Extrudable thermoplastic compositions

This invention relates to thermoplastic polymers, such as polyolefins or other difficult to extrude polymers, having improved extrusion characteristics. In another aspect it relates to the use of a dendritic material to improve the extrusion characteristics of such thermoplastic polymers, particularly in combination with other process additives. In a still further aspect it relates to the use of a dendritic material in a thermoplastic polymer further comprising an antiblock agent. An extrudable composition comprising a major amount of a thermoplastic host polymer, a fluorocarbon polymer and a dendritic material wherein the extrudate demonstrates reduced levels of surface defects.