Bactericidal silicon dioxide doped with silver

Details Bactericidal silicon dioxide doped with silver Bactericidal silicon dioxide doped with silver

2005-03-29

2005-03-29

Pak, John (Department: 1616)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

C424S417000, C424S618000, C424S619000, C424S724000, C423S278000, C423S335000, C423S336000, C423S337000, C423S592100, C423S606000, C423S608000, C423S618000, C423S625000, C514S951000

Reexamination Certificate

active

06872402

ABSTRACT:
Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/gas mixture to react in a flame. The resulting pyrogenic silicas doped with silver or silver oxide are separated from the gas stream. The pyrogenic silica doped with silver or silver oxide by means of an aerosol can be used as a bactericidal filler.

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Akifumi et al., “Optical Waveguides and Manufacture Thereof”, STN Database Accession No. 129:60395 CA XP002150667 and JP 10 133043 A (Hitachi Cable, Ltd., Japan) May 22, 1998.
Formenti et al., “Preparation in a Hydrogen-Oxygen Flame of Ultrafine Metal Oxide Particles”, J. of Colloid and Interface Science, vol. 39, No. 1 (Apr. 1972), pp. 79-89.
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