Process aid for polyolefin and 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 CF 2 =CFCF 3 and a polymerized unit (b) based on at least one selected from the group consisting of monomers represented by CH 2 =CX 11 Y 11 and monomers represented by CF 2 =CX 21 Y 21 .