COSMETIC FOAM CONTAINING WAXES AND POLYACRYLIC ACID POLYMERS

Abstract

The present invention relates to an emulsifier-free and surfactant-free cosmetic product having a pressure container with a release valve containing at least 8% by weight of one or more waxes and polyacrylic acid polymers. The pressure container further contains at least one propellant that foams and/or discharges the preparation.

Claims

1.-20. (canceled)

21. A cosmetic product, wherein the product comprises a pressure container having a release valve and containing a) a cosmetic preparation which is free of surfactants and emulsifiers and comprises, based on a total weight of the preparation (i) a total of 8% by weight to 35% by weight of one or more waxes which are different from fatty alcohols, (ii) one or more polyacrylic acid polymers; and b) one or more propellants which foam and/or discharge the cosmetic preparation.

22. The cosmetic product of claim 21, wherein the one or more waxes which are different from fatty alcohols are selected from one or more of cera microcristallina, hydrogenated jojoba oil, r hydrogenated vegetable oil.

23. The cosmetic product of claim 21, wherein a total fraction of polyacrylic acid polymers in the cosmetic preparation is from 0.02% to 2% by weight, based on the total weight of the cosmetic preparation.

24. The cosmetic product of claim 21, wherein the polyacrylic acid polymers have a viscosity as a 0.2 percent solution in water after neutralization of from 1,500 to 10,000 mPa.Math.s at a temperature of 25 C.

25. The cosmetic product of claim 21, wherein the one or more polyacrylic acid polymers are polymerized from a monomer mixture comprising the monomers of the groups (a.) acrylic acid and/or methacrylic acid; (b.) C.sub.1- to C.sub.40-alkyl acrylates and/or C.sub.1- to C.sub.40-alkyl methacrylates; and/or (c.) ethylenically unsaturated hydrophobically modified monomers selected from polyethoxylated cetyl (meth)acrylate, polyethoxylated cetearyl (meth)acrylate, polyethoxylated stearyl (meth)acrylate, polyethoxylated arachidyl (meth)acrylate, polyethoxylated behenyl methacrylate, polyethoxylated cerotyl (meth)acrylate, polyethoxylated montanyl (meth)acrylate, polyethoxylated melissyl (meth)acrylate, polyethoxylated lacceryl (meth)acrylate, polyethoxylated nonylphenol (meth)acrylate, polyethoxylated tristyrylphenol (meth)acrylate, polyethoxylated palmyl itaconate, polyethoxylated stearyl itaconate, polyethoxylated behenyl itaconate, polyethoxylated palmyl maleate, polyethoxylated stearyl maleate, polyethoxylated behenyl maleate, polyethoxylated palmyl allyl ether, polyethoxylated stearyl allyl ether, polyethoxylated behenyl allyl ether, wherein a polyethoxylated portion of the above monomers comprises from 15 to 60 repeat ethylene oxide units; with the proviso that the respective polyacrylic acid polymers of the aforementioned monomer groups (a.) to (c.) comprise either only the monomers of group (a.), only the monomers of the groups (a.) and (b.); or only the monomers of the groups (a.), (b.) and (c.).

26. The cosmetic product of claim 21, wherein the preparation comprises one or more polyacrylic acid polymers selected from carbomers and/or acrylates/C10-30 alkyl acrylate crosspolymers.

27. The cosmetic product of claim 21, wherein the one or more propellants comprise one or more of propane, butane, isobutane, pentane, isopentane, dimethyl ether, nitrogen, carbon dioxide.

28. The cosmetic product of claim 21, wherein the only propellants present therein are one or more of propane, butane, isobutane.

29. The cosmetic product of claim 21, wherein the pressure container contains from 90% by weight to 98% by weight of cosmetic preparation and 2% by weight to 10% by weight of the one or more propellants, based on a total weight of all liquids and gases present in the pressure container.

30. The cosmetic product of claim 21, wherein the cosmetic preparation has at least one melting range between 35 C. and 42 C. according to DSC.

31. The cosmetic product of claim 21, wherein the cosmetic preparation comprises one or more fatty alcohols having 6 to 22 carbon atoms at a total fraction of 0.1 to 15% by weight, based on the total weight of the cosmetic preparation.

32. The cosmetic product of claim 21, wherein the preparation further comprises one or more hydrocarbon oils selected from mineral oil, paraffin oil and isoparaffin oil.

33. The cosmetic product of claim 21, wherein the cosmetic preparation comprises cera microcristallina as wax different from fatty alcohols and paraffin oil and/or isoparaffin oil as hydrocarbon oil, a the proportion by weight of paraffin oil and/or isoparaffin oil with respect to cera microcristallina being from 1:1 to 1:3.

34. The cosmetic product of claim 21, wherein the cosmetic preparation comprises one or more plant oils selected from evening primrose oil, rice bran oil, coconut oil, almond oil, walnut oil, peach kernel oil, apricot kernel oil, avocado oil, tea tree oil, soybean oil, sesame oil, sunflower oil, tsubaki oil, palm kernel oil, mango kernel oil, cuckoo flower oil, safflower oil, macadamia nut oil, grapeseed oil, amaranth seed oil, argan oil, bamboo oil, olive oil, wheatgerm oil, pumpkin seed oil, mallow oil, hazelnut oil, safflower oil, canola oil, sasanqua oil, liquid sheabutter oil, jojoba oil, and rambutan oil.

35. The cosmetic product of claim 34, wherein a total fraction of plant oils in the cosmetic preparation is from 0.5% to 5% by weight, based on the total weight of the cosmetic preparation.

36. The cosmetic product of claim 21, wherein the cosmetic preparation has a viscosity in the range from 1000 mPa.Math.s to 10 000 mPa.Math.s, at 25 C.

37. The cosmetic product of claim 21, wherein the cosmetic preparation comprises from 9.5% to 25% by weight of the one or more waxes which are different from fatty alcohols.

38. A method of providing a foam which, on application to wet skin, deposits a lipid film on the skin and/or a method of providing a structurally stable foam, wherein the method comprises providing (i) a total of 8% by weight to 35% by weight of one or more waxes which are different from fatty alcohols, and (ii) one or more polyacrylic acid polymers in a cosmetic preparation which is free of surfactants and emulsifiers and is foamed with propellant gas, the % by weight referring to a total weight of the cosmetic preparation without the propellant gas.

39. A method of applying the cosmetic product of claim 21, wherein the method comprises withdrawing the cosmetic preparation from the pressure container, applying the withdrawn cosmetic preparation to skin moistened with water, and rinsing the applied cosmetic preparation off the skin with water.

40. A method of applying the cosmetic product of claim 21, wherein the method comprises withdrawing the cosmetic preparation from the pressure container, applying the withdrawn foamed cosmetic preparation to hirsute skin moistened with water, and shaving hair in a skin region to which the cosmetic preparation has been applied with a razor blade.

Description

COMPARATIVE EXPERIMENTS AND EXAMPLES

[0112] The examples below are intended to illustrate the present invention without limiting it. Unless otherwise stated, all quantitative data, fractions and percentages are based on the weight and the total amount or total weight of the cosmetic preparations.

TABLE-US-00001 INCI Ex. 1 Ex. 2 Ex. 3 Ex. 4 Ex. 5 Cera Microcristallina 13 10 5 Paraffinum Liquidum 12 10 Glycerol 5 5 10 15 8 Hydrogenated Coco-Glycerides 3 2 5 Acrylates/C10-30 Alkyl Acrylate Crosspolymer 0.2 0.30 0.25 0.2 0.1 Carbomer 0.02 0.03 Myristyl Alcohol 1 1 Cetearyl Alcohol 5 4 3 3 Stearyl Alcohol 2 4 Butyrospermum Parkii (Shea Butter) Oil 2 Hydrogenated Vegetable Oil 15 12 5 Prunus Amygdalus Dulcis Oil 0.5 0.5 Simmondsia Chinensis (Jojoba) Seed Oil 3 Helianthus Annuus Seed Oil 2 Cocos Nucifera (Coconut) Oil 1 Cetyl Palmitate 3 2.5 Aluminum Starch Octenylsuccinate 1 Perfume 1 1 0.8 0.6 Sodium Hydroxide for pH adjustment q.s. q.s. q.s. q.s. q.s. Phenoxyethanol 0.5 0.8 0.3 Ethylhexylglycerin 0.3 0.3 0.5 Water to 100 to 100 to 100 to 100 to 100 pH 7.0 6.5 7.2 6.8 7.0 Filling in 200 ml can: Cosmetic preparation 94% 90% 94% 92% 94% Propellant fraction 6% 10% 6% 8% 6% Propellants Propane/ Propane/ Propane/ Propane/ Propane/ butane/ butane/ butane/ butane/ butane/ isobutane isobutane isobutane isobutane isobutane Pressure rating 3.5 bar 3.0 2.7 4.2 2.7 Sensory properties of the foam Creamy, Creamy, Creamy, Creamy, Creamy, stable, stable, stable, stable, stable, fine- fine- fine- fine- fine- bubble bubble bubble bubble bubble foam foam foam foam foam Structural stability of the foam after 5 minutes Stable Stable Stable Stable Stable

[0113] The examples Ex. 1, Ex. 2, Ex. 3, Ex. 4 and Ex. 5 are inventive examples.

[0114] After application of the foam of example formula Ex. 1, this was stable under standard conditions for more than one hour and did not collapse in this time period.