Patent ID: 8039525

Claim:
A process for producing surface-grafted powder particles, comprising the steps of: a) blending powder particles with at least one functionalized grafting monomer to produce a powder impregnated with functionalised grafting monomer, said powder particles being selected from the group consisting of polyamide (PA), copolyamide (coPA), polyether-block-amide (PEBA), polyolefin, and polyester resin particles, have a diameter ranging from 1 μm to 200 μm, followed by; b) irradiating the powder impregnated with functionalized grafting monomer resulting from a) with photons (γ-radiation) or electrons (β-radiation), with a dose ranging from 0.5 to 15 Mrad, optionally followed by c) optionally removing all or some of the grafting monomer that has not been grafted onto the powder during step b).