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Process for preparing antimicrobial plastic bodies having improved long-time performance

  • US 8,075,823 B2
  • Filed: 04/24/2007
  • Issued: 12/13/2011
  • Est. Priority Date: 07/30/1999
  • Status: Expired due to Term
First Claim
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1. A process for preparing an antimicrobial plastic body comprising colloidal metal, one or several polymer materials and one or several inorganic additives, said process comprising the steps of(A) preparing a metal colloid solution comprising colloidal metal and organic stability protective agent, wherein the colloidal metal consists of metal particles,(B) treating at least one of the one or several inorganic additives with the metal colloid solution to form a suspension,(C) removing organic stability protective agent from the suspension of step B) to obtain a solid, drying the solid, and adding the one or several polymer materials to obtain a precursor, and(D) molding the precursor obtained in step (C) to form the antimicrobial plastic body.

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