Thermoplastic polymers with dispersed fluorocarbon additives
AssigneeRES Development Corporation
InventorsRobert E. Sterling, Eugene P. Goldberg
Life of this patent
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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.
Claims14
A composition of matter consisting essentially of a thermoplastic polymer and a perfluorinated hydrocarbon-polyether additive formed by melt-blending said thermoplastic polymer and from about 0.01% to less than 1%, by weight, of said perfluorinated hydrocarbon-polyether additive selected from the group consisting of an oil, gum, grease and mixtures thereof, said additive having a lower surface energy than that of said polymer;
- said blending resulting in a substantially homogeneous admixture of said polymer and said additive;
- said admixture, upon cooling, resulting in a solid thermoplastic composition wherein the concentration of said additive through a cross-section of said solid thermoplastic composition is lower in the interior thereof and higher at the surfaces thereof.
A composition of matter consisting essentially of a thermoplastic polymer and a perfluorinated hydrocarbon-polyether additive formed by melt-blending said thermoplastic polymer comprising said polyolefin or polyolefin copolymer and from about 0.01% to less than 1%, by weight, of a perfluorinated hydrocarbonpolyether additive selected from the group consisting of an oil, gum, grease and mixtures thereof, said additive having a lower surface energy than that of said polymer;
- said melt-blending resulting in a substantially homogeneous admixture of said polymer and said additive;
- said admixture, upon cooling, resulting in a solid thermoplastic composition wherein the concentration of said additive through a cross-section of said solid thermoplastic composition is lower in the interior thereof and higher at the surfaces thereof.
Dependencies are inferred from the claim text.