Compositions of pyrithione metal salts and undecylenic acid alkylolamide derivatives
AssigneeREWO Chemische Werke GmbH
InventorsWilhelm Melloh, Robert Tanck
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Abstract
Antimicrobial compositions useful in the preparation of cosmetic formulations, including preparations effective for the treatment of dandruff, are provided. The antimicrobial compositions of the invention consist of a pyrithione compound in combination with an undecylenic acid monoalkylolamide sulfosuccinate half ester.
Claims10
An antibactericidal and antifungicidal composition consisting essentially of 50% to 95%, by weight, undecylenic acid monoalkylolamine sulfosuccinate half ester of the formula ##STR3## wherein n is 2 to 3 and Me represents a metal and 5% to 50%, by weight, pyrithione compound selected from the group consisting of sodium pyrithione, zinc pyrithione, 2,2'-dithiobis(pyridine-1-oxide) or the magnesium sulfate adduct of 2,2'-dithiobis(pyridine-1-oxide).
An antidandruff preparation containing up to 10%, by weight based on the total formulation, of an antibactericidal and antifungicidal composition consisting of 50% to 95%, by weight, undecylenic acid monoalkylolamide sulfosuccinate half ester of the formula ##STR4## wherein n is 2 to 3 and Me represents a metal and 5% to 50%, by weight, pyrithione compound selected from the group consisting of sodium pyrithione, zinc pyrithione, 2,2'-dithiobis(pyridine-1-oxide) or the magnesium sulfate adduct of 2,2'-dithiobis(pyridine-1-oxide).
A method of imparting antibactericidal and antifungicidal activity to a cosmetic formulation by incorporating therein an effective amount of a composition consisting of 50% to 95%, by weight, undecylenic acid monoalkylolamide sulfosuccinate half ester of the formula ##STR5## wherein n is 2 to 3 and Me represents a metal and 5% to 50%, by weight, pyrithione compound selected from the group consisting of sodium pyrithione, zinc pyrithione, 2,2'-dithiobis(pyridine-1-oxide) or the magnesium sulfate adduct of 2,2'-dithiobis(pyridine-1-oxide).
Dependencies are inferred from the claim text.