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US 2014/0227333 A1Published application
Dry active oxygen technology
AssigneeEcolab USA Inc.
InventorsKim R. Smith, Steven E. Lentsch
Life of this patent
Estimating the term…
Abstract
Active oxygen compounds, such as equilibrium peroxycarboxylic acid compositions are incorporated within an adsorbed outer layer of hydrophobic particulate component that remains undissolved from the active oxygen component. The dry powder compositions containing the active oxygen compounds provide a stable, controlled release composition having various applications of use. Beneficially, the dry powders delivering active oxygen compounds are low or no odor compositions and do not require the use of personal protective equipment for persons handling the compositions.
Claims20
A dry active oxygen composition comprising:
- from about 50 wt.-% to about 99 wt.-% of a liquid aqueous active oxygen component having a pH of less than 8, wherein said active oxygen component is an aqueous solution of peroxycarboxylic acid, sulfonated peroxycarboxylic acid, hydrogen peroxide, persulfates, perborates, percarbonates, urea, or combinations thereof;
- and
- from about 0.1 wt.-% to about 30 wt-% of a hydrophobic particulate component adsorbed as an outer layer surrounding said liquid active oxygen component,
- wherein said composition is a flowable, dry-to-touch powder composition by formation of a composite of the liquid aqueous active oxygen component and the hydrophobic particulate component, wherein said hydrophobic particulate is adsorbed and not encapsulating onto the liquid aqueous active oxygen component, and wherein said hydrophobic particulate component does not dissolve within the liquid component for a period of time greater than at least 24 hours.
1 more element
A kit comprising:
- a sealed container;
- a composite dry active oxygen composition comprising a liquid aqueous composition containing from about 50 wt-% to about 99 wt-% of an active oxygen component having a of less than 8, wherein said active oxygen component is an aqueous solution of peroxycarboxylic acid, sulfonated peroxycarboxylic acid, hydrogen peroxide, persulfates, perborates, percarbonates, urea, or combinations thereof, and from about 0.1 wt-% to about 30 wt-% of a hydrophobic particulate component adsorbed as an outer layer surrounding said active oxygen component, wherein said composition is a flowable, dry-to-touch powder composition by formation of a composite of the liquid aqueous active oxygen component and the hydrophobic particulate component, wherein said hydrophobic particulate is adsorbed and not encapsulating onto the liquid aqueous active oxygen component, and wherein said hydrophobic particulate component does not dissolve within the liquid component for a period of time greater than at least 24 hours;
- and
- instructions for application of use.
1 more element
A method of using a dry active oxygen composition comprising:
- combining a liquid aqueous active oxygen component and an adsorbed hydrophobic particulate component to form a composite dry active oxygen composition, wherein said active oxygen component is an aqueous solution of peroxycarboxylic acid, sulfonated peroxycarboxylic acid, hydrogen peroxide, persulfates, perborates, percarbonates, urea, or combinations thereof, constitutes from about 50 wt-% to about 99 wt-% of the composition, and has a pH of less than 8, wherein said hydrophobic particulate component constitutes from about 0.1 wt-% to about 30 wt-% of the composition, wherein said active oxygen component is contained within said adsorbed layer of hydrophobic particulate component, wherein said composition is a flowable, dry-to-touch powder, wherein said hydrophobic particulate component does not dissolve within the liquid component for a period of time greater than at least 24 hours;
- and
- applying said composite thy active oxygen composition to a surface in need of treatment thereof;
- and/or
- storing said composite dry active oxygen composition within a sealed container for subsequent application to a surface in need of treatment.
2 more elements
Dependencies are inferred from the claim text.