# US 10,246,671 B2 · Compositions and methods for use in surface decontamination

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- Number: US 10,246,671 B2
- Document ID: US10246671B2
- Status: Granted
- Kind: B2
- Application number: 15/668,095
- Filed: 2017-08-03
- Published: 2017-11-23
- Granted: 2019-04-02
- Earliest claimed: 2016-02-12
- Assignees: Kinnos Inc.
- Applicants: Kinnos Inc.
- Inventors: Jason Kang; Kevin Tyan; Katherine Jin
- Web page: https://patentgrep.com/patent/US10246671B2

## CPC

- C11D 9/444: {Dyes; Pigments}
- A01N 59/00: Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- C11D 3/044: {Hydroxides or bases}
- C11D 3/046: {Salts}
- C11D 3/3947: {Liquid compositions}
- C11D 3/3953: {Inorganic bleaching agents (C11D3/3951 takes precedence)}
- C11D 3/3956: {Liquid compositions}
- C11D 3/40: Dyes {; Pigments}
- G01N 21/78: producing a change of colour
- G01N 31/226: {for investigating the degree of sterilisation}
- A61L 2/22: Phase substances, e.g. smokes or aerosols
- C11D 1/62: Quaternary ammonium compounds
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)

## 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.

## Claims

### Claim 1

A solid composition comprising
at least one water-soluble pigment in an amount of from 1.5-22% w/w, based on the total weight of the composition,
at least one surfactant in an amount of from 10-75% w/w, based on total weight of the composition, the surfactant selected from the group consisting of sodium dodecyl sulfate (SDS), sodium xylene sulfonate (SXS), an acetylenic diol, and mixtures thereof,
an alkaline builder in an amount of from 2-50% w/w, based on the total weight of the composition, the alkaline builder selected from NaOH and Ca(OH)2, and mixtures thereof, and
a rheology modifier in an amount of from 10-65% w/w, based on the total weight of the composition, wherein the rheology modifier is lambda carrageenan.

### Claim 2 (depends on 1)

The solid composition of claim 1, wherein the at least one water-soluble pigment is Acid Green 50.

### Claim 3 (depends on 1)

The solid composition of claim 1, wherein the ratio of surfactant to water-soluble pigment in the composition is from 2:1 to 43:1.

### Claim 4 (depends on 1)

The solid composition of claim 1, wherein the ratio of alkaline builder to water-soluble pigment in the composition is from 0.1:1 to 7:1.

### Claim 5 (depends on 1)

The solid composition of claim 1, wherein the ratio of rheology modifier to water-soluble pigment in the composition is from 0.7:1 to 10:1.

### Claim 6 (depends on 3)

The solid composition of claim 3, wherein the ratio of surfactant to water-soluble pigment in the composition is from 5:1 to 10:1.

### Claim 7 (depends on 4)

The solid composition of claim 4, wherein the ratio of alkaline builder to water-soluble pigment in the composition is from 4:1 to 7:1.

### Claim 8 (depends on 5)

The solid composition of claim 5, wherein the ratio of rheology modifier to water-soluble pigment in the composition is from 1:1 to 5:1.

### Claim 9 (depends on 5)

The solid composition of claim 5, wherein the rheology modifier is lambda carrageenan and the total amount of rheology modifier is 10-20% w/w.

### Claim 10 (depends on 1)

The solid composition of claim 1, wherein the composition is suitable to color a bulk aqueous solution of sodium dichloroisocyanurate (NaDCC) such that the color is stable in the bulk solution for at least 4 hours, but which color fades to clear within a predetermined time period of from 1 to 15 minutes, when the solution is applied as a spray or film to a surface.

### Claim 11 (depends on 10)

The solid composition of claim 10, wherein the predetermined time period is from 3 to 10 minutes, when the solution is applied as a spray or film to the surface.

### Claim 12 (depends on 10)

The solid composition of claim 10, wherein the bulk aqueous solution is 0.1-2% NaDCC.

### Claim 13 (depends on 10)

The solid composition of claim 10, wherein the bulk aqueous solution is 0.5-1% NaDCC.

### Claim 14 (depends on 2)

The solid composition of claim 2, wherein the water-soluble pigment is 3-8% w/w.

### Claim 15 (depends on 2)

The solid composition of claim 2, wherein the water-soluble pigment is 4-7% w/w.

### Claim 16 (depends on 1)

The solid composition of claim 1, wherein the total amount of surfactant is 40-60% w/w.

### Claim 17 (depends on 1)

The solid composition of claim 1, wherein the total amount of alkaline builder is from 20-50% w/w.