 | THERMOPLASTIC COMPOSITE MATERIAL REINFORCED WITH SYNTHETIC FIBERS AND MANUFACTURING PROCESS - A method for producing a composite material, including an assembly of one or a plurality of synthetic reinforcement fibres, impregnated with at least one thermoplastic polymer having a vitreous transition temperature Tg greater than or equal to 80° C. including: i) a step of impregnating said assembly with a precursor composition in the molten state and including: a) at least one prepolymer P(X)n of said thermoplastic polymer, including a molecular chain P having, at the ends n thereof, identical reactive functions X, said prepolymer having a semi-aromatic and/or semi-cycloaliphatic structure, b) at least one chain extender including two identical functions Y, which are reactive with at least one of said functions X; ii) a step of polymerisation by mass (poly)addition, in the molten state, of said prepolymer with said chain extender, with said thermoplastic polymer of the thermoplastic matrix being the result of said polymerisation by mass polyaddition. | 10-23-2014 |