Skin product having continuing antimicrobial, antiviral, antiseptic, and healing properties
AssigneeAmerican Medical Research, Inc.
InventorsGriscom Bettle, William S. Coury, Berno I. Pettersson
Life of this patent
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Abstract
A composition capable of forming a film that ionically bonds to the skin comprising: one or more active agents; a nonionic or substantially nonionic first film forming component; one or more cationic surfactants comprising one or more fatty moieties that are soluble in the first film forming component; and a liquid carrier. Also provided are stable emulsions of such compositions, compositions that are especially adapted to delivering medicinal agents to the surface of the skin, and methods for preparing such compositions.
Claims20
A process for preparing a phase stable emulsion comprising:
- a. forming an aqueous phase comprising a quaternary ammonium compound as a cationic surfactant;
- b. forming a second phase comprising one or more fatty acids, and one or more fatty alcohols and/or one or more fatty esters;
- c. mixing the first and second phases to form an emulsion;
- and
- d. mixing a nitrogenous organic base with the emulsion to produce a salt of the one or more fatty acids and improve the stability of the emulsion;
- wherein:
- (a) the emulsion optionally comprises one or more surfactants, and/or highly polar compounds;
- and (b) the ratio of the sum of the moles of quaternary ammonium compounds, surfactants, and highly polar compounds, to the sum of the moles of fatty esters and fatty alcohols is from about 0.8 to about 1.2, and (c) the emulsion has a pH from about 6.5 to about 7.5.
Dependencies are inferred from the claim text.