Modified polymers having controlled transmission rates

  • US 6,124,006 A
  • Filed: 05/29/1998
  • Issued: 09/26/2000
  • 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 at least about 20% by weight of a polymer, between about 10% to about 70% by weight of an absorption additive and at least about 5% by weight of a channeling agent, wherein the percent by weight of each component is based on the total weight of the three components;

    (b) heating the mixture at a temperature at least above the melt point of the channeling agent so that the absorption additive and channeling agent are distributed within the polymer;

    (c) cooling the mixture 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.

View all claims

    Thank you for your feedback