Abstract: A mixture comprising a cross-linkable thermosetting resin precursor and a polyfluoroalkylsiloxane curable to form a composition comprising a cross-linked thermoset resin containing the polyfluoroalkylsiloxane in a gradient concentration through a cross-section thereof.

Abstract: A mixture comprising a cross-linkable thermosetting resin and a fluorocarbon additive which is curable to form a thermoset resin composition having a gradient concentration of the fluorocarbon additive through a cross-section thereof.

Abstract: A composition of matter formed by melt-blending certain thermoplastic polymers and from about 1.0 to about 7.5 wt. % of a fluorocarbon additive, the additive having a lower by surface energy than that of the polymer; the blending resulting in a cooled admixture having a concentration of fluorocarbon additive through a cross-section of the solid composition lower in the interior thereof and higher at the surfaces thereof.

Abstract: A composition of matter formed by melt-blending certain thermoplastic polymers and from about 1.0 to about 7.5 wt. % of a fluorocarbon additive, the additive having a lower surface energy than that of the polymer; the blending resulting in a cooled admixture having a concentration of fluorocarbon additive through a cross-section of the solid composition lower in the interior thereof and higher at the surfaces thereof.

Abstract: A composition of matter formed by melt-blending a thermoplastic polymer and from about 0.01% to less than about 1.0%, by weight, of an additive comprising a polyfluoroalkylsiloxane, the additive having a lower surface energy than that of the polymer, and the blending resulting in a substantially homogenous admixture of the polymer and the additive. The admixture, upon cooling, results in a solid composition wherein a concentration of the additive through a cross-section of the solid composition is lower in the interior thereof and higher at the surfaces thereof.

Abstract: A composition of matter formed by melt-blending a thermoplastic polymer and from 0.01% to <1% of a fluorocarbon additive, the additive having a lower surface energy than that of the polymer; the blending resulting in a cooled admixture having a concentration of fluorocarbon additive through a cross-section of the solid composition lower in the interior thereof and higher at the surfaces thereof.