Hydrogen peroxide disinfectant with increased activity

Abstract

An acidic aqueous hydrogen peroxide solution is provided with improved disinfectant activity. Concentrated solutions preferably contain up to about 8 wt./wt. % H2O2 and as-used concentrations contain about 0.5% wt./wt. % H2O2. The solution also contains from 0.05 to 8.0 wt./wt. % of at least one phosphorous-based acid, e.g. phosphoric acid and/or a phosphonic acid with from 1 to 5 phosphonic acid groups, and from 0.02 to 5 wt./wt. % of at least one anionic surfactant. The surfactant is selected from C8 to C16 alkyl aryl sulfonic acids, sulfonated C12 to C22 carboxylic acids, C8 to C22 alkyl diphenyl oxide sulfonic acids, naphthalene sulfonic acids, C8 to C22 alkyl sulfonic acids, and alkali metal and ammonium salts thereof, and alkali metal C8 to C18 alkyl sulfates, and mixtures thereof. Most preferably the solution has an emulsifier, e.g. a polyoxyethylene surfactant. The solution also preferably contains a hydrotrope, e.g. an alkylated sulfonated diphenyl oxide salt. The solution may also contain corrosion inhibitors and/or lower alcohols.

1 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and consisting essentially of: 
 i) hydrogen peroxide in a concentration of from 0.01 to 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution;    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution; and    iv) the remainder to 100 wt./wt. % water.    
     
     
         2 . A solution according to  claim 1  wherein the pH is from 1 to 3.  
     
     
         3 . A solution according to  claim 2  wherein the solution has a hydrogen peroxide concentration of from 0.05 to 8.0 wt./wt. % of the solution.  
     
     
         4 . A solution according to  claim 3  wherein the solution has a hydrogen peroxide concentration of from 0.05 to 1.0 wt./wt. % of the solution.  
     
     
         5 . A solution according to  claim 2  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, phosphonic acids having 1 to 5 phosphonic acid groups, and mixtures thereof.  
     
     
         6 . A solution according to  claim 5  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, amino tri(methylene phosphonic acid), 1-hydroxyethylidene-1,1,-diphosphonic acid, diethylenetriaminepenta(methylene phosphonic acid), 2-hydroxyethylimino bis(methylene phosphonic acid), ethylene diamine tetra(methylene phosphonic acid), and mixtures thereof.  
     
     
         7 . A solution according to  claim 6  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, 1-hydroxyethylidene-1,1,-diphosphonic acid, and mixtures thereof.  
     
     
         8 . A solution according to  claim 2  containing dodecyl benzene sulfonic acid or an alkali metal salt or ammonium salt thereof.  
     
     
         9 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and consisting essentially of: 
 i) hydrogen peroxide in a concentration of from 0.01 to 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution;    iv) up to about 3 wt./wt. % of an additional component selected from the group consisting of emulsifiers, hydrotropes, and mixtures thereof; and    v) the remainder to 100 wt./wt. % water.    
     
     
         10 . A solution according to  claim 9  wherein the pH is from 1 to 3.  
     
     
         11 . A solution according to  claim 10  wherein the solution has a hydrogen peroxide concentration of from 0.05 to 8.0 wt./wt. % of the solution.  
     
     
         12 . A solution according to  claim 11  wherein the solution has a hydrogen peroxide concentration of from 0.05 to 1.0 wt./wt. % of the solution.  
     
     
         13 . A solution according to  claim 10  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, phosphonic acids having 1 to 5 phosphonic acid groups, and mixtures thereof.  
     
     
         14 . A solution according to  claim 13  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, amino tri(methylene phosphonic acid), 1-hydroxyethylidene-1,1,-diphosphonic acid, diethylenetriaminepenta(methylene phosphonic acid), 2-hydroxyethylimino bis(methylene phosphonic acid), ethylene diamine tetra(methylene phosphonic acid), and mixtures thereof.  
     
     
         15 . A solution according to  claim 14  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, 1-hydroxyethylidene-1,1,-diphosphonic acid, and mixtures thereof.  
     
     
         16 . A solution according to  claim 10  containing dodecyl benzene sulfonic acid or an alkali metal salt or ammonium salt thereof.  
     
     
         17 . A solution according to  claim 10  wherein the emulsifier is a polyoxyethylene surfactant.  
     
     
         18 . A solution according to  claim 10  wherein the hydrotrope is selected from an alkylated sulfonated diphenyl oxide and an alkylated sulfonated diphenyl oxide salt.  
     
     
         19 . A solution according to  claim 18  containing a C6 alkylated sulfonated diphenyl oxide disodium salt.  
     
     
         20 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and consisting essentially of: 
 i) hydrogen peroxide in a concentration of from 0.01 to 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution;    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution;    iv) a corrosion inhibitor in a concentration of from 0.05 to 10.0 wt./wt % of the solution; and    v) the remainder to 100 wt./wt. % water.    
     
     
         21 . A solution according to  claim 20  wherein the pH is from 1 to 3.  
     
     
         22 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and consisting essentially of: 
 i) hydrogen peroxide in a concentration of from 0.01 to 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution;    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution;    iv) from 0.1 to 10 wt./wt. % of an alcohol comprising one to six carbon atoms; and    v) the remainder to 100 wt./wt. % water.    
     
     
         23 . A solution according to  claim 22  wherein the pH is from 1 to 3.  
     
     
         24 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and consisting essentially of: 
 i) hydrogen peroxide in a concentration of from 0.01 to 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution;    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution;    iv) a monocarboxylic acid or polycarboxylic acid in a concentration of from about 0.05 to about 4.0 wt./wt. %; and    v) the remainder to 100 wt./wt. % water.    
     
     
         25 . A solution according to  claim 24  wherein the pH is from 1 to 3.  
     
     
         26 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and consisting essentially of: 
 i) hydrogen peroxide in a concentration of from 0.01 to about 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution; and    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution;    iv) up to about 3 wt./wt. % of an additional component selected from the group consisting of emulsifiers, hydrotropes, and mixtures thereof;    v) a corrosion inhibitor in a concentration of from 0.05 to 10.0 wt./wt % of the solution; and    vi) the remainder to 100 wt./wt. % water.    
     
     
         27 . A solution according to  claim 26  wherein the pH is from 1 to 3.  
     
     
         28 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and consisting essentially of: 
 i) hydrogen peroxide in a concentration of from 0.01 to about 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution; and    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution;    iv) up to about 3 wt./wt. % of an additional component selected from the group consisting of emulsifiers, hydrotropes, and mixtures thereof;    v) a monocarboxylic acid or polycarboxylic acid in a concentration of from about 0.05 to about 4.0 wt./wt. %;    vi) the remainder to 100 wt./wt. % water.    
     
     
         29 . A solution according to  claim 28  wherein said pH is from 1 to 3.  
     
     
         30 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and consisting essentially of: 
 i) hydrogen peroxide in a concentration of from 0.01 to about 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution; and    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution;    iv) up to about 3 wt./wt. % of an additional component selected from the group consisting of emulsifiers, hydrotropes, and mixtures thereof;    v) a corrosion inhibitor in a concentration of from 0.05 to 10.0 wt./wt % of the solution;    vi) a monocarboxylic acid or polycarboxylic acid in a concentration of from about 0.05 to about 4.0 wt./wt. %; and    vii) the remainder to 100 wt./wt. % water.    
     
     
         31 . A solution according to  claim 30  wherein the pH is from 1 to 3.  
     
     
         32 . An aqueous disinfecting or sanitizing solution having a pH of from 1 to 7 and comprising: 
 i) hydrogen peroxide in a concentration of from 0.01 to 20 wt./wt. % of the solution;    ii) at least one phosphorus-based acid in a concentration range of from 0.05 to 8.0 wt./wt. % of the solution;    iii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal and ammonium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal and ammonium salts thereof, naphthalene sulfonic acids and alkali metal and ammonium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal and ammonium salts thereof, alkali metal C8 to C 18 alkyl sulfates, and mixtures thereof, in a concentration range of from 0.02 to 5 wt./wt. % of the solution; and    iv) a hydrotrope selected from an alkylated sulfonated diphenyl oxide and an alkylated sulfonated diphenyl oxide salt.    
     
     
         33 . A solution according to  claim 32  wherein the pH is from 1 to 3.  
     
     
         34 . A solution according to  claim 33  wherein said hydrotrope is a C6 alkylated sulfonated diphenyl oxide disodium salt.  
     
     
         35 . A solution according to  claim 33  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, phosphonic acids having 1 to 5 phosphonic acid groups, and mixtures thereof.  
     
     
         36 . A solution according to  claim 35  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, amino tri(methylene phosphonic acid), 1-hydroxyethylidene-1,1,-diphosphonic acid, diethylenetriaminepenta(methylene phosphonic acid), 2-hydroxyethylimino bis(methylene phosphonic acid), ethylene diamine tetra(methylene phosphonic acid), and mixtures thereof.  
     
     
         37 . A solution according to  claim 36  wherein the phosphorus-based acid is selected from the group consisting of phosphoric acid, 1-hydroxyethylidene-1,1,-diphosphonic acid, and mixtures thereof.  
     
     
         38 . A solution according to  claim 33  containing dodecyl benzene sulfonic acid or an alkali metal salt or ammonium salt thereof.  
     
     
         39 . A solution according to  claim 33  further comprising an emulsifier.  
     
     
         40 . A solution according to  claim 39  wherein the emulsifier is a polyoxyethylene surfactant.  
     
     
         41 . A solution according to  claim 33  wherein the solution has a hydrogen peroxide concentration of from 0.05 to 8.0 wt./wt. % of the solution.  
     
     
         42 . A solution according to  claim 41  wherein the solution has a hydrogen peroxide concentration of from 0.05 to 1.0 wt./wt. % of the solution.  
     
     
         43 . A solution according to  claim 33  containing a corrosion inhibitor in a concentration of from 0.05 to 10.0 wt./wt % of the solution.  
     
     
         44 . A solution according to  claim 33  containing from 0.1 to 10 wt./wt. % of an alcohol comprising one to six carbon atoms.  
     
     
         45 . A solution according to  claim 33  containing a monocarboxylic acid or polycarboxylic acid in a concentration of from about 0.05 to about 4.0 wt./wt. %.