Masterbatch composition based on fluoropolymer and its use for the extrusion of polyolefins

摘要

Master batch (A) comprises (wt.%): a mixture (1-50) of a fluorinated polymer (I) and interface agent (II); and polyolefin (III) (99-50) (where the two components (I) and (II) are thoroughly mixed at a temperature in which one of the two components is in melted state in its mass or on its surface and then the obtained mixture is mixed with (III)). Independent claims are also included for: (1) use of (A) as processing aid in the process of extrusion of polyolefin (IV); and (2) preparation of (A).