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Desiccant entrained polymer

  • US 7,005,459 B2
  • Filed: 11/26/2003
  • Issued: 02/28/2006
  • Est. Priority Date: 03/05/1996
  • Status: Expired due to Fees
First Claim
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1. A composition comprising at least three components:

  • a polymer base material wherein the polymer base is a thermoplastic;

    a desiccating agent;

    a channeling agent, wherein the channeling agent is a material that is melted, during processing of the composition, and is a material that forms passages throughout a polymer base material, after processing of the composition; and

    wherein;

    a) the affinity between the material that is the channeling agent and the desiccating agent is greater than between the polymer base material and the desiccating agent;

    b) the desiccating agent is entrained in the polymer base material;

    c) the polymer base material is a material, prior to processing of the composition, that more greatly resists diffusion of moisture than does the material that is the channeling agent;

    d) the passages transmit moisture to the entrained desiccating agent in the polymer base material; and

    e) the composition has at least three phases.

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