Use of citric acid esters as corrosion inhibitor in alcoholic cosmetic compositions that can be sprayed as an aerosol
AssigneeHenkel AG & Co. KGaA
InventorsThomas DOERING, Gertraud TECKENBROCK
Life of this patent
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Abstract
The present invention relates to the use of esters of citric acid as corrosion inhibitors in alcoholic cosmetic compositions containing water and electrolyte and are sprayable from metallic aerosol containers.
Claims16
An ester of citric acid having the formula (I)
- wherein
- R1 to R3, independently of each other, denote a C1-C10-alkyl group, and
- R4 denotes hydrogen or a C1-C4-alkyl group,
- wherein the ester is utilized as a corrosion inhibitor in alcoholic cosmetic compositions which contain comprises at least one propellant, at least one electrolyte in a total amount of from about 0.01 to about 1.0 wt. % and water in a total amount of from about 0.02 to about 2.0 wt. %, relative to the total weight of the alcoholic cosmetic composition in each case.
Method for corrosion inhibition of metallic aerosol containers and/or valve disks, wherein an alcoholic composition having at least one propellant, at least one electrolyte in total amount of from about 0.01 to about 1.0 wt. % and water in a total amount of from about 0.02 to about 2.0 wt. %, relative to the total weight of the alcoholic cosmetic composition in each case, are included with an ester of citric acid having the formula (I)
- wherein
- R1 to R3, independently of each other, denote a C1-C10-alkyl group, and R4 denotes hydrogen or a C1-C4-alkyl group,
- mixed and filled in an aerosol can which is then charged with a propellant and sealed by employing a valve with a valve disk.
An alcoholic cosmetic composition, comprising:
- an ester of citric acid having the formula (I),
- wherein
- R1 to R3, independently of each other, denote a C1-C10-alkyl group, and
- R4 denotes hydrogen or a C1-C4-alkyl group;
- at least one propellant;
- at least one electrolyte in a total amount of from about 0.01 to about 1.0 wt. %;
- and
- water in a total amount of from about 0.02 to about 2.0 wt. %;
- wherein each are relative to the total weight of the alcoholic cosmetic composition;
- and
- wherein the ester is utilized as a corrosion inhibitor in the alcoholic cosmetic composition.
Dependencies are inferred from the claim text.