Synergistic preservative/personal care composition containing an alkylene glycol ester
AssigneeArch UK Biocides Limited
InventorsJames Clarke, Louise Reay, Samantha Jane Thomas, Philip Lewis Roebuck, Jake Campbell, Neil Scott Shaw
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Abstract
Provided herein are preservative compositions containing a preservative agent with an alkylene glycol ester. Also provided are method for increasing the efficacy of preservative agents and methods for reducing the minimum amount of preservative agent needed for effective preservation activity in end-use formulations.
Claims32
A preservative composition comprising
- (i) a preservative agent selected from the group consisting of phenoxyethanol, bis (3-aminopropyl) dodecylamine, didecyl dimethyl ammonium chloride, sodium benzoate, lactic acid, benzyl alcohol, benzisothiazaolinone, sorbic acid, and dehydroacetic acid, or a salt thereof;
- and
- (ii) a mixture of at least one propylene glycol monocaprylate and propylene glycol dicaprylate;
- wherein the mixture of at least one propylene glycol monocaprylate and propylene glycol dicaprylate is present in an amount to sufficiently increase the efficacy of the preservative agent as compared to the preservative agent alone.
A method for increasing the efficacy of a preservative agent against microorganisms in an end-use formulation, said method comprising providing an end-use formulation and a preservative agent, adding an effective amount of a mixture of at least one propylene glycol monocaprylate and propylene glycol dicaprylate to the preservative agent and end use formulation to increase the efficacy of the preservative agent in the end-use formulation, as compared to an equal amount of preservative agent without the mixture of at least one propylene glycol monocaprylate and propylene glycol dicaprylate in the end-use formulation, wherein the preservative agent is selected from the group consisting of phenoxyethanol, bis(3-aminopropyl) dodecylamine, didecyl dimethyl ammonium chloride, sodium benzoate, lactic acid, benzyl alcohol, benzisothiazolinone, sorbic acid, and dehydroacetic acid, or a salt thereof.
A preservative composition comprising
- (i) phenoxyethanol;
- and
- (ii) a mixture of at least one propylene glycol monocaprylate and propyleneglycol dicaprylate;
- wherein phenoxyethanol and the mixture of at least one propylene glycol monocaprylate and propylene glycol dicaprylate are comprised in the preservative composition at a weight ratio of from 1:1 to 6:1.
A method for increasing the efficacy of a preservative agent against microorganisms in an end-use formulation, the method comprising providing an end-use formulation and a preservative agent, adding an effective amount of a mixture of at least one propylene glycol monocaprylate and propylene glycol dicaprylate to the preservative agent and end use formulation to increase the efficacy of the preservative agent in the end-use formulation, as compared to an equal amount of preservative agent without the mixture of at least one propylene glycol monocaprylate and propylene glycol dicaprylate in the end-use formulation,
- wherein the preservative agent is phenoxyethanol, and
- wherein the weight ratio of phenoxyethanol and the mixture of at least one propylene glycol monocaprylate and propylene glycol dicaprylate is from 1:1 to 6:1.
Dependencies are inferred from the claim text.