▎ 摘　　要

NOVELTY - A masterbatch composition comprises 70-99 pts. wt. highly branched polyethylene and 1-30 pts. wt. carbon nanotubes or graphene. USE - Masterbatch composition. ADVANTAGE - The masterbatch composition has low density, large curvature, and high impact resistance at low temperature. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for processing of masterbatch composition which involves adding the raw material components to the mixer, mixing for 3-15 minutes at 30-50 rpm, feeding mixed raw materials into twin-screw extrusion granulator, and controlling the temperature at 90-160 degrees C for extrusion granulation.