WATER-FREE ANTIPERSPIRANT SPRAYS WITH IMPROVED SUBSTANCE RELEASE

• US 20120014897A1
• Filed: 09/26/2011
• Published: 01/19/2012
• Est. Priority Date: 04/01/2009
• Status: Active Grant

• Current Assignee: Henkel AG & Co KGaA
• Original Assignee: Henkel AG & Co KGaA
• Inventors: Banowski, Bernhard, Buse, Nadine
• Granted Patent: US 8,354,096 B2
• Time in Patent Office: Days
• US Class Current: 424/65
• CPC Class Codes: A61K 2800/31 Anhydrous
• CPC Class Codes: A61K 8/37 Esters of carboxylic acids
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61Q 15/00 Anti-perspirants or body deodorants deodorisation of air A61L9/00

Abstract

An antiperspirant composition for personal hygiene is formulated as a suspension which can be sprayed with or without a propellant, and contains at least one antiperspirant substance, 0-5 wt. % free water, based on the weight of the propellant-free composition, and triethylcitrate and at least one additional cosmetic oil, which is liquid under normal conditions, as a carrier. The weight fraction of the triethylcitrate with respect to the total amount of oils is between 13-50 wt. % based on the total weight of the propellant-free composition. The composition also includes and 0 to less than 1 wt. % cyclomethicone, based on the weight of the propellant-free composition.

Claims

1. An antiperspirant composition for personal hygiene, formulated as a suspension which is sprayable with or without a propellant, comprises:

a) at least one antiperspirant active ingredient,

b) 0-5 wt. % of free water, relative to the weight of the composition excluding propellant,

c) triethyl citrate,

d) at least one further cosmetic oil which is liquid under standard conditions as carrier,

e) 0 to less than 1 wt. % of cyclomethicone, relative to the weight of the composition excluding propellant,

wherein the proportion by weight of triethyl citrate in the total quantity of oils c) plus d) plus e), relative to the entire composition excluding propellant, amounts to 13-50 wt. %.

2. The composition according to claim 1, wherein the total quantity of composition triethyl citrate and at least one further cosmetic oil which is liquid under standard conditions d)+e) amounts to 30-95 wt. % relative to the entire composition excluding propellant.

3. The composition according to claim 1, wherein, in addition to triethyl citrate, at least one volatile non-silicone oil is present.

4. The composition according to claim 1, wherein the at least one carrier oil d) is liquid under standard conditions, and is a volatile non-silicone oil, and is selected from C₈-C₁₆ isoparaffins selected from the group consisting of isononane, isodecane, isoundecane, isododecane, isotridecane, isotetradecane, isopentadecane, and isohexadecane, and mixtures thereof.

5. The composition according to claim 4, wherein the at least one carrier oil d) is selected from the group consisting of C₁₀-C₁₃ isoparaffin mixtures with a vapor pressure at 20°

C. of approx. 300-400 Pa.

6. The composition according to claim 4, wherein the at least one C₈-C₁₆ isoparaffin is present in a total quantity of 25-50 wt. % relative to the entire composition excluding propellant.

7. The composition according to claim 4, further comprising, in addition to triethyl citrate and the at least one C₈-C₁₆ isoparaffin, at least one non-volatile cosmetic oil, selected from the group consisting of non-volatile silicone oils and non-volatile non-silicone oils, is present.

8. The composition according to claim 1, wherein the at least one non-volatile non-silicone oil is selected from esters of linear or branched saturated or unsaturated fatty alcohols having 2-30 carbon atoms with linear or branched saturated or unsaturated fatty acids having 2-30 carbon atoms, which may be hydroxylated.

9. The composition according to claim 1, wherein the at least one non-volatile non-silicone oil is a benzoic acid ester of linear or branched C_8-22 alkanols selected from the group consisting of isopropyl palmitate, isopropyl myristate, isopropyl stearate, hexyldecyl stearate, hexyldecyl laurate, isononyl isononanoate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, isooctyl stearate, isononyl stearate, isocetyl stearate, isononyl isononanoate, isotridecyl isononanoate, cetearyl isononanoate, 2-ethylhexyl laurate, 2-ethylhexyl isostearate, 2-ethylhexyl cocoate, 2-octyldodecyl palmitate, butyloctanoic acid 2-butyloctanoate, diisotridecyl acetate, n-hexyl laurate, n-decyl oleate, oleyl oleate, oleyl erucate, erucyl oleate, C₁₂-C₁₅ alkyl lactate, di-C₁₂-C₁₃-alkyl malate, C₁₂-C₁₅ alkyl benzoate, benzoic acid isostearyl ester, ethylhexyl benzoate and benzoic acid octyldodecyl ester.

10. The composition according to claim 1, wherein component d) is at least one mixture of d)i) at least one volatile C₈-C₁₆ isoparaffin and d)ii) at least one ester of linear or branched saturated or unsaturated fatty alcohols having 2-30 carbon atoms with linear or branched saturated or unsaturated fatty acids having 2-30 carbon atoms, which may be hydroxylated, or is at least one mixture of d)i) of at least one volatile C₈-C₁₆ isoparaffin and d)ii) at least one benzoic acid ester of linear or branched C_8-22 alkanols.

11. The composition according to claim 5, wherein triethyl citrate/ester/C₁₀-C₁₃ isoparaffin are present in ratios by weight of triethyl citrate/ester/C_10-13 isoparaffin of (1-1.3):

(0.6-1);

(1-3).

12. The composition according to claim 1, wherein at least one organosiloxane-oxyalkylene copolymer is present, which is selected from the group consisting of a linear polysiloxane-polyoxyethylene-polyoxypropylene block copolymer with the INCI name PEG/PPG-22/24 Dimethicone and a linear polysiloxane-polyoxyethylene-polyoxypropylene block copolymer with the INCI name PEG/PPG-10/2 Dimethicone, and mixtures thereof.

13. The composition according to claim 12, wherein the at least one organosiloxane-oxyalkylene copolymer is present in a total quantity of 0.01-5 wt. % relative to the total weight of the composition excluding propellant.

14. The composition according to claim 1, wherein the proportion by weight of the total quantity of triethyl citrate in the total oil content c) plus d) plus e) amounts to 15-40 wt. %.

15. The composition according to claim 1, wherein the oil mixture c) plus d) is selected from triethyl citrate/2-ethylhexyl palmitate/isodecane/isoundecane/isododecane/isotridecane, triethyl citrate/hexyldecyl laurate/isodecane/isoundecane/isododecane/isotridecane, triethyl citrate/2-ethylhexyl stearate/isodecane/isoundecane/isododecane/isotridecane, triethyl citrate/isopropyl myristate/isodecane/isoundecane/isododecane/isotridecane, triethyl citrate/isopropyl palmitate/isononane/isodecane/isoundecane/isododecane/isotridecane, triethyl citrate/2-ethylhexyl laurate/isodecane/isoundecane/isododecane/isotridecane, triethyl citrate/C₁₂-C₁₅ alkyl lactate/isodecane/isoundecane/isododecane/isotridecane, triethyl citrate/C₁₂-C₁₅ alkyl benzoate/isodecane/isoundecane/isododecane/isotridecane and triethyl citrate/di-C₁₂-C₁₃-alkyl malate/isodecane/isoundecane/isododecane/isotridecane.

16. A method for reducing and/or regulating sweating and/or body odor, comprising applying an effective quantity of the composition according to claim 1 onto the skin.