| abstract |
The polymer composition includes a non-fluorinated thermoplastic polymer and a small amount of fluoropolymer combined with the non-fluorinated polymer. Also disclosed is a polymer processing additive composition comprising a fluoropolymer and a polymer processing additive synergist. The fluoropolymer comprises a dyad represented by the formula —CF 2 —CF (R) —CH (R ′) — CF (R ″) — in the range of about 23 mol% to about 50 mol%. Independently, —CF 3, —Rf, or —ORf, each R ′ and R ″ is independently H, F, CF 3, or —Rf, and each Rf is independently 1-12. And a perfluoroalkyl group optionally having one or more —O— groups interposed therebetween. A method for reducing melt defects during polymer extrusion is also disclosed. |