Durable Antimicrobial Composition Including a Surfactant
The present invention relates to compositions having durable antimicrobial activity. The compositions include a carbonate/bicarbonate salt of a quaternary ammonium cation, an organic acid, hydrogen peroxide, a surfactant and a polymer. The polymer is selected from cationic amine polymer-epichlorohydrin adduct, cationic amine polymer-epichlorohydrin resin, poly(methacrylamidopropyltrimethylammonium)chloride, poly(bis(2-chloroethyl)ether-alt-1,3-bis(dimethylamino)propyl)urea, poly(diallyldimethylammonium)chloride, poly(t-butyl acrylate co-ethyl acrylate co-methacrylic acid), polyethylene oxide, polyquaternium-16, polyquaternium-22, polyquatemium-67 and combinations thereof. The surfactant is selected from cationic surfactants, non-ionic surfactants, zwitterionic surfactants and combinations thereof.
1 . A composition having durable antimicrobial activity comprising:
a carbonate/bicarbonate salt of a quaternary ammonium cation;
an organic acid;
a surfactant selected from cationic surfactants, non-ionic surfactants, zwitterionic surfactants, and combinations thereof;
hydrogen peroxide; and
a polymer selected from cationic amine polymer-epichlorohydrin adduct, cationic amine polymer-epichlorohydrin resin, poly(methacrylamidopropyltrimethylammonium)chloride, poly(bis(2-chloroethyl)ether-alt-1,3-bis(dimethylamino)propyl)urea, poly(diallyldimethylammonium)chloride, poly(t-butyl acrylate co-ethyl acrylate co-methacrylic acid), polyethylene oxide, polyquatemium-16, polyquaternium-22, polyquaternium-67, and combinations thereof.
2 . The composition of claim 1 wherein the carbonate/bicarbonate salt of a quaternary ammonium cation is selected from dioctyldimethylammonium carbonate, decyloctyldimethylammonium carbonate, didecyldimethylammonium carbonate, benzalkonium carbonate, benzethonium carbonate, stearalkonium carbonate, cetrimonium carbonate, behentrimonium carbonate, dioctyldimethylammonium bicarbonate, decyloctyldimethylammonium bicarbonate, didecyldimethylammonium bicarbonate, benzalkonium bicarbonate, benzethonium bicarbonate, stearalkonium bicarbonate, cetrimonium bicarbonate, behentrimonium bicarbonate, and combinations thereof.
3 . The composition of claim 1 wherein the organic acid is selected from citric, malic, maleic, oxalic, glutaric, succinic, lactic, glycolic, fumaric, acetic, benzoic, propionic, sorbic, tartaric, formic, and combinations thereof.
4 . The composition of claim 1 wherein the composition further comprises urea.
5 . The composition of claim 1 wherein the composition retains antimicrobial activity after twenty-five insults of E. coli as measured by a log 2 reduction in organisms upon the twenty-fifth insult of 10 6 total organisms.
6 . The composition of claim 1 wherein the composition is effective against Gram positive bacteria, Gram negative bacteria, enveloped viruses, non-enveloped viruses, fungi, fungal spores, mildew and mold.
7 . The composition of claim 1 wherein the composition includes from 0.2 to 15.0 percent by weight of the carbonate/bicarbonate salt of a quaternary ammonium cation.
8 . The composition of claim 1 wherein the composition includes from 0.1 to 3.0 percent by weight of the organic acid.
9 . The composition of claim 1 wherein the composition includes from 0.5 to 5.0 percent by weight of hydrogen peroxide.
10 . The composition of claim 1 wherein the composition includes from 0.5 to 10.0 percent by weight of polymer.
11 . The composition of claim 1 wherein the composition is incorporated into a nonwoven basesheet.
12 . The composition of claim 1 wherein the surfactant is selected from ethoxylated alkylphenols, ethoxylated and propoxylated fatty alcohols, polyethylene glycol ethers of methyl glucose, polyethylene glycol ethers of sorbitol, ethylene oxide-propylene oxide block copolymers, ethoxylated esters of fatty (C 8-18 ) acids, condensation products of ethylene oxide with long chain amines or amides, condensation products of ethylene oxide with alcohols, alkyl ammonium salts, polymeric ammonium salts, alkyl pyridinium salts, aryl ammonium salts, alkyl aryl ammonium salts, silicone quaternary ammonium compounds, alkyl amine oxides, silicone amine oxides, and combinations thereof.
13 . The composition of claim 1 wherein the composition includes from 0.05 to 3 percent by weight of the surfactant.