Processing aid for polyolefins and a polyolefin composition

摘要

The present invention provides a processing aid for polyolefins capable of improving the processability in processing polyolefins at a temperature lower than 220° C. and a high shear rate. The processing aid for polyolefins is intended to be used in processing a polyolefin at a temperature lower than 220° C., and contains a fluoropolymer that includes a polymerized unit (a) based on CF₂═CFCF₃ and a polymerized unit, (b) based on at least one selected from the group consisting of monomers represented by CH₂═CX¹¹Y¹¹ and monomers represented by CF₂═CX²¹Y²¹.