Ambient moisture-activated hard surface treatment powder
AssigneeSterilex, LLC
InventorsEdward Fu, Mark Wozniak, Chris Bergstrom
Life of this patent
Estimating the term…
Abstract
Ambient moisture-activatable surface treatment powders containing persalt, positively charged phase transfer agent and alkaline pH buffering may be activatable without the addition of liquid. Some ambient moisture-activatable surface treatment powders are substantially free of bleach activators and/or chlorine. Methods of use of ambient moisture activatable powders include applying them to the surfaces to be treated.
Claims22
1-26. (canceled)
A method of treating a hard surface, the method comprising applying an ambient moisture-activated hard surface treatment powder to the hard surface, wherein the treatment powder comprises by weight percentage of the hard surface treatment powder:
- (a) from about 5% to less than about 50% persalt, by weight of the hard surface treatment powder;
- (b) a phase-transfer agent selected from one or both of a sulfonium salt and a phosphonium salt;
- and
- (c) an alkaline buffering agent,
- wherein:
- the hard surface treatment powder comprises particles, wherein at least about 65% of the particles range in size of from about 125 microns to about 250 microns;
- and
- the alkaline buffering agent comprises from about 5% to about 10% sodium carbonate by weight of the hard surface treatment powder;
- and from about 20.5% to about 90% of sodium bicarbonate by weight percentage of the hard surface treatment powder.
An ambient moisture-activatable hard surface treatment powder comprising, by weight percentage of the surface treatment powder:
- (a) from about 5% to about 10% sodium carbonate;
- (b) from about 15% to about 90% sodium bicarbonate;
- (c) from about 10% to about 40% sodium percarbonate;
- (d) from about 1% to about 10% a phase-transfer agent selected from one or both of a sulfonium salt and a phosphonium salt;
- (e) from about 2% to about 5% EDTA;
- and
- (f) from about 0.1% to about 4% polyethylene glycol.
A method of treating a hard surface, the method comprising applying to the hard surface an ambient moisture-activatable surface treatment powder comprising, by weight percentage of the surface treatment powder:
- (a) from about 5% to about 49% percarbonate salt;
- (b) from about 0.5% to about 30% phase-transfer agent selected from one or both of a sulfonium salt and a phosphonium salt;
- (c) from about 15% to less than about 90% monocationic carbonate salt;
- (d) from about 0.5% to about 15% chelating agent;
- (e) from about 0.1% to about 10% glycol;
- and
- (f) a colorant.
Dependencies are inferred from the claim text.