Stabilized cationic ammonium compounds for topical compositions
AssigneeConopco, Inc.
InventorsVan Au, Stephen Alan Madison, Katherine Mary Thompson
Life of this patent
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Abstract
Stabilized cationic ammonium compounds are described. The compounds are stabilized with metal chelators that impede the generation of nitrogen comprising groups from the cationic ammonium compounds.
Claims10
A composition for topical application consisting of 1,2-dihydroxypropyl trimonium chloride and a metal chelator, selected from the group consisting of hexamethylenediaminetetramethylene phosphonic acid and a mixture thereof and further wherein the metal chelator does comprise diethylenetriaminepentacetic acid, triethylenetetraminehexacetic acid, salts thereof or mixtures thereof.
A composition consisting of:
- (a) a cosmetically acceptable carrier;
- and
- 1,2-dihydroxypropyl trimonium chloride and a metal chelator selected from the group consisting of hexamethylenediaminetetramethylene phosphonic acid, diethylenetriaminepentaacetic acid, triethylenetetraaminehexacetic acid, salts thereof and mixtures thereof.
A method for stabilizing 1,2-dihydroxypropyltrimonium chloride consisting of the steps of contacting 1,2-dihydroxypropyltrimonium chloride with a metal chelator.
Dependencies are inferred from the claim text.