Articles and methods for applying antimicrobial protection
Among other things, there is disclosed an improved wet wipe or similar substrate for applying an antibacterial/antibiotic layer to surfaces or other items. A wipe substrate is impregnated with a solution in water of organo-functional silane-based molecule, such as 3-(trihydroxysilyl) propyldimethyloctadecyl ammonium chloride and/or octadecyldimethyl trimethoxysilylpropyl ammonium chloride. Packages of multiple wipes for a consumer's pocket, home, business or other uses are also discussed.
1. A product comprising:
one or more articles each including a flexible absorbent substrate consisting of a material without polyolefins impregnated with a solution consisting of an organo-functional silane-base quaternary ammonium salt and a solvent, the solvent is at least about 90% water and optionally one or more phenol ethoxylates, polyethylene glycols, and/or polypropylene glycols, wherein the concentration of the organo-functional silane-base quaternary ammonium salt is between about 0.10 percent to 2.0 percent, the solution formulated for transfer of the organo-functional quaternary ammonium salt in solution to a surface from said substrate; and
a container initially substantially water tight in which said articles are enclosed in the solution, and from which said articles can be withdrawn,
wherein when one or more of said articles are withdrawn from said container, each said withdrawn article is saturated with said solution.
2. The product of claim 1 , wherein said substrate is one of a wipe, a towelette, a pad, a sachet, and a bandage.
3. The product of claim 1 , wherein said concentration of the organo-functional silane-base quaternary ammonium salt is between about 1.0 percent and 1.7 percent inclusive.
4. The product of claim 3 , wherein said concentration of the organo-functional silane-base quaternary ammonium salt is between about 1.3 percent and 1.4 percent inclusive.
5. The product of claim 3 , wherein said solution is such that when said solution is applied to the surface and dries, an antimicrobial layer remains on the surface.
6. The product of claim 1 , wherein said organo-functional silane-base quaternary ammonium salt is from the group consisting of 3-(trihydroxysilyl) propyldimethyloctadecyl ammonium chloride, octadecyldimethyl trimethoxysilylpropyl ammonium chloride, and combinations thereof.
7. A method of cleansing a surface, comprising
withdrawing at least one of the articles from the product of claim 1 ;
wiping the article on a surface, wherein said wiping transfers at least a portion of the solution including said organo-functional quaternary ammonium salt from the substrate to the surface so that a layer of solution is present on at least a portion of the surface; and
drying said solution on said surface, wherein a semi-permanent layer of said organo-functional silane-base quaternary ammonium salt is fixed to said surface, said layer providing continuous anti-microbial protection after said drying occurs.
8. The method of claim 7 , wherein said drying is accomplished through evaporation of the water from the solution at room temperature.
9. A method of making a substrate adapted to lay an antimicrobial solution on a surface, comprising:
applying a solution consisting of an organo-functional silane-base quaternary ammonium salt in a solvent, the solvent is at least about 90% water and optionally one or more phenol ethoxylates, polyethylene glycols, and/or polypropylene glycols, wherein the concentration of the organo-functional silane-base quaternary ammonium salt is between about 0.10 percent to 2.0 percent, and the solution is formulated for transfer of said organo-functional quaternary ammonium salt in solution to the surface from said substrate, to a flexible substrate consisting of a material without polyolefins, so that said substrate is impregnated with said solution and at least part of said solution remains in liquid form contacting or within said substrate, and
wherein said applying includes said solution in an amount sufficient to transfer at least a portion of said solution from said substrate to a surface when said substrate is brought into contact with said surface, and wherein said solution and said substrate are packaged in a container that is initially substantially water tight.
10. The method of claim 9 , wherein said organo-functional silane-base quaternary ammonium salt is from the group consisting of 3-(trihydroxysilyl) propyldimethyloctadecyl ammonium chloride, octadecyldimethyl trimethoxysilylpropyl ammonium chloride, and combinations thereof.
11. The method of claim 10 , wherein the substrate is disposable and from the group consisting of wipes, bandages, pads, sachets, and towelettes.
12. The product of claim 1 , wherein the solvent is at least about 95% water.
13. The product of claim 1 , wherein the solvent is at least about 97% water.
14. The product of claim 1 , wherein the solution consists of a suspension of the organo-functional silane-base quaternary ammonium salt dissolved in the solvent, and the solvent consists of water.
15. The product of claim 1 , wherein the substrate includes a natural material from the group consisting of wool, silk, jute, hemp, cotton, linen, sisal, ramie, and wood pulp.
16. The product of claim 1 , wherein the portion of the solution transferred to the surface includes an amount of the organo-functional silane-base quaternary ammonium salt, and wherein the amount is such that, if applied to and dried on clean dry glass slides, would result in an average contact angle on the slides of between about 80.4 degrees and 84 degrees.