Compositions and methods for use in surface decontamination

Inventors

KANG, JASON • Tyan, Kevin • Jin, Katherine

Assignees

Kinnos Inc

Abstract

The disclosure provides compositions and methods for making a colorized solution of an aqueous disinfectant that is both stable in bulk solution and will fade to clear within a predetermined period of time after being applied to a surface, for example as a spray or film. The compositions and methods described here allow an end user to visualize both the extent of coverage and the duration of contact of the disinfectant with the surface, thereby providing more efficient disinfection of the surface.

Core Innovation

The invention relates to a colored aqueous solution of 0.1–2% sodium hypochlorite or calcium hypochlorite that includes at least one oxidizable water-soluble pigment. The solution is formulated such that the color is stable in the colored aqueous solution for from 10 to 20 minutes.

The solution further comprises a surfactant selected from sodium dodecyl sulfate (SDS), sodium xylene sulfonate (SXS), sodium laureth sulfate (SLES), sodium myreth sulfate (SMS), sodium cholate, an acetylenic diol, alkyldiphenyloxide disulfonate, and sodium toluene sulfonate (STS) and mixtures thereof.

The solution also includes an alkaline builder selected from sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)2), potassium hydroxide (KOH), and lithium hydroxide (LiOH) and mixtures thereof. An optional rheology modifier selected from sodium alginate, glycerol, guar gum, dextran, cellulose, carrageenan (lambda, iota, kappa), sodium carbonate, fumed silica, alkali swellable emulsions, hydrophobically modified alkali swellable emulsions, hydrophobically-modified polyurethanes, and sodium polyacrylate and mixtures thereof can be included.

Claims Coverage

The provided partial content includes one independent claim. It defines a colored aqueous solution whose color remains stable for 10–20 minutes and fades to clear when applied as a spray or film to a surface, with specific classes of oxidizable pigments, surfactants, alkaline builders, and optional rheology modifiers.

Across the independent claim, the core coverage is the combination of a 0.1–2% sodium hypochlorite or calcium hypochlorite aqueous solution, an oxidizable water-soluble pigment that provides color stable for 10–20 minutes, and the specified surfactant and alkaline builder classes, with an optional rheology modifier, where the color fades to clear after spray/film application to a surface.

Stated Advantages

Documented Applications