Patent ID: 8501862

Claim:
A processing aid comprising: at least one heterogeneous PVDF (A), that is a copolymer of VDF and of at least one comonomer of VDF comprising at least 50 of VDF which has a melting point MP (expressed in ° C.)>172-549 m, where m denotes the overall molar percentage of comonomer(s); and at least one interfacial agent (B), wherein (B) is selected from the group consisting of: a) silicones; b) silicone-polyether copolymers; c) aliphatic polyesters, such as polybutylene adipate, polylactic acid and polycaprolactones; d) aromatic polyesters such as the diisobutyl ester of phthalic acid; e) polyethers such as polyether polyols and polyalkylene oxides; f) amine oxides such as octyldimethylamine oxide; g) carboxylic acids such as hydroxybutanedioic acid; and h) fatty acid esters such as sorbitan monolaurate; optionally diluted in a polyolefin (C).