Granted Patent
B2
US 12,220,429 · App. 15/267,220 · Granted Feb 11, 2025
Hand disinfectant
Assignee:
WIAB WATER INNOVATION AB
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Abstract
The invention provides a skin disinfectant for treating skin with eczema, preventing bacterial proliferation, and removing biofilm. Compositions of the invention include hypochlorous acid, acetic acid, water, and one or more additives or excipients. The formulation process removes metal ions, reduces ionic strength, controls pH, and reduces exposure to air, thus improving stability and lengthening shelf-life.
Claims (14)
1. A disinfectant composition comprising:
an aqueous solution of hypochlorous acid (HOCl) and acetic acid (HAc), the HAc present at a higher concentration than the HOCl, wherein the aqueous solution is mixed in an environment that is made air-free by degassing through reduced pressure; and an excipient comprising silica, clay material, glycerol, or cellulose;
wherein the composition is free of air and metal ions and wherein the composition has a pH between 4.0 and 5.0; and
wherein the aqueous solution has been made substantially-free of the metal ions by cycling water through more than one ion exchange cycle to remove CO 3 2− ions and HCO 3 − ions from the water thereby producing water substantially-free of CO 3 2− ions and HCO 3 − ions.
2. The composition of claim 1 , wherein the composition comprises a pH of 4.76.
3. The composition of claim 1 , wherein the excipient additionally includes EDTA.
4. The composition of claim 1 , wherein the composition is packaged in packaging that blocks the composition from exposure to UV light.
5. The composition of claim 1 , wherein the composition is mixed with a device from which all air has been purged.
6. The device of claim 5 , wherein the device comprises members including at least one aperture, and wherein the device is made of an inert material.
7. The device of claim 6 , wherein the size of the aperture depends on the pressure in the device.
8. The composition of claim 1 , wherein the excipient comprises colloidal silica.
9. The composition of claim 1 , wherein the excipient comprises synthetic clay materials.
10. The composition of claim 1 , wherein the excipient comprises xanthan gum.
11. The composition of claim 1 , wherein the excipient comprises cellulose derivatives.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jan 17, 2017
From: ALMAS, GEIR HERMOD
To: WIAB WATER INNOVATION AB
Reel/Frame 040988/0434 →
Continuity (7)
Provisional Application
61600344
· Feb 17, 2012
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