Patent ID: 8722761

Claim:
A melt processible thermoplastic composition, comprising: a major proportion of a base polymer comprising a first meltprocessible thermoplastic polymer having a first Fedor's solubility parameter and a first viscosity; and a combination of a carrier polymer and a surface modifying additive, the carrier polymer comprising a second melt processible thermoplastic polymer which has a second solubility parameter that is at least 2.5 (J/cm 3 ) 1/2 lower than the first solubility parameter, and a second viscosity, the carrier polymer being adhered to the surface modifying additive, and wherein the first viscosity is at least 25 times the second viscosity, as measured by a Cone and Plate viscometer at 190° C., at 6.283 rad s′ 1 and at 500 s; and wherein the base polymer is polyvinyl chloride.