Stable silver colloids and silica-coated silver colloids,...

Details Stable silver colloids and silica-coated silver colloids,... Stable silver colloids and silica-coated silver colloids,...

B - Operations, Transporting

01

J

B01J 13/00 (2006.01) A01N 59/16 (2006.01) A61K 33/38 (2006.01) B22F 9/24 (2006.01) C01G 5/00 (2006.01)

Patent

CA 2735816

Methods for preparing silver colloids and silica-coated silver colloids are disclosed. The silver colloids may be prepared by heating a silver-containing solution, combining the heated silver- containing solution with an acid solution, and cooling the combined solutions to form a silver colloid containing silver particles. The silver particles in the silver colloid can further be coated with silica. A method for preparing antimicrobial coatings is also disclosed.

L'invention concerne des procédés de préparation de colloïdes d'argent et de colloïdes d'argent recouverts de silice. Les colloïdes d'argent peuvent être préparés par le chauffage d'une solution contenant de l'argent, la combinaison de la solution chauffée contenant de l'argent avec une solution d'acide, et le refroidissement des solutions combinées pour former un colloïde d'argent contenant des particules d'argent. Les particules d'argent dans le colloïde d'argent peuvent en outre être recouvertes de silice. Un procédé de préparation de revêtements antimicrobiens est également décrit.

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