Polymers containing antimicrobial agents and methods for making and using same

• US 5,906,825 A
• Filed: 10/20/1997
• Issued: 05/25/1999
• Est. Priority Date: 10/20/1997
• Status: Expired due to Term

• Current Assignee: Magellan Companies, Inc.
• Original Assignee: Magellan Companies, Inc.
• Inventors: Seabrook, Samuel G. Jr., Craver, William E. III
• Primary Examiner(s): Page, Thurman K.
• Application Number:
  US08/953,908
• Time in Patent Office: 582 Days
• Field of Search: 424/404, 424/405, 424/409
• US Class Current: 424/404
• CPC Class Codes: A01N 25/10 Macromolecular compounds
• 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: A23B 4/20 Organic compounds; Microorganisms; Enzymes
• CPC Class Codes: A23L 3/3472 Compounds of undetermined constitution obtained from animals or plants
• CPC Class Codes: A23L 33/105 Plant extracts, their artificial duplicates or their derivatives

Abstract

Polymeric compositions containing antimicrobial agents and methods for making and using same are provided. The antimicrobial agents include phytochemicals and phytonutrients such as naturally occurring extracts from plants and herbs and other chemical disinfectants safe for use on food-contact surfaces. Chemical releasers can be added to the compositions for causing the release of the antimicrobial agents. The chemical releasers include citric acid extract. A blend of antimicrobial agents can be included in the composition for destroying and inhibiting the growth of a wide variety of different microorganisms including bacteria, viruses, and fungi.

Claims

1. A polymeric material containing antimicrobial agents for inhibiting the growth of microorganisms in close proximity to said polymeric material, said polymeric material comprising:

a polymeric article, said polymeric article being made from a polymer selected from the group consisting of silicones, polystyrenes, polyacrylates, polyurethanes, polyalkylenes, polyolefins, polyvinyls, synthetic rubbers, latex, N-propylsilicate and mixtures thereof;

a release agent; and

at least one biocide dispersed within said polymeric article, said biocide being present in said polymeric article in an amount sufficient to inhibit the growth of microorganisms that come in contact with said polymeric article, said release agent being present to control release of at least one biocide from said polymeric article, said biocide comprising a photochemical derived from a naturally occurring source, wherein said photochemical is selected from the group consisting of capsicum, grapefruit seed extract, lemon grass oil, tea tree oil, citric acid, and mixtures thereof.

2. A polymeric article as defined in claim 1, wherein said release agent comprises said biocide.

3. A polymeric material as defined in claim 1, wherein said release agent comprises citric acid.

4. A polymeric material as defined in claim 1, wherein said release absent comprises Vitamin E.

5. A polymeric material as defined in claim 1, wherein said biocide is contained in a liquid carrier.

6. A polymeric material as defined in claim 5, wherein said liquid carrier comprises an epoxidized vegetable oil or propylene glycol.

7. A polymeric material as defined in claim 1, wherein said at least one biocide is present in said polymeric substrate in an amount up to about 100,000 ppm.

8. A polymeric material as defined in claim 1, wherein said at least one biocide is present within said polymeric substrate in an amount up to about 50,000 ppm.

9. A polymeric material as defined in claim 1, wherein said polymeric article comprises a plastic film.

10. A polymeric material as defined in claim 1, wherein said polymeric article comprises a plastic container.

11. A polymeric material as defined in claim 9, wherein said plastic film comprises polyethylene.

12. A polymeric material as defined in claim 1, wherein said photochemical is capsicum.

13. A polymeric material as defined in claim 1, wherein said photochemical is grapefruit seed extract.

14. A polymeric material as defined in claim 13, wherein said polymeric article is tubing comprising latex.

15. A polymeric material as defined in claim 1, wherein said photochemical is tea tree oil.

16. A polymeric material as defined in claim 15, wherein said polymeric article is tubing comprising latex.

17. A polymeric article as defined in claim 1, wherein said photochemical is citric acid.