Polymer composite film with biocide functionality

• US 8,372,418 B2
• Filed: 07/18/2008
• Issued: 02/12/2013
• Est. Priority Date: 07/20/2007
• Status: Active Grant

• Current Assignee: Imaflex Inc.
• Original Assignee: Bayer Vital GmbH (Bayer AG)
• Inventors: Becker, Rolf Christian, Toapanta, Marco, Schmuck, Arno, Dujardin, Ralf, Streitenberger, Almuth
• Primary Examiner(s): LEVY, NEIL S
• Application Number:
  US12/176,070
• Publication Number:
  US 20090156406A1
• Time in Patent Office: 1,670 Days
• Field of Search: None
• US Class Current: 424/411
• CPC Class Codes: A01G 13/0275 Films
• 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: A01N 33/22 having at least one oxygen or sulfur atom and at least one nitro group directly attached to the same aromatic ring system
• CPC Class Codes: A01N 43/12 condensed with a carbocyclic ring
• CPC Class Codes: A01N 43/80 five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
• CPC Class Codes: A01N 47/36 containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
• CPC Class Codes: A01N 57/20 containing acyclic or cycloaliphatic radicals

Abstract

Polymer composite material with biocide functionality, preferably for the use in agriculture, comprising at least one base polymer compound and at least one biocide active ingredient, wherein the biocide active ingredient is an organic biocide that can be emitted from the polymer composite material by diffusion and/or osmosis and method of its production.

Claims

1. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray comprising a polymer composite material with biocide functionality, comprising:

a) a film consisting essentially of a polymer; and

b) at least one coating layer, comprising at least one biocide active ingredient,

wherein the biocide active ingredient comprises an organic biocide that can be emitted from the polymer composite material by diffusion and/or osmosis,

wherein the biocide active ingredient is a molecular dispersion in the at least one coating layer,

wherein the at least one coating layer comprises at least one binder and at least one carrier fluid, and

wherein said binder is gelatin and a superabsorber selected from the group consisting of poly(acrylates), maleic anhydride copolymers, poly(vinyl sulfonates), poly(soduim acrylate-co-acrylic acid), poly(vinylsulfonic acid), and dispersions from block co-polymers of ethylene oxide with polyurethane.

2. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray comprising a polymer composite material with biocide functionality, comprising:

a polymer film, which does not contain a biocide active ingredient incorporated therein, and at least one coating layer comprising at least one biocide active ingredient,

wherein the biocide active ingredient comprises an organic biocide that can be emitted from the polymer composite material by diffusion and/or osmosis,

wherein the biocide active ingredient is a molecular dispersion in the at least one coating layer,

wherein the at least one coating layer comprises at least one binder and at least one carrier fluid, and

wherein said binder is gelatin and a superabsorber selected from the group consisting of poly(acrylates), maleic anhydride copolymers, poly(vinyl sulfonates), poly(soduim acrylate-co-acrylic acid), poly(vinylsulfonic acid), and dispersions from block co-polymers of ethylene oxide with polyurethane.

3. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, wherein the polymer film has a thickness of 10 to 250 μ

m and the coating layer has a thickness of 0.5 to 5 μ

m.

4. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, comprising different coating layers, said layers comprising the same biocide active ingredient or different biocide active ingredients.

5. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, wherein the organic biocide is at least one selected from the group consisting of pesticides, herbicides, insecticides, algicides, fungicides, moluscicides, miticides, rodenticides, germicides, antibiotics, antibacterials, antivirals, antifungals, antiseptics, antiprotozoals, antiparasites, antiseptics, and disinfectants.

6. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, wherein the coating layer has a water uptake of at least 100% over a coating layer area.

7. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 4, wherein said at least one coating layer comprises water.

8. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, wherein said fluid comprises water and/or an organic solvent.

9. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, wherein said at least one coating layer comprises a hardener.

10. A mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, wherein said binder is cross-linkable, and after said binder is cross linked, said binder is water absorbing and/or gel forming.

11. A mulch film, fumigation film propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, wherein the polymer film is low-density polyethylene film.

12. A method for the production of a mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, comprising:

mixing at least one coating compound and at least one biocide active ingredient so that the biocide active ingredient is incorporated, in a form of a molecular dispersion, and to form a first product,

coating a polymer film with the first product and curing the first product to form a coating layer on said polymer film.

13. A method according to claim 12 wherein the method further comprises coating the polymer film on at least two sides thereof, and wherein the at least one biocide active ingredient is different on each side of said polymer film and/or the at least one coating compound is different on each side of said polymer film.

14. A method of using the mulch film, fumigation film, propagation film, propagation pot, nursery tray, or harvest tray according to claim 2, comprising:

applying the polymer composite material to an area to control pests.

15. A method as claimed in claim 14, wherein the polymer composite material is applied to:

mulch, areas to which fumigation will be applied, areas to which plant propagation is conducted, propagation pots, nursery trays and/or harvest trays.