ANTIPERSPIRANT ACTIVE EMULSION

Abstract

The present invention belongs to the cosmetic field and relates to a cosmetic oil in water emulsion in stick form

Claims

1-24. (canceled)

25. An antiperspirant oil-in-water emulsion, wherein the emulsion comprises: (a) at least one antiperspirant active aluminum compound; (b) palmitamidopropyl trimonium chloride; (c) at least one lipid and/or wax component having a melting point of >50° C. (d) at least one oil which is liquid at 20° C.; (e) at least one nonionic emulsifier having an HLB value of higher than 7; (f) at least one nonionic emulsifier having an HLB value of higher than 1.0 and lower than or equal to 7.0; and (g) from 30% to 50% by weight of water, based on a total weight of the emulsion.

26. The emulsion of claim 25, wherein (a) comprises one or more of aluminum chlorohydrate; aluminum sesquichlorohydrate; aluminum zirconium chlorohydrate and a aluminum zirconium chlorohydrate glycine complex.

27. The emulsion of claim 25, wherein the emulsion comprises from 5% to 30% by weight of (a), based on a total weight of the emulsion.

28. The emulsion of claim 25, wherein (a) consists of aluminum chlorohydrate.

29. The emulsion of claim 25, wherein the emulsion comprises from 0.1% to 5% by weight of (b), based on a total weight of the emulsion.

30. The emulsion of claim 25, wherein the emulsion comprises from 8% to 18% by weight of (c) based on a total weight of the emulsion.

31. The emulsion of claim 25, wherein the wax component (c) comprises at least one ester of a saturated monohydric C16-C60-alcohol and a saturated C8-C36-monocarboxylic acid.

32. The emulsion of claim 25, wherein the wax component (c) comprises one or more esters of a saturated, branched or unbranched alkanecarboxylic acid having a chain length of from 12 to 24 carbon atoms and a saturated, branched or unbranched alcohol having a chain length of from 16 to 50 carbon atoms.

33. The emulsion of claim 32, wherein the one or more esters of a saturated, branched or unbranched alkanecarboxylic acid having a chain length of from 12 to 24 carbon atoms and a saturated, branched or unbranched alcohol having a chain length of from 16 to 50 carbon atoms are present in a concentration of from 3% to 9% by weight, based on a total weight of the emulsion.

34. The emulsion of claim 25, wherein (c) comprises a C20-C40-alkyl stearate.

35. The emulsion of claim 25, wherein (c) comprises hydrogenated castor oil,

36. The emulsion of claim 25, wherein (c) comprises one or more saturated linear C14-C36-carboxylic acids as wax component.

37. The emulsion of claim 25, wherein (c)comprises a C20-C40-alkyl stearate.

38. The emulsion of claim 25, wherein (d) comprises at least one addition product of at least 6 ethylene oxide and/or propylene oxide units onto a mono- or polyhydric C3-22-alkanol.

39. The emulsion of claim 25, wherein (d) comprises one or more of PPG-14 butyl ether. PPG-15 stearyl ether and C12-15 alkyl benzoate

40. The emulsion of claim 25, wherein the emulsion comprises from 0.5% to 3% by weight of (e), based on a total weight of the emulsion.

41. The emulsion of claim 25, wherein(e) comprises one or more C12-C18-alkanols comprising 10-30 units of ethylene oxide per molecule.

42. The emulsion of claim 25, wherein the emulsion comprises from 0.1% to 1.5% by weight of (f), based on a total weight of the emulsion,

43. The emulsion of claim 25, wherein (f) comprises steareth-2.

44. The emulsion of claim 25, wherein the emulsion is liquid at 70° C. and solid at room temperature.

Description

EXAMPLES

[0083] The following examples should illustrate the compositions of this invention, without intending to limit the invention to these examples. The numerical values in the examples are percentages by weight, based on the total weight of the preparations.

TABLE-US-00001 Ingredient Com. 1 Ex. 1 Aluminum 15 15 Chlorohydrate Palmitamidopropyltrimonium — 0.6 Chloride Cetyl Palmitate 6 6 Hydrogenated Castor 6 6 Oil PPG-14 Butyl Ether 15 15 C12-15 Alkyl 5.6 5.6 Benzoate C20-40 Alkyl Stearate 1 1 Steareth-21 0.5 0.5 Steareth-2 0.5 0.5 Oleth-20 1.0 1.0 Fatty Acid mixture 1.2 1.2 consisting of 47% Stearic Acid, 48.5% Palmitic Acid, 2.5% Myristic Acid, 1.5% Arachidic Acid and 0.5% Oleic Acid Propylene Glycol 2 2.4 Cetearyl Alcohol 2.5 2.5 Parfum q.s. q.s. Aqua ad ad 100 100 Stability of the Lumps No emulsion after storing suspended lumps for 4 hours at 70° C. in the emulsion

[0084] The examples above were prepared in the following manner: [0085] a) Heat the oil phase including cetyl palmitate, hydrogenated castor oil, palmitamidopropyltrimonium chloride, PPG-14 butyl ether and C12-15 alkyl benzoate, steareth-21, steareth-2, oleth-20, palmitic acid+stearic acid+myristic acid+arachidic acid+oleic acid, cetearyl alcohol or cetyl alcohol and stearyl alcohol and C20-40 alkyl stearate up to 90° C. [0086] b) Heat the water phase including aluminum chlorohydrate, propylene glycol and water up to 85° C. [0087] c) Bring both phases together under homogenizing to build the emulsion and then cool down to 70° C. and add the perfume and homogenize a second time.

[0088] Afterwards the obtained emulsions were stored at 70° C. for at least 4 hours. After 4 hours the emulsions were analyzed for lumps. Significant amounts of lumps were found in the comparative example Com. 1. The samples according to the invention Ex. 1 did not show any lumps after 4 hours storing at 70° C. Ex. 1 did also not show lumps after 8 hours storing at 70° C.

[0089] Further example formulations:

TABLE-US-00002 Ingredient Ex. 2 Ex. 3 Ex. 4 Ex. 5 Ex. 6 Ex. 7 Aluminum Chlorohydrate 15 0 17 17 0 17 Aluminum 0 15 0 0 15 0 Sesquichlorohydrate Palmitamidopropyl- 0.8 0.5 1 0.6 1.2 1.2 trimonium Chloride Cetyl Palmitate 7 6 5 6 6 5 PPG-14 Butyl Ether 18 15 16 15 15 15 Hydrogenated Castor Oil 5 6 7 6 6 6 C12-15 Alkyl Benzoate 7 5.6 6 5.6 5.6 5.6 C20-40 Alkyl Stearate 0.9 0.9 1.1 1 1.1 1 Steareth-21 0.55 0.6 0.5 0.5 0.4 0.5 Steareth-2 0.55 0.6 0.5 0.5 0.6 0.5 Oleth-20 1.1 0.9 1 0.8 1 1.0 Fatty Acid mixture 4 3.5 3.8 3.8 4 3.8 consisting of 47% Stearic Acid, 48.5% Palmitic Acid, 2.5% Myristic Acid, 1.5% Arachidic Acid and 0.5% Oleic Acid Parfume q.s q.s q.s q.s q.s q.s Propylene Glycol 2.0 2.2 1.5 2.0 1.0 2.0 Cetearyl Alcohol 3 2.5 3 2.5 2.8 2.5 Aqua Ad. Ad. Ad. Ad. Ad. Ad. 100 100 100 100 100 100