Hydrogen peroxide disinfectant with increased activity
DCFirst Claim
1. An aqueous solution having a pH of from about 0.5 to about 6 and consisting essentially of i) hydrogen peroxide in a concentration of from about 0.01 to about 20 wt./wt. % of the solution, ii) at least one phosphorus-based acid in a concentration range of from about 0.05 to about 8 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, ammonium, calcium and magnesium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C6 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, naphthalene sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, alkyl or alkenyl esters or diesters of sulfosuccinic acid in which the alkyl or alkenyl groups independently contain from six to eighteen carbon atoms and alkali metal, ammonium, calcium and magnesium salts thereof, and mixtures thereof, in a concentration range of from about 0.02 to about 5 wt./wt. % of the solution.
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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 and/or hydrotrope, e.g. an alkylated sulfonated diphenyl oxide salt, an alkyl aryl polyoxyethylene surfactant, and/or a polyoxyethylene surfactant. The solution may also contain corrosion inhibitors and/or lower alcohols.
73 Citations
21 Claims
- 1. An aqueous solution having a pH of from about 0.5 to about 6 and consisting essentially of i) hydrogen peroxide in a concentration of from about 0.01 to about 20 wt./wt. % of the solution, ii) at least one phosphorus-based acid in a concentration range of from about 0.05 to about 8 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, ammonium, calcium and magnesium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C6 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, naphthalene sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, alkyl or alkenyl esters or diesters of sulfosuccinic acid in which the alkyl or alkenyl groups independently contain from six to eighteen carbon atoms and alkali metal, ammonium, calcium and magnesium salts thereof, and mixtures thereof, in a concentration range of from about 0.02 to about 5 wt./wt. % of the solution.
- 14. An aqueous solution having a pH of from about 0.5 to about 6 and consisting essentially of i) hydrogen peroxide in a concentration of from about 0.1 to about 20 wt./wt. % of the solution, ii) at least one phosphorus-based acid in a concentration range of from about 0.05 to about 8 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, ammonium, calcium and magnesium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal, ammonium calcium and magnesium salts thereof, C6 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, naphthalene sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, alkyl or alkenyl esters or diesters of sulfosuccinic acid in which the alkyl or alkenyl groups independently contain from six to eighteen carbon atoms and alkali metal, ammonium, calcium and magnesium salts thereof, and mixtures thereof, in a concentration range of from about 0.02 to about 5 wt./wt. % of the solution, and iv) an additional component selected from the group consisting of emulsifiers, hydrotropes, detergents and mixtures thereof in a concentration of from about 0.04 to about 3 wt./wt. % of the solution.
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18. An aqueous solution having a pH of from about 0.5 to about 6 and consisting essentially of i) hydrogen peroxide in a concentration of from about 0.01 to about 20 wt./wt. % of the solution, ii) at least one phosphorus-based acid in a concentration range of from about 0.05 to about 8 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, ammonium, calcium and magnesium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C6 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, naphthalene sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, alkyl or alkenyl esters or diesters of sulfosuccinic acid in which the alkyl or alkenyl groups independently contain from six to eighteen carbon atoms and alkali metal, ammonium, calcium and magnesium salts thereof, and mixtures thereof, in a concentration range of from about 0.02 to about 5 wt./wt. % of the solution, and iv) a corrosion inhibitor in a concentration of from about 0.05 to about 10 wt./wt. % of the solution.
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19. An aqueous solution having a pH of from about 0.5 to about 6 and consisting essentially of i) hydrogen peroxide in a concentration of from about 0.01 to about 20 wt./wt. % of the solution, ii) at least one phosphorus-based acid in a concentration range of from about 0.05 to about 8 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, ammonium, calcium and magnesium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C6 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, naphthalene sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, alkyl or alkenyl esters or diesters of sulfosuccinic acid in which the alkyl or alkenyl groups independently contain from six to eighteen carbon atoms and alkali metal, ammonium, calcium and magnesium salts thereof, and mixtures thereof, in a concentration range of from about 0.02 to about 5 wt./wt. % of the solution, and iv) an monocarboxylic acid, a polucarboxylix acid, or mixtures thereof, in a concentration of from about 0.05 to about 4 wt./wt. % of the solution.
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20. An aqueous solution having a pH of from about 0.5 to about 6 and consisting essentially of i) hydrogen peroxide in a concentration of from about 0.01 to about 20 wt./wt. % of the solution, ii) at least one phosphorus-based acid in a concentration range of from about 0.05 to about 8 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, ammonium, calcium and magnesium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C6 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, naphthalene sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, alkyl or alkenyl esters or diesters of sulfosuccinic acid in which the alkyl or alkenyl groups independently contain from six to eighteen carbon atoms and alkali metal, ammonium, calcium and magnesium salts thereof, and mixtures thereof, in a concentration range of from about 0.02 to about 5 wt./wt. % of the solution, and iv) an alcohol comprising one to six carbon atoms in a concentration of from about 0.1 to about 10 wt./wt. % of the solution.
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21. An aqueous solution having a pH of from about 0.7 to about 3.5 and consisting essentially of i) hydrogen peroxide in a concentration of from about 0.01 to about 20 wt./wt. % of the solution, ii) a phosphonic acid having from 1 to 5 phosphonic acid groups in a concentration of from about 0.2 to about 8 wt./wt. % of the solution, iii) an anionic alkyl aryl sulfonic acid in a concentration of from about 0.08 to about 5 wt./wt. % of the solution, and iv) an additional component selected from the group consisting of emulsifiers, hydrotropes, detergents and mixtures thereof in a concentration of from about 0.04 to about 3 wt./wt. % of the solution, said additional component including at least one polyoxyethylene surfactant and a alkylated sulfonated diphenyl oxide salt.
Specification