Blow molding compositions based on branched polyamides and uses thereof

Abstract

The present invention relates to a composition for blow-molding or extrusion, in particular blow-molding, comprising by weight: a) from 88 to 99.95%, more particularly from 89 to 99.9%, in particular from 93 to 99.9%, of at least one semicrystalline aliphatic polyamide having a carbon number per nitrogen atom of greater than or equal to 7, more particularly greater than or equal to 8, b) from 0.05% to 10%, more particularly from 0.1% to 9%, in particular from 0.1% to 5% by weight of at least one branching agent chosen from polyepoxides, polyanhydrides and polyisocyanates, more particularly polymaleic anhydrides and polyepoxides, c) from 0 to 2% of at least one additive, more particularly 10 from 0.1 to 2%, the composition having, after compounding, a melt viscosity of from 10 000 to 300 000 Pa·s, preferably from 15 000 to 220 000 Pa·s, as measured in plane-plane geometry according to ISO standard 6721-10:2015 at a temperature of 250° C., a frequency of 0.292 rad/s and a deformation of 2%, the sum of the constituents a)+b)+c) making 100% by weight.

Dependencies are inferred from the claim text.