Odor control composition
View Patent ↗An odor control composition that includes a silicon oxide compound and a transition metal in an amount of from about 0.2 wt. % to about 10 wt. % of the odor control composition is provided. The silicon oxide compound is formed from a silicon source and a template (e.g., cyclodextrin template).
1. A substrate that contains an odor control composition in an amount of from about 0.5 wt. % to about 25 wt. % of the substrate, wherein said odor control composition comprises a silicon oxide compound and a transition metal that constitutes from about 0.2 wt. % to about 10 wt. % of said odor control composition, wherein said silicon oxide compound is formed from a silicon source and a cyclodextrin template.
2. A substrate as defined in claim 1 , wherein said silicon source is selected from the group consisting of alkoxy silanes, silicone halides, and combinations thereof.
3. A substrate as defined in claim 1 , wherein said silicon source is selected from the group consisting of tetraethoxy silanes, tetrapropoxy silanes, tetrabutoxy silanes, and combinations thereof.
4. A substrate as defined in claim 1 , wherein said cyclodextrin is selected from the group consisting of α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, δ-cyclodextrin, derivatives thereof, and combinations thereof.
5. A substrate as defined in claim 1 , wherein said transition metal is selected from the group consisting of scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, silver, and combinations thereof.
6. A substrate as defined in claim 1 , wherein said silicon oxide compound has a B.E.T. surface area of from about 100 square meters per gram to about 1500 square meters per gram.
7. A substrate as defined in claim 1 , wherein said silicon oxide compound has a B.E.T. surface area of from about 500 square meters per gram to about 1000 square meters per gram.
8. A substrate as defined in claim 1 , wherein said silicon oxide compound has a median pore diameter of less than about 20 nanometers.
9. A substrate as defined in claim 1 , wherein said silicon oxide compound has a median pore diameter of less than about 10 nanometers.
10. A substrate as defined in claim 1 , wherein said transition metal constitutes from about 0.5 wt. % to about 5 wt. % of said odor control composition.
11. A substrate as defined in claim 1 , wherein said odor control composition constitutes from about 0.5 wt. % to about 25 wt. % of the substrate.
12. A substrate as defined in claim 1 , wherein said odor control composition constitutes from about 1 wt. % to about 10 wt. % of the substrate.
13. A substrate as defined in claim 1 , wherein said silicon oxide compound is a metal silicate, said transition metal forming at least a portion of said metal silicate.
14. A substrate as defined in claim 1 , wherein said silicon oxide compound includes approximately 100 wt. % silica.
15. A substrate as defined in claim 1 , wherein said silicon oxide compound has a B.E.T. surface area of from about 400 square meters per gram to about 1200 square meters per gram.
16. A substrate as defined in claim 1 , wherein said silicone oxide constitutes from about 90 wt. % to about 99.8 wt. % of said odor control composition.
17. A substrate as defined in claim 1 , wherein said substrate is selected from the group consisting of films, nonwoven fabrics, woven fabrics, knit fabrics, paper and combinations thereof.
18. A substrate as defined in claim 17 , wherein said substrate is an absorbent web containing cellulosic fibers.
19. A substrate as defined in claim 17 , wherein said substrate is a nonwoven web selected from the group consisting of spunbonded webs, meltblown webs, bonded carded webs, airlaid webs, and combinations thereof.
20. A nonwoven web that contains an odor control composition in an amount of from about 0.5 wt. % to about 25 wt. % of the nonwoven web, wherein said odor control composition comprises a silicon oxide compound and a transition metal that constitutes from about 0.2 wt. % to about 10 wt. % of said odor control composition, wherein said silicon oxide compound is formed from a silicon source and a template, wherein said silicon oxide compound has a median pore diameter of less than about 20 nanometers.
21. A nonwoven web as defined in claim 20 , wherein said silicon oxide compound is a metal silicate, said transition metal forming at least a portion of said metal silicate.
22. A nonwoven web as defined in claim 20 , wherein said silicon oxide compound includes approximately 100 wt. % silica.
23. A nonwoven web as defined in claim 20 , wherein said silicon source is selected from the group consisting of alkoxy silanes, silicone halides, and combinations thereof.
24. A nonwoven web as defined in claim 20 , wherein said silicon source is selected from the group consisting of tetraethoxy silanes, tetrapropoxy silanes, tetrabutoxy silanes, and combinations thereof.
25. A nonwoven web as defined in claim 20 , wherein said template is a cyclodextrin selected from the group consisting of α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, δ-cyclodextrin, derivatives thereof, and combinations thereof.
26. A nonwoven web as defined in claim 20 , wherein said transition metal is selected from the group consisting of scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, silver, and combinations thereof.
27. A nonwoven web as defined in claim 20 , wherein said silicon oxide compound has a B.E.T. surface area of from about 100 square meters per gram to about 1500 square meters per gram.
28. A nonwoven web as defined in claim 20 , wherein said silicon oxide compound has a B.E.T. surface area of from about 400 square meters per gram to about 1200 square meters per gram.
29. A nonwoven web as defined in claim 20 , wherein said silicon oxide compound has a B.E.T. surface area of from about 500 square meters per gram to about 1000 square meters per gram.
30. A nonwoven web as defined in claim 20 , wherein said silicon oxide compound has a median pore diameter of less than about 10 nanometers.
31. A nonwoven web as defined in claim 20 , wherein said transition metal constitutes from about 0.5 wt. % to about 5 wt. % of said odor control composition.
32. A nonwoven web as defined in claim 20 , wherein said odor control composition constitutes from about 0.5 wt. % to about 25 wt. % of said nonwoven web.
33. A nonwoven web as defined in claim 20 , wherein said odor control composition constitutes from about 1 wt. % to about 10 wt. % of said nonwoven web.
34. A nonwoven web as defined in claim 20 , wherein said silicone oxide constitutes from about 90 wt. % to about 99.8 wt. % of said odor control composition.
35. A nonwoven web as defined in claim 20 , wherein said nonwoven web is a spunbonded web, a meltblown web, or a combination thereof.
36. A nonwoven web as defined in claim 20 , wherein said nonwoven web is an absorbent nonwoven web containing cellulosic fibers.