Antimicrobial cleaning composition

• US 6,270,754 B1
• Filed: 07/01/1999
• Issued: 08/07/2001
• Est. Priority Date: 04/04/1997
• Status: Expired due to Term

• Current Assignee: Clorox Company
• Original Assignee: Clorox Company
• Inventors: Ochomogo, Maria, Zhou, Boli
• Primary Examiner(s): Dodson, Shelley A.
• Application Number:
  US09/345,735
• Time in Patent Office: 768 Days
• Field of Search: 424/76.1, 424/486, 424/424, 424/405, 424/78.08
• US Class Current: 424/78.08
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/04 Dispersions, emulsions, suspoemulsions, suspension concentrates or gels foams A01N25/16
• CPC Class Codes: A01N 25/10 Macromolecular compounds
• CPC Class Codes: A01N 25/24 containing ingredients to enhance the sticking of the active ingredients
• 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 33/12 Quaternary ammonium compounds
• CPC Class Codes: C11D 3/3746 Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C11D 3/48 Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions

Abstract

A novel antibacterial cleaning composition which exhibits exceptional germicidal activity for sustained periods of time is provided. The antibacterial cleaning composition that includes: (a) a quaternary ammonium compound; (b) an anionic polymer having an acid number greater than 10 wherein the anionic polymer is partially or completely neutralized by the quaternary ammonium compound to form a polymer complex and wherein the polymer complex is greater than about 15% by weight of the solids in the composition; (c) a dispersing agent and/or solvent; and (d) water. The composition can be incorporated into the matrix of sponges. Alternatively, the quaternary ammonium compound can be complexed directly to cellulosic sponges that have been functionalized with anionic groups.

Claims

1. An antibacterial cleaning composition comprising:

(a) a quaternary ammonium compound;

(b) an anionic polymer having an acid number greater than 10 wherein the anionic polymer and the quaternary ammonium form a polymer complex wherein the polymer complex is greater than about 15% by weight of the solids in the composition and wherein the average molecular weight of the anionic polymer ranges from greater than about 5,000 to about 1,000,000;

(c) optionally a dispensing agent; and

(d) optionally, a solvent.

2. The cleaning composition of claim 1 wherein the polymer complex comprises about 15% to 100% of the solids in the composition.

3. The cleaning composition of claim 1 wherein the anionic polymer has an acid number that ranges from about 60 to 700.

4. The cleaning composition of claim 1 wherein the a quaternary ammonium compound is selected from the group consisting of C_8-22 dimethyl benzyl ammonium chloride, C_8-22 dimethyl ethylbenzyl ammonium chloride, di C_6-20 alkyl dimethyl ammonium chloride, paradiisobutylphenoxyethoxyethyl dimethyl benzyl ammonium chloride, chlorohexidine and poly(hexamethylene biguanide hydrochloride), and mixtures thereof.

5. The cleaning composition of claim 1 wherein the anionic polymer is selected from the group consisting of:

(1) a homopolymer that is selected from vinyl sulfonate, acrylate, methacrylate, styrene sulfonate, maleate, vinyl sulfate and mixtures thereof;

(2) a copolymer that is derived from (i) one or more anionic monomers that are selected from the group consisting of vinyl sulfonate, acrylate, methacrylate, styrene sulfonate, maleate, vinyl sulfate (ii) one or more nonionic monomers that are selected from vinyl esters, vinyl alcohol, vinyl ethers, acrylamide, methacrylamide, alkyl or aryl acrylate, alkyl or aryl methacrylate, alkyl or aryl maleate, acrylonitrile, vinyl pyrrolidone, alkenes, multifunctional acids, polyols, multifunctional amines, multifunctional isocyanates, multifunctional epoxies, and mixtures thereof, and (3) methylcarboxylate cellulose.

6. The cleaning composition of claim 1 wherein the nonionic polymer is selected from the group consisting of polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylamide, polyethylene oxide, polypropylene oxide, polyvinyl acetate, and mixtures thereof.

7. The cleaning composition of claim 1 wherein the cleaning composition is an aqueous composition which comprises a dispersing agent that is selected from the group consisting of a surfactant, nonionic polymer, and mixtures thereof.

8. The cleaning composition of claim 1 wherein the anionic polymer is crosslinked with a crosslinker that is selected from the group consisting of carbodiimide, aziridine, polyol, glyoxal, epoxy, transition metal ion, and mixtures thereof.

9. The cleaning composition of claim 1 wherein the cleaning composition is an aqueous composition which comprises a dispersing agent that is a surfactant that is selected from the group consisting of nonionic surfactant, amphoteric surfactant, and mixtures thereof.

10. The cleaning composition of claim 1 wherein the cleaning composition is an aqueous composition which comprises a water-miscible solvent that is selected from the group consisting of ethanol, isopropyl alcohol, butanol, amyl alcohol, ethylene glycol ether, acetone, propylene glycol ether, and mixtures thereof.

11. The cleaning composition of claim 1 wherein the cleaning composition is an aqueous composition which comprises a dispersing agent that comprises a nonionic polymer that is selected from the group consisting of polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylamide, polyethylene oxide, polypropylene oxide, polyvinyl acetate, and mixtures thereof.

12. The cleaning composition of claim 1 further comprises an adhesion promoter.

13. The cleaning composition of claim 1 wherein the composition is an aqueous mixture.

14. The cleaning composition of claim 1 wherein the composition is a gel.

15. The cleaning composition of claim 1 wherein the composition comprises:

(a) about 0.026% to 8% of a quaternary ammonium compound;

(b) about 0.05% to 15% of an anionic polymer;

(c) either (i) a dispersing agent selected from about 0.02% to 15% of a nonionic polymer or about 0.05% to 10% of a surfactant, or (ii) about 1% to 80% of a water-miscible solvent; and

(d) the balance, water.

18. The cleaning composition of claim 1 wherein the average molecular weight of the anionic polymer ranges up to about 150,000.

19. The cleaning composition of claim 1 wherein the average molecular weight of the anionic polymer ranges from 150,000 to 1,000,000.

16. The cleaning composition of claim 16 where the polymer complex comprises about 15% to 100% of the solids in the composition.

17. A method of rendering a surface with residual antibacterial action that comprises the steps of:

(a) applying an antibacterial cleaning composition onto the surface wherein the cleaning composition comprises;

(i) a quaternary ammonium compound;

(ii) an anionic polymer having an acid number greater than 10 wherein the anionic polymer and the quaternary ammonium compound form a polymer complex wherein the polymer complex is greater than about 15% by weight of the solids in the composition and wherein the average molecular weight of the anionic polymer ranges from greater than about 5,000 to about 1,.000,000 wherein;

(iii) either (1) a dispersing agent selected from a nonionic polymer or a surfactant, or (2) a water-miscible solvent; and

(iv) the balance, water; and

(b) allowing water and solvent, if present, to evaporate from the cleaning composition to form a layer of said polymer complex that is coated on the surface.

20. The cleaning composition of claim 17 wherein the anionic polymer has an acid number that ranges from about 60 to 700.

21. The cleaning composition of claim 17 wherein the average molecular weight of the anionic polymer ranges up to about 150,000.

22. The cleaning composition of claim 17 wherein the average molecular weight of the anionic polymer ranges from 150,000 to 1,000,000.