Additive compositions for pigmented disinfection and methods thereof
Inventors
KANG, JASON • Tyan, Kevin • Jin, Katherine
Assignees
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Publication Number
US-10052398-B2
Publication Date
2018-08-21
Expiration Date
Abstract
The invention provides a powdered composition of additives and a method of use thereof for increasing the visibility, potency and coverage of disinfectant solutions, such as bleach.
Core Innovation
The invention relates to solid, particulate additive compositions for pigmented disinfection. The compositions include particles comprising a surfactant, a water-soluble pigment, a thickening agent, an alkaline builder, and a hydrotrope, and are provided in forms such as powdered or packet compositions for mixing into a conventional disinfectant.
The invention addresses the problem of disinfection visibility and coverage by providing a pigmented liquid disinfectant when the solid additive is mixed into the disinfectant. The added pigment provides color to indicate treatment, while the color is designed to fade and clear over a pre-selected period of time.
The document discloses that disinfectant formulations incorporating the pigmented additive can use sodium hypochlorite/bleach and other disinfectant types, including peracetic acid-based disinfectants. The disclosure also indicates that the pigment fades without staining.
Claims Coverage
The relevant material contains one independent claim directed to a solid composition, and one independent claim directed to a visibility method.
Solid composition with selected surfactant, water-soluble pigment, thickening agent, alkaline builder, and hydrotrope
A solid composition comprising particles of a surfactant selected from sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, hexadecyltrimethylammonium bromide, and sodium 3,4-dichlorobenzoate; a water-soluble pigment; a thickening agent; an alkaline builder selected from sodium hydroxide and potassium hydroxide; and a hydrotrope selected from sodium p-toluenesulfonate, potassium toluene-4-sulphonate, sodium xylenesulfonate, potassium xylenesulfonate, and sodium cumenesulfonate.
Visibility of a liquid disinfectant using a 3 to 10 minute pigment fade
A method of increasing the visibility of a liquid disinfectant by mixing the composition into the disinfectant, applying it to a surface as a spray or film, where the amount added is sufficient to color the disinfectant and the color fades within 3 to 10 minutes after application.
Overall, the claim set covers a solid, particulate pigmented-disinfection additive composition defined by specified surfactants, water-soluble pigment, thickening agent, alkaline builder, and hydrotrope, and a visibility method in which pigment is introduced into a liquid disinfectant and fades within a defined time window after application.
Stated Advantages
Improved spray coverage compared with regular bleach/dye.
Improved stickiness compared with regular bleach/dye.
Color fades and clears within a pre-selected period of time.
Pigment is described as fading without staining.
Disinfecting efficacy against West Nile virus is described as comparable for additive-enhanced bleach and regular bleach.
Documented Applications
Increasing the visibility of a liquid disinfectant by mixing the solid pigmented additive into the disinfectant and applying it to a surface as a spray or film.
Use of additive-enhanced bleach as a disinfectant with efficacy described against West Nile virus.
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