Ambient moisture-activated hard surface treatment powder comprising a carbonate/persalt/sulfonium or phosphonium salt combination
AssigneeSterilex, LLC
InventorsEdward Fu, Mark Wozniak, Chris Bergstrom
Life of this patent
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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.
Claims16
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 comprising:
- i) about 5% to about 10% sodium carbonate by weight of the hard surface treatment powder;
- and
- ii) about 20.5% to about 90% of sodium bicarbonate by weight percentage of the hard surface treatment powder, 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.
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.
Dependencies are inferred from the claim text.