| US 7,578,997 B2 | ||
| Metal ion modified high surface area materials for odor removal and control | ||
| John Gavin MacDonald, Decatur, Ga. (US) | ||
| Assigned to Kimberly-Clark Worldwide, Inc., Neenah, Wis. (US) | ||
| Filed on Apr. 30, 2002, as Appl. No. 10/137,052. | ||
| Prior Publication US 2003/0203009 A1, Oct. 30, 2003 | ||
| Int. Cl. A01L 9/01 (2006.01) | ||
| U.S. Cl. 424—76.1 [424/76.2; 424/76.21; 424/76.3; 424/76.4; 424/76.5; 424/618; 424/630; 424/835; 424/641; 424/646; 424/647; 424/648; 424/649; 424/691; 424/692; 424/400; 977/773; 977/810; 977/811; 977/903; 977/904] | 19 Claims |
| 1. A composition for neutralizing odor, comprising:
a nanoparticle comprising a diameter of less than 500 nanometers, a surface area of at least about 500 square meters/gram,
and a first Zeta Potential of about −1 to −50 millivolts, the nanoparticle comprising silica, titanium dioxide, gold, zinc
oxide, polystyrene, or combinations thereof; and
at least one metal ion adsorbed onto the nanoparticle, the at least one metal ion selected from the group consisting of a
copper ion, a silver ion, a gold ion, and combinations thereof;
wherein at least one of the nanoparticle and the adsorbed metal ion is capable of binding at least one odorous compound.
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