Abstract: The present invention relates to a method of manufacturing a part made of a composite material comprising reinforcing fibers embedded in a matrix made of a polymerizable and/or crosslinkable material, wherein:

Abstract: A polymer contains a succinimide ring substituted on the nitrogen atom by a reactive group, where the ring is supported either by the main chain or by a side chain, the polymer resulting from reacting at least one polyolefin with at least one compound containing a maleimide ring substituted on the nitrogen atom by a reactive group with formula —R—(X)n where X is a reactive group, n is a whole positive number equal to 1 or more and R is a residue containing at least one carbon atom. These polymers can be used for the production of co-extruded products, multi-layered materials, surface coatings and polymer alloys.

Abstract: A polymer contains a succinimide ring substituted on the nitrogen atom by a reactive group, where the ring is supported either by the main chain or by a side chain, the polymer resulting from reacting at least one polyolefin with at least one compound containing a maleimide ring substituted on the nitrogen atom by a reactive group with formula —R—(X)n where X is a reactive group, n is a whole positive number equal to 1 or more and R is a residue containing at least one carbon atom. These polymers can be used for the production of co-extruded products, multi-layered materials, surface coatings and polymer alloys.

Abstract: A polymer contains a succinimide ring substituted on the nitrogen atom by a reactive group, where the ring is supported either by the main chain or by a side chain, resulting from reacting at least one polyolefin with at least one compound containing a maleimide ring substituted on the nitrogen atom by a reactive group with formula --R--(X).sub.n where X is a reactive group, n is a whole positive number equal to 1 or more and R is a residue containing at least one carbon atom, and with at least one polyepoxide containing at least two epoxy groups in its molecule. These polymers can be used for the production of co-extruded products, multi-layered materials, surface coatings and polymer alloys.

Abstract: A thermoplastic polymer composition contains at least two distinct polymers, characterized in that it comprises at least one polymer P1 containing at least one reactive function and at least one modified polyolefin P2 containing at least one succinimide ring substituted on the nitrogen by a reactive group, the ring being carried either by the main chain or by a side chain, and optionally at least one third polymer P3 selected from the group formed by polymers and copolymers obtained by polymerisation of one or more olefinic compounds. A mixture of polymers comprises at least one composition as defined above and at least one other polymer P5 which is identical to or different from polymer P3 and optionally at least one other polymer P6 which is identical to or different from polymer P1.

Abstract: Polyimide precursor compositions incorporating at least one compound of fula (1), at least one compound of formula (2), at least one compound of formula (3) and at least one compound of formula (4) ##STR1## in which one of the groups R.sup.3 and R.sup.4 represents a hydrogen atom and the other, in the same way as the groups R.sup.1 and R.sup.2, which can be the same or different, in each case represent a hydrocarbon group having 1 to 16 carbon atoms, m is a number between 5 and 20, n is an integer between 1 and 5 and R.sup.5 represents a hydrogen atom, a halogen atom, a hydrocarbon group with 1 to 16 carbon atoms, or a group of formula R.sup.6 --O-- in which R.sup.6 represents a hydrocarbon group having 1 to 16 carbon atoms. The preferred composition contains 30 to 70% by weight of dry matter of compounds of formulas (1), (2) and (3), in which the groups R.sup.1, R.sup.2 and one of the groups R.sup.3 and R.sup.4 is a methyl or ethyl group and the compound of formula (4) is benzyl alcohol.

Abstract: Adhesive compositions are described comprising at least an arylaliphatic olyimide with ether chain formations, obtained by the polycondensation reaction of a tetracarboxylic aromatic acid or of one of its derivatives with at least two primary diamines, one of these diamines consisting of a polyether chain ending with the two amine functional groups and at least an epoxy resin possessing more than one epoxy group per molecular.These adhesive compositions can be used particularly for the gluing of films of polymers to thin metal sheets.