Extrudable thermoplastic hydrocarbon polymer composition
AssigneeMinnesota Mining and Manufacturing Company
InventorsDenis Duchesne, Bryce V. Johnson
Life of this patent
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Abstract
An extrudable composition comprising thermoplastic hydrocarbon polymer, poly(oxyalkylene) polymer and fluorocarbon polymer. The poly(oxyalkylene) polymer and the fluorocarbon polymer are present in the composition in such relative proportions and concentrations as to reduce the occurrence of melt defects during the extrusion of said hydrocarbon polymer composition.
Claims16
An extrudable composition comprising
- (A) thermoplastic olefin polymer, as the major or predominant component of the composition
- (B) poly(oxyalkylene) polymer, and
- (C) fluorocarbon polymer where the weight ratio of said fluorocarbon polymer to said poly(oxyalkylene) polymer is in the range of 1/1 to 1/10, the concentration of said fluorocarbon polymer in said composition is 0.005 to 0.2 weight percent, and the concentration of said poly(oxyalkylene) polymer is 0.01 to 0.8 weight percent based on the weight of said extrudable composition.
The method of reducing melt defects in extruded olefin polymers which comprises admixing with said olefin polymer, fluorocarbon polymer and poly(oxyalkylene) polymer in amounts such that the ratio of the weight of said fluorocarbon polymer to the weight of said poly(oxyalkylene) polymer is in the range of 1/1 to 1/10, and the concentration of said poly(oxyalkylene) polymer is 0.1 to 0.8 weight percent, and the concentration of said fluorocarbon polymer is 0.005 to 0.2 weight percent based on the total weight of the hydrocarbon polymer, fluorocarbon polymer and poly(oxyalkylene) polymer.
Dependencies are inferred from the claim text.