Modified polymers having controlled transmission rates

  • US 6,221,446 B1
  • Filed: 05/29/1998
  • Issued: 04/24/2001
  • Est. Priority Date: 04/19/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An article of manufacture comprising a shaped article formed by:

  • (a) mixing a functionalized polymer and a channeling agent;

    (b) reacting the polymer and the channeling agent;

    (c) mixing between about 10% to about 70% by weight of an absorption additive into the polymer channeling agent reaction product;

    (d) solidifying the absorption additive entrained polymer-channeling agent reaction product to form a shaped article having a channel morphology in the polymer wherein the channels are composed of the channeling agent and wherein the absorption additive is primarily concentrated within the channeling agent.

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