Patent ID: 6930165

Claim:
Modified polyamide comprising at least the following two compounds which are melt-blended together: Compound A: a polyamide comprising repeating units whose formulae are selected from the group consisting of formulae (I) and (II) below: —[NH—R 1 —NH—OC—R 2 —CO]— (I) —[NH—R 3 —CO]— (II) the radicals R 1 , R 2 and R 3 being hydrocarbon-based radicals optionally comprising hetero atoms Compound B: a polyamide macromolecular compound comprising starburst or H macro-molecular chains, which may be obtained by a process selected from the group consisting of the following two processes: Process A: copolymerization of a lactam and/or of an amino acid with a multifunctional compound and optionally bifunctional or mono-functional compounds, Process B: melt-blending of a multifunctional compound and a polyamide obtained by polycondensation of lactams and/or of amino acids, the multifunctional compound comprising at least three reactive functions selected from the group consisting of amines, carboxylic acids and derivatives thereof, the reactive functions being identical, the equivalent molar concentration of reactive functions of the multifunctional compound in compound B being greater than 4%.