Patent ID: 11917993
Assignee: LANXESS CORPORATION
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 0:
1. A method of preserving a product formulation, comprising adding 3-phenyl propanol and an organic acid or salt thereof to the product formulation, wherein the 3-phenyl propanol is added in an amount constituting at least 0.2 wt. %, based on the total weight of the product formulation;
the organic acid or salt thereof is benzoic acid, dehydroacetic acid, acetic acid, citric acid, formic acid, sorbic acid, lactic acid, sodium benzoate, potassium benzoate, sodium citrate, potassium sorbate, sodium sorbate, sodium lactate or a mixture thereof; and
said addition is sufficient to achieve a synergistic 14-day antimicrobial effect according to European Pharmacopeia 7 (EP) antimicrobial efficacy testing methodology against Aspergillus brasiliensis.