Carpet cleaning method
View Patent ↗A method of cleaning a carpet surface comprises the steps of simultaneously dispensing a cleaning composition and an oxidizing composition that enhances the cleanability of the cleaning composition from separate first and second chambers onto the carpet surface and recovering a soiled cleaning solution from the carpet.
1. A method for cleaning a carpet comprising the steps of:
simultaneously dispensing a cleaning composition and an oxidizing composition that enhances the cleanability of the cleaning composition from separate first and second chambers onto a surface of the carpet, wherein the oxidizing composition consists of deionized water, a peroxide compound, a pH stabilizer, a polysiloxane-based anti-soil agent and/or methacrylate-based anti-stain agent, and optionally, a propellant; and
recovering a soiled cleaning solution from the carpet.
2. A method of cleaning a carpet according to claim 1 wherein the dispensing step comprises aerosol propelling the cleaning composition and the oxidizing composition from each of the first and second chambers.
3. A method of cleaning a carpet according to claim 1 wherein the dispensing step comprises mechanically pumping the cleaning composition and the oxidizing composition from each of the first and second chambers.
4. A method of cleaning a carpet according to claim 1 and further comprising the step of mixing the cleaning composition and the oxidizing composition together before the dispensing step or subsequent to the dispensing step.
5. A method of cleaning a carpet according to claim 4 wherein the mixing step comprises mixing the cleaning composition and the oxidizing composition together at the surface of the carpet after the dispensing step.
6. A method of cleaning a carpet according to claim 1 wherein the cleaning composition comprises at least one of a cleaning solvent, a surfactant, a fragrance or combinations thereof.
7. A method of cleaning a carpet according to claim 6 wherein the cleaning composition further includes a pH adjusting agent to maintain a pH of the cleaning composition between 7.5 and 12.0 in order to trigger release of oxygen in the oxidizing composition.
8. A method of cleaning a carpet according to claim 1 wherein a pH of the cleaning composition is about 9.5.
9. A method of cleaning a carpet according to claim 1 wherein the peroxide compound is hydrogen peroxide.
10. A method of cleaning a carpet according to claim 1 wherein a pH of the cleaning composition is greater than 7 and a pH of the oxidizing composition is alkaline, and wherein a pH of the combined cleaning composition and the oxidizing composition is sufficiently greater than 7 to activate a discharge of oxygen from the oxidizing composition for enhanced cleaning of the carpet surface.
11. A method of cleaning a carpet according to claim 1 wherein a pH of the oxidizing composition is in the range of 6.8 to 8.5.
12. A method of cleaning a carpet according to claim 1 wherein the cleaning composition further includes an activator selected from the group consisting of: sodium carbonate, metals ions, metals salts, sodium bicarbonate, carbonates, tetraacetylethylenediamine, sodium octanoyloxybenzene sulfonate, sodium nonanoyloxybenzene sulfonate, sodium decanoyloxybenzene sulfonate, (6-octanamido-caproyl)oxybenzenesulfonate, (6-nonanamido-caproyl)oxybenzenesulfonate, 6-decanamido-caproyl)oxybenzenesulfonate, or mixtures thereof.
13. A method of cleaning a carpet according to claim 12 wherein the activator is a carbonate.
14. The method of cleaning a carpet according to claim 1 wherein of the cleaning composition further comprises a polysiloxane-based anti-soil agent and/or a methacrylate-based anti-stain agent.