Method for reducing odor using metal-modified particles
AssigneeKimberly-Clark Worldwide, Inc.
InventorsKevin P. McGrath, Bao Trong Do, John Gavin MacDonald
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Abstract
A method for reducing odor is provided. In one embodiment, the method comprises forming a coordination complex between particles having a positive zeta potential and a transition metal. The method further comprises contacting the coordination complex with an odorous compound, the transition metal providing one or more active sites for capturing the odorous compound. For example, in one embodiment, the particles are formed from alumina-coated silica. In addition, the coordination complex may be formed using a bifunctional chelating agent.
Claims39
A method for reducing odor, said method comprising:
- modifying particles having a positive zeta potential with a transition metal, wherein a bifunctional chelating agent complexes said transition metal to said particles, wherein said bifunctional chelating agent is a catechol that contains one or more iminodiacetic acid groups;
- and
- contacting said modified particles with an odorous compound, said transition metal providing one or more active sites for capturing said odorous compound.
A substrate for reducing odor, said substrate being applied with particles coated with alumina that are modified with a transition metal, said particles having a positive zeta potential, wherein a bifunctional chelating agent complexes said transition metal to said particles, wherein said bifunctional chelating agent is a catechol that contains one or more iminodiacetic acid groups, wherein said transition metal provides one or more active sites for capturing an odorous compound.
A substrate for reducing odor, said substrate being applied with particles coated with alumina that are modified with a transition metal, said particles having a positive zeta potential, wherein a bifunctional chelating agent complexes said transition metal to said particles, wherein said bifunctional chelating agent contains a dye, wherein said transition metal provides one or more active sites for capturing an odorous compound.
Dependencies are inferred from the claim text.