Patent ID: 7323241

Claim:
A precursor article of a composite material comprising a polymeric matrix and at least one reinforcing yarn and/or reinforcing fibers, said article comprising at least one reinforcing yarn and/or reinforcing fibers and at least one polymeric matrix yarn and/or polymeric matrix fibers, wherein: said reinforcing yarn and/or said reinforcing fibers are made of reinforcing material and optionally comprise a part made of thermoplastic polyamide, said polymeric matrix yarn and/or said polymeric matrix fibers are made of thermoplastic polyamide, and wherein: said thermoplastic polyamide of said reinforcing yarn and/or of said reinforcing fibers and/or of said polymeric matrix yarn and/or of said polymeric matrix fibers comprises at least one polyamide possessing a star structure comprising: star macromolecular chains comprising one or more cores and at least three polyamide branches or three polyamide segments bonded to a core, and optionally, linear polyamide macromolecular chains.