ANTIPERSPIRANT EMULSION

Abstract

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

Claims

1.-22. (canceled)

23. An antiperspirant oil-in-water emulsion, wherein the emulsion comprises: (a) aluminum chlorohydrate; (b) aluminum sesquichlorohydrate; (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.

24. The emulsion of claim 23, wherein the emulsion comprises from 5% to 30% by weight of (a), based on a total weight of the emulsion.

25. The emulsion of claim 23, wherein the emulsion comprises from 0.2% to 10% by weight of (b), based on a total weight of the emulsion.

26. The emulsion of claim 23, wherein a ratio by weight between (a) and (b) is from 2:1 to 50:1.

27. The emulsion of claim 23, wherein the emulsion comprises from 8% to 18% by weight of (c), based on a total weight of the emulsion.

28. The emulsion of claim 23, wherein (c) comprises at least one ester of a saturated monohydric C16-C60-alcohol and a saturated C8-C36-monocarboxylic acid.

29. The emulsion of claim 23, wherein the wax component (c) comprises one car 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.

30. The emulsion claim 29, wherein the emulsion comprises from 3% to 9% by weight, based on a total weight of the emulsion of 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.

31. The emulsion of claim 23, wherein (c) comprises a C20-C40-alkyl stearate.

32. The emulsion of claim 23, wherein (c) comprises hydrogenated castor oil.

33. The emulsion of claim 23, wherein (c) comprises one or more saturated linear C14-C36-carboxylic acids as wax component.

34. The emulsion of claim 23, 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.

35. The emulsion of claim 23, wherein (d) comprises one or more of PPG-14 butyl ether, PPG-15 stearyl ether, C12-15 alkyl benzoate.

36. The emulsion of claim 23, wherein the emulsion comprises from 0.5% to 3% by weight of (e), based on a total weight of the emulsion.

37. The emulsion of claim 23, wherein (e) comprises one or more C12-C18-alkanols comprising 10-30 units of ethylene oxide per molecule.

38. The emulsion of claim 23, wherein (e) comprises one or both of steareth-21 and oleth-20.

39. The emulsion of claim 23, wherein the emulsion comprises from 0.1% to 1.5% by weight of (f), based on a total weight of the emulsion.

40. The emulsion of claim 23, wherein (f) comprises steareth-2.

41. The emulsion of claim 23, wherein the emulsion further comprises one or both of cetyl alcohol and stearyl alcohol.

42. The emulsion of claim 23, wherein the emulsion is liquid at 70° C. and solid at room temperature.

Description

EXAMPLES

[0078] 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 INCI Com. 1 Com. 2 Ex. 1 Ex. 2 Ex. 3 Ex. 4 Aluminum Chlorohydrate 15.0 15.0 19 15 12.5 19 Aluminiumsequi-chlorohydrate — — 1 2.5 2.5 1 Cetyl Palmitate 6.5 6.0 6.0 6.0 6.0 6.0 Hydrogenated Castor Oil 5.5 6.0 6 6 5.5 6 PPG-14 Butyl Ether 6.4 5.0 15 15 15 — PPG-15 Stearyl Ether 10.0 10.0 — — — 15 C12-15 Alkyl Benzoate 5.3 5.1 6 6 6 6 Steareth-21 0.5 0.5 0.5 0.5 0.5 0.5 Steareth-2 0.5 0.5 0.5 0.5 0.5 0.5 Oleth-20 1.0 1.0 1.0 1.0 1.0 1.0 Fatty Acid mixture consisting of 47% 4.0 3.8 3.8 3.8 3.8 4.0 Stearic Acid, 48.5% Palmitic Acid, 2.5% Myristic Acid, 1.5% Arachidic Acid and 0.5% Oleic Acid Propylene Glycol 1.5 1.0 2 2 1.5 2 Cetearyl Alcohol 2.5 2.5 2.5 2.5 Cetyl Alcohol 1.2 1.2 Stearyl Alcohol 1.6 1.6 C20-40 Alkyl Stearate 1.0 1.0 1.0 1.0 1.0 1.0 Parfum q.s. q.s. q.s. q.s. q.s. q.s. Aqua ad 100 ad 100 ad 100 ad 100 ad 100 ad 100 Stability of the emulsion after storing Lumps suspended Lumps suspended No lumps No lumps No lumps No lumps for 8 hours at 70° C. in the emulsion in the emulsion

[0079] The examples above were prepared in the following manner:

[0080] a) Heat the oil phase including cetyl palmitate, hydrogenated castor oil, PPG-14 butyl ether and/or PPG-15 stearyl 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. [0081] b) Heat the water phase including aluminum chlorohydrate, aluminiumsequichlorohydrate, propylene glycol and water up to 85° C. [0082] 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.

[0083] Afterwards the obtained emulsions were stored at 70° C. for at least 8 hours. After 8 hours the emulsions were analyzed for lumps. Significant amounts of lumps were found in the comparative examples Com. 1 and Com. 2. The samples according to the invention, Ex.1 to Ex.4 did not show any lumps after 8 hours storing at 70° C.