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Process for introducing an additive into a polymer melt

  • US 20070246867A1
  • Filed: 04/20/2006
  • Published: 10/25/2007
  • Est. Priority Date: 04/20/2006
  • Status: Active Grant
First Claim
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1. A process comprising:

  • a) introducing at least one base polymer into an extruder;

    b) heating the base polymer to a temperature sufficient to form a polymer melt;

    c) introducing into the extruder a liquid comprising an additive;

    d) mixing the liquid with the polymer melt in the extruder to form a blend;

    e) vaporizing at least a portion of the liquid and removing it from the polymer melt; and

    f) extruding the additive containing polymer through an extruder die.

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