Substrates comprising anti-microbial compositions and methods of making and using the same

• US 8,394,420 B2
• Filed: 09/09/2008
• Issued: 03/12/2013
• Est. Priority Date: 11/03/2005
• Status: Active Grant

• Current Assignee: K2 Concepts, Inc.
• Original Assignee: K2 Concepts, Inc.
• Inventors: Kepner, Bryan, Mintz, Eric
• Primary Examiner(s): Soroush, Ali
• Application Number:
  US12/206,806
• Publication Number:
  US 20090001012A1
• Time in Patent Office: 1,645 Days
• Field of Search: 424/617, 424/618, 68/17
• US Class Current: 424/617
• CPC Class Codes: A01N 25/34 Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
• CPC Class Codes: A01N 59/16 Heavy metals; Compounds thereof
• CPC Class Codes: A61L 2/238 Metals or alloys, e.g. oligodynamic metals
• CPC Class Codes: A61L 9/00 Disinfection, sterilisation or deodorisation of air body deodorants A61Q15/00; purifying air by respirators A62B, A62D9/00; separating dispersed particles from gases or vapours B01D45/00 - B01D51/00, B03C3/00; chemical or biological purification of waste gases B01D53/34; production of ozone C01B13/10; air-conditioning systems incorporating sterilisation F24F3/16, F24F8/20
• CPC Class Codes: C02F 1/505 by oligodynamic treatment
• CPC Class Codes: C02F 5/10 using organic substances
• CPC Class Codes: C02F 5/14 containing phosphorus

Abstract

Anti-microbial compositions and devices comprising anti-microbial compositions are disclosed. Methods of making and using anti-microbial compositions and devices are also disclosed.

Claims

1. A fluid treatment device for controlling microbial growth in air or potable water systems, said device comprising:

a porous substrate selected from paper, foam, wallboard, wallpaper, ceiling tile, fabric, or fibers; and

fluid treatment media (i) on an outer surface of the porous substrate, (ii) within the porous substrate, or (iii) both (i) and (ii), said fluid treatment media comprising a physical mixture of;

a first set of particles or beads comprising an anti-microbial component coating on a support material with the anti-microbial component coating comprising one or more coating layers on said support material, said anti-microbial component comprising a transition metal, a transition metal oxide, a transition metal salt, or a combination thereof; and

a second set of particles or beads comprising a scale inhibitor comprising an inorganic phosphate, a phosphonate, a polycarboxylate, or a combination thereof.

2. The device of claim 1, wherein the transition metal is selected from the group consisting of Sc, Ti, Sn, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Rf, Db, Sg, Bh, Hs, Mt, Uun, Uuu, Uub, and combinations thereof.

3. The device of claim 2, wherein the support material is selected from the group consisting of activated carbon, alumina, silica, titanium oxide, tin oxide, lanthanum oxide, copper oxide, vanadium oxide, manganese oxide, nickel oxide, iron oxide, zinc oxide, zirconium oxide, magnesium oxide thorium oxide, polyethylene, polypropylene, polyvinylchloride, polystyrene and polyethylene terephthalate.

4. The device of claim 3, wherein the support material is selected from the group consisting of alumina and polyethylene terephthalate.

5. The device of claim 4, wherein the transition metal is selected from the group consisting of Ag, Cu, Zn, and combinations thereof.

6. The device of claim 5, wherein the transition metal is Ag and the support material is alumina.

7. The device of claim 6, wherein said second set of particles or beads comprise an inorganic phosphate.

8. The device of claim 1, wherein said fluid treatment media comprises a physical mixture of (i) said first set of particles or beads, (ii) said second set of particles or beads, and (iii) a third set of particles or beads comprising at least one disinfectant/biofilm removal material comprising sodium percarbonate.

9. The device of claim 1, wherein said porous substrate comprises paper, a woven fabric or a nonwoven fabric.

10. The device of claim 9, wherein said porous substrate comprises a nonwoven fabric comprising cellulosic fibers.

11. A fluid treatment device for controlling microbial growth in air or potable water systems, said device comprising:

a porous sheet-like substrate having opposite first and second major surfaces and an outer edge extending (i) around an outer periphery of said porous sheet-like substrate and (ii) separating said opposite first and second major surfaces from one another; and

fluid treatment media (i) on an outer surface of the porous sheet-like substrate, (ii) within the porous sheet-like substrate, or (iii) both (i) and (ii), said fluid treatment media comprising;

a first set of particles or beads comprising an anti-microbial component coating on a particulate support material with the anti-microbial component coating comprising one or more coating layers on said particulate support material, said anti-microbial component comprising a transition metal, a transition metal oxide, a transition metal salt, or a combination thereof;

wherein at least a portion of each of said first and second major surfaces is exposed, and each of said opposite first and second major surfaces is free of an adhesive coating.

12. The device of claim 11, wherein the transition metal is Ag and the particulate support material is alumina.

13. The device of claim 11, wherein said fluid treatment media further comprises a second set of particles or beads comprising a scale inhibitor comprising an inorganic phosphate, a phosphonate, a polycarboxylate, or a combination thereof.

14. The device of claim 13, wherein said second set of particles or beads comprise polyphosphate glass particles.

15. The device of claim 11, wherein said porous sheet-like substrate comprises a nonwoven fabric comprising cellulosic fibers.

16. The device of claim 15, wherein said nonwoven fabric further comprises microglass fibers.

17. The device of claim 16, wherein said nonwoven fabric further comprises an inorganic or organic binder material.

18. A fluid treatment device for controlling microbial growth in air or potable water systems, said device comprising:

a porous substrate comprising paper or a nonwoven substrate; and

fluid treatment media (i) on an outer surface of the porous substrate, (ii) within the porous substrate, or (iii) both (i) and (ii), said fluid treatment media comprising a physical mixture of;

a first set of particles or beads comprising an anti-microbial component coating on a support material with the anti-microbial component coating comprising one or more coating layers on said support material, said anti-microbial component comprising silver and said support material comprising alumina; and

a second set of particles or beads comprising a scale inhibitor comprising an inorganic glassy polyphosphate.

19. The device of claim 18, wherein said paper or nonwoven substrate comprises cellulosic fibers.

20. The device of claim 18, wherein said device has a flow-through construction so that a fluid may flow through said device by entering a first major outer surface of said paper or nonwoven substrate and exiting a second major outer surface of said paper or nonwoven substrate opposite the first major outer surface.