Antimicrobial storage of water or aqueous solutions especially in motor vehicles

Patent metadata

Field	Value
Publication number	US-11254803-B2
Application number	US-201917041924-A
Country	US
Kind code	B2
Filing date	Jan 25, 2019
Priority date	Mar 26, 2018
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

A service fluids container made of plastic for installation in a motor vehicle. The service fluids container is suitable for antimicrobial storage of service fluids even in the event that the motor vehicle is shut off for prolonged periods. The interior of the container accommodates an antimicrobial composition comprising a hydrophilic polymer and a complex compound of a metal salt with an organic ligand.

First claim

The invention claimed is:

1. A container for antimicrobial storage of water or aqueous solutions comprising an antimicrobial mixture arranged in an interior of the container and the antimicrobial mixture comprises a hydrophilic polymer and a complex compound of a metal salt with an organic ligand,
wherein the complex compound is embedded in a matrix consisting of the hydrophilic polymer.

2. The container according to claim 1 , wherein a proportion of the complex compound in the antimicrobial mixture lies in a range from ≥7 wt. % and ≤15 wt. %, or in a range from >10 wt. % and ≤13 wt. %.

3. The container according to claim 1 , wherein a proportion of the metal salt in the antimicrobial mixture is ≥0.6 wt. %, or is ≥1.0 wt. %.

4. The container according to claim 1 , wherein a ratio of a surface area of the antimicrobial mixture arranged in the interior of the container to a volume of the interior of the container is ≥0.06.

5. The container according to claim 1 , wherein the antimicrobial mixture is at least partly arranged as a layer on an inner surface of a wall of the container and/or on an installation part arranged in the interior of the container.

6. The container according to claim 1 , wherein the antimicrobial mixture is formed as a plate or a cage, and is a non-bearing installation part of the container.

7. The container according to claim 1 , wherein the antimicrobial mixture is present in a form of a granulate.

8. The container according to claim 1 , wherein the antimicrobial mixture is arranged within a partial volume of the container, which is fluidically connected to the interior of the container.

9. The container according to claim 8 , wherein the antimicrobial mixture is present in a form of a granulate,
wherein the partial volume is reversibly fastened to the container by means of a fastening device and arranged in the interior of the container, and
wherein a closeable opening in a wall of the container is a component of the fastening device.

10. The container according to claim 9 , wherein the closeable opening in the wall of the container has an inward protrusion into the interior of the container and/or an outward protrusion.

11. The container according to claim 10 , wherein a clear width of the inward protrusion and/or the outward protrusion decreases in a direction of the interior of the container.

12. The container according to claim 9 , wherein the container has a closure which is insertable from outside of the container into the closeable opening of the container, and
wherein the partial volume is insertable from the interior of the container into the closeable opening.

13. The container according to claim 12 , wherein the closure is inserted into and fastened in a force-locking and/or form-locking manner to the closeable opening, and
wherein the partial volume is inserted into and fastened in the force-locking and/or form-locking manner to the closeable opening.

14. The container according to claim 13 , wherein the force-locking and/or form-locking manner is carried out by a connection, and
wherein said connection is a thread, a screw connection, an interference-fit connection, a press-fit connection, a bayonet connection, or a clip connection.

15. The container according to claim 12 , wherein the closure has a valve and/or a semipermeable membrane.

16. The container according to claim 12 , wherein the closure has a hose connection.

17. The container according to claim 9 , wherein the partial volume or a partial volume connectable to a closure is insertable from outside of the container into the closeable opening of the container, whereby the closeable opening is closed.

18. The container according to claim 17 , wherein the partial volume or the partial volume connectable to the closure is inserted into and fastened in a force-locking and/or form-locking manner to the closeable opening, whereby the closeable opening is closed.

19. The container according to claim 9 , wherein the closeable opening is an air-inlet and/or ventilation opening of the container.

20. The container according to claim 1 , wherein the antimicrobial mixture is arranged, at least in part, in a bottom area of the container.

21. The container according to claim 1 , wherein the antimicrobial mixture is connected to a wall of the container or rests on a bottom of the container.

22. The container according to claim 1 , wherein the hydrophilic polymer is a polyacrylate or a polyamide selected from the group consisting of polyamide 6, polyamide 6.6, polyamide 6.10, polyamide 11, polyamide 12, and copolyamide 6/66.

23. The container according to claim 1 , wherein the organic ligand is selected from the group consisting of a 2-oxazoline derivative of an organic carboxylic acid, polyethyleneimine, and polyester polyol.

24. The container according to claim 23 , wherein the organic ligand is one of the polyethyleneimine or the polyester polyol and is amphiphilically modified by an n-alkane carboxylic acid.

25. The container according to claim 1 , wherein a metal ion of the metal salt is an ion of a metal selected from the group consisting of Ag, Co, Cu, Mn, Mo, Os, Sn, Ti, and Zn.

26. The container according to claim 1 , wherein the antimicrobial storage leads to a reduction in a number of microorganisms contained in the water or the aqueous solution by at least 50%.

27. A method for antimicrobial storage of water or aqueous solutions using the container according to claim 1 , the method comprising placing the aqueous solutions or the water into the container.

Assignees

• Kautex Textron Gmbh & Co Kg

Inventors

• Eberhardt Agnes
• Heidemeyer Timm
• Metsahel Sammy

Classifications

• C08L77/06

  Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) · CPC title

• C09D5/14 Primary

  Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence) · CPC title

• C08L33/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• C08K5/56 Primary

  Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond · CPC title