Solid acid/anionic antimicrobial and virucidal compositions and uses thereof

Patent metadata

Field	Value
Publication number	US-11937602-B2
Application number	US-201816143146-A
Country	US
Kind code	B2
Filing date	Sep 26, 2018
Priority date	Sep 26, 2017
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

Antimicrobial compositions including at least one acid and at least one anionic surfactant are provided. In particular, food contact antimicrobial compositions including at least one acid and at least one anionic surfactant provide efficacious virucidal activity, including against Norovirus, having acceptable use solution pH that do not require use of personal protective equipment (PPE), are surface compatible and do not leave residues on treated surfaces. Methods of cleaning a surface with the compositions are also provided and may beneficially eliminate the need to rinse the antimicrobial compositions after use.

First claim

What is claimed is:

1. A solid antimicrobial composition consisting of:
from about 50 wt-% to about 75 wt-% of a strong acid, wherein the strong acid is methane sulfonic acid, phosphoric acid, sulfuric acid, sodium bisulfate, or a combination thereof, based on total weight of the composition;
from about 8 wt-% to about 55 wt-% of a weak acid, wherein the weak acid is lactic acid, citric acid, maleic acid, or a combination thereof, based on total weight of the composition;
an anionic surfactant, wherein the anionic surfactant isa sulfonate, sulfate and/or carboxylate;
a nonionic surfactant and/or at least one solidifying agent, wherein the at least one nonionic surfactant is an alkoxylated surfactant having an ethylene oxide-propylene oxide (EO/PO) block copolymer; and wherein the at least one solidifying agent is polyethylene glycol, an alkali metal salt, or an alkaline earth metal salt; and
from about 0.1 wt-% to about 25 wt-% of water.

2. The composition of claim 1 , wherein the at least one anionic surfactant is a C 8 -C 22 alkyl sulfonate and/or alpha sulfonated carboxylic acid or its ester.

3. The composition of claim 1 , wherein the at least one anionic surfactant is linear alkyl benzene sulfonic acid.

4. The composition of claim 1 , wherein the composition forms a use solution when diluted with water and wherein the use solution has a use pH of from about 1.5 to about 4.

5. The composition of claim 1 , wherein the at least one anionic surfactant comprises from about 0.1 wt-% to about 38 wt-% of the solid composition.

Assignees

• Ecolab Usa Inc

Inventors

• Lo Wendy
• Anderson Derrick
• Olson Erik
• Hanson Catherine
• Li Junzhong
• Mcsherry David D
• Fawbush Stacy
• Lake Kaitlin
• Hinrichs Gerard
• Luedtke Joshua
• Staub Richard

Classifications

• A61L2103/15

  Laboratory, medical or dentistry appliances, e.g. catheters or sharps · CPC title

• C11D1/143

  Sulfonic acid esters · CPC title

• C11D2111/14

  Hard surfaces · CPC title

• C11D3/2086

  Hydroxy carboxylic acids-salts thereof · CPC title

• C11D3/48

  Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions · CPC title