High surface area material blends for odor reduction, articles utilizing such blends and methods of using same

1. A method for neutralizing odor contained within the headspace of a product packaging comprising the steps of:

a) formulating a blend comprising metal modified nanoparticles, wherein the metal modified nanoparticles are formed from silica, alumina, or a combination thereof;

b) applying the blend to the inside of a product packaging.

2. The method of claim 1 further including the step of sealing the product packaging so as to maintain the environment inside the product packaging.

3. The method of claim 1 wherein the step of applying is comprised of applying the blend to an insert which is then placed within the product packaging.

4. The method of claim 1 wherein the step of applying is comprised of applying the blend to an inside surface of the product packaging.

5. The method of claim 1 wherein the step of applying is comprised of applying the blend to a portion of the product contained in the product packaging.

6. The method of claim 1 wherein the metal modified nanoparticles comprise at least two differently modified nanoparticles.

7. The method of claim 1 wherein the metal modified nanoparticles have an effective particle diameter of less than about 500 nanometers.

8. The method of claim 3 wherein the metal modified nanoparticles cover greater than about 50% of a surface of the insert.

9. The method of claim 1 wherein the nanoparticles are modified with a metal selected from the group consisting of copper, silver, gold, iron (II), iron (III), manganese, and combinations thereof.

10. The method of claim 1 wherein the metal modified nanoparticles are copper-modified silica nanoparticles.

11. The method of claim 1 wherein the metal modified nanoparticles have a surface area of at least about 200 square meters per gram.

12. The method of claim 1 wherein the metal modified nanoparticles have a surface area of at least about 500 square meters per gram.

13. The method of claim 1 wherein the blend further comprises unmodified nanoparticles.

14. A method for neutralizing odor contained within the headspace of product packaging for a rolled paper product containing a core, comprising the steps of:

a) formulating a blend comprising metal modified nanoparticles;

b) providing a rolled paper product containing a core;

c) applying the blend to the inside surface of the core containing rolled paper product;

d) enclosing the core containing rolled paper product within a product packaging.

15. The method of claim 14 wherein the metal modified nanoparticles comprise at least two differently modified nanoparticles.

16. The method of claim 14 wherein the blend further comprises unmodified nanoparticles.

17. A method for producing a packaged product which neutralizes head space odors contained within the product packaging comprises the steps of:

a) providing a product to be packaged;

b) packaging the product within a packaging material along with a blend comprising metal modified nanoparticles, wherein the metal modified nanoparticles are formed from silica, alumina, or a combination thereof; and

c) enclosing the product within the packaging material.

18. The method of claim 17 , wherein the blend is applied to an insert and the insert is enclosed with the product in the packaging.

19. The method of claim 17 , wherein the packaging material has an inside surface and the blend is applied to the inside surface of the packaging material.

20. The method of claim 17 , wherein the blend is enclosed with the product in the product packaging by being associated with the product.

21. The method of claim 17 , wherein the blend further comprises unmodified nanoparticles.

22. The method of claim 17 , wherein the metal modified nanoparticles comprise at least two differently modified nanoparticles.