Extrusion agent, useful to reduce/eliminate surface defects appear during thermoplastic resin extrusion, comprises at least heterogeneous polyvinylidene fluoride, at least interface agent, which are optionally diluted in polyolefin

摘要

Extrusion agent comprises at least a heterogeneous polyvinylidene fluoride (PVDF) (A) i.e. a copolymer of the vinyl fluoride (VDF) and at least a comonomer of the VDF, and at least an interface agent, which are optionally diluted in a polyolefin, where the VDF is present at least 50 wt.%, preferably 75 wt.% and having a melting point (Tf) (expressed in [deg]C) of greater than 172-549 m, preferably greater than 1.1x(172-549 m). The m indicates the total molar percentage of comonomers. An independent claim is included for a process of extrusion of a thermoplastic resin in the presence of the extrusion agent or (A).