Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Hair coloring
Reexamination Certificate
2001-09-27
2003-02-25
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Hair coloring
C424S064000, C424S070100
Reexamination Certificate
active
06524565
ABSTRACT:
RELATED APPLICATIONS
This application claims priority to German Patent Application No. 101 368 83.6, filed Jul. 24, 2001.
BACKGROUND
The present invention relates to a cosmetic product for hair, such as eyelash hair and eyebrow hair and decorative cosmetic with particular water resistance and wear (transfer) resistance.
From U.S. Pat. No. 5,925,337 a waterproof mascara composition is known which contains 2-40% by weight of a wax, 5-15% by weight of a thickening agent, 35-50% by weight of a volatile organic solvent and 1-35% by weight of a water-soluble film-forming agent, wherein the last-named agent may e.g. also be an acrylate polymer. The composition does not contain any emulsifier.
SUMMARY OF THE INVENTION
One embodiment of the present invention includes a water-resistant cosmetic gel. The gel comprises a stable mixture, comprising a water-emulsifiable, film-forming agent selected from one or more of an acrylate copolymer or acrylic or methacrylic acid or an ester thereof, a water-immiscible aliphatic hydrocarbon solvent, a non-ionic emulsifier and water; a cosmetic wax; a rheology modifier; a pigment phase; a volatile organic solvent; an oil soluble polymeric film-former; a silicon resin and a filler. The pigment comprises one or more of mineral pigments, organic pigments, pearl pigments, surface-coated pigments and mixtures thereof.
Another embodiment of the present invention includes a cosmetic gel. The cosmetic gel comprises a stable mixture comprising ethyl acrylate and methyl methacrylate in a concentration of about 24.5% by weight of the gel and isododecane in a concentration of about 50% by weight of the gel.
Another embodiment of the present invention includes an eyebrow color cosmetic. The eyebrow color cosmetic comprises a mixture comprising Carnauba wax, beeswax, castor wax, microcrystalline wax and PVP/Eicosane copolymer. The eyebrow color cosmetic also includes a pigment in a concentration of about 6% of the cosmetic. Other ingredients include trimethylsiloxysilicate and decamethylcyclopentasiloxane and the gel of the present invention.
One other embodiment of the present invention includes a method for imparting elasticity and softness to a cosmetic. The method comprises providing a film-forming agent comprising an acrylate copolymer or acrylate derivative and a non-ionic emulsifier to form a mixture. The method also includes heating the mixture to a temperature f 45 to 50 degrees Centigrade to form an emulsion. The method further includes mixing the emulsion with a volatile aliphatic hydrocarbon solvent or a volatile silicone derivate and homogenizing to form a two-phase liquid system. The method further includes cooling the two-phase liquid system with rapid mixing to form a homogeneous gel and mixing the gel with a cosmetic formulation to soften and increase elasticity of the cosmetic formulation.
DETAILED DESCRIPTION
The present invention provides a new cosmetic product for hair and a decorative cosmetic which, due to its special structure, is suitable for forming a soft and elastic product with waterproof characteristics and improved prolonged wear.
According to the invention, the cosmetic product for hair and decorative cosmetic which comprises
1-45% by weight of a stable mixture of a water-emulsifiable, film-forming agent on the basis of an acrylate copolymer or of acrylic or methacrylic acid or an ester thereof, a water-immiscible aliphatic hydrocarbon solvent, a non-ionic emulsifier and water;
1-45% by weight of a cosmetic wax;
0.1-10% by weight of a rheology modifier;
0.1-30% by weight of a pigment phase, comprising mineral pigments, organic pigments, pearl pigments, surface-coated pigments and mixtures thereof;
51-90% by weight of a volatile organic solvent;
1-15% by weight of an oil soluble polymeric film-former;
0.01-30% by weight of a silicon resin;
0.01-20% by weight of a filler;
and wherein all percents are related to the total weight of the cosmetic composition.
The stable mixture with an acrylate copolymer, a hydrocarbon solvent, an emulsifier and water preferably contains 0.01-30% by weight of a film-forming agent on the basis of an acrylate copolymer or acrylic or methacrylic acid or an ester of acrylic or methacrylic acid, which agent is emulsifiable with water; 0.01-35% by weight of an aliphatic hydrocarbon solvent or a volatile silicone derivate, both of which are not miscible with water and are emulsifiable with water-based ingredients and/or with ingredients on the basis of organic solvents in the presence of an emulsifier; 0.01-2% by weight of a non-ionic emulsifier; and 0.1-30% by weight of water; and wherein the composition has the structure of a gel. All percents are related to the total weight of the cosmetic product.
Advantageously, alkoxylated alcohols, ethoxylated alcohols, polyglycerine esters and mixtures thereof can be used as emulsifier. The said substances are non-ionic emulsifiers which contain e.g. a polyol group, a polyalkylglycol ether group or a combination thereof, such as e.g. addition products of 2-30 mole ethylene oxide to linear fatty alcohols having 8-22 carbon atoms and to fatty acids having 12-22 carbon atoms, as hydrophillic group. The said substances further include polyglycerine esters, such as e.g. polyglycerine ricinoleate or polyglycerine poly-12 hydroxystearate, and mixtures of these different substance classes.
A preferred emulsifier is, for example, Laureth-20, Laureth-23, Oleth-20, Steareth-20, Steareth-50, Ceteareth-20, Ceteareth-30.
An ethyl acrylate/methyl methacrylate copolymer can be used as acrylate copolymer, for example.
It is particularly preferred that the film-forming agent be an ethyl acrylate/methyl methacrylate copolymer in which the ratio of ethyl acrylate units to methyl methacrylate units in the polymer is in the range of 7.5-8.5:1.8-2.3.
Acrylic acid, methacrylic acid or their esters also can be used (here called “acrylate derivates”).
A preferred range for the acrylate copolymer in the gel is between 0.5 and 46% by weight, particularly 0.25 to 23% by weight related to the total weight of the cosmetic product.
Isoparaffins e.g. isododecane, pentane, hexane, decane or special petroleum distillates etc. are preferably used as aliphatic hydrocarbon solvent which is not miscible with water are preferred in the stable mixture with gel structure. Isododecane is special preferred.
A preferred range for the aliphatic hydrocarbon solvent or the volatile silicone derivate in the stable mixture with the gel structure is between 55 and 90% by weight, related to the total weight of the cosmetic product.
Advantageously, a compound such as cyclopentasiloxane or trimethylsiloxysilicate or a mixture thereof can be used as volatile silicone derivate. Dimethicone or trimethylsiloxysilicate are preferred silicone derivatives.
A preferred silicone derivate is e.g. deca-, methyl-, cyclo-, penta-, siloxy-, siloxane (Silicone SS4230).
The preferred water content is in the range of 1.0 to 40% by weight, particularly 1.0 to 20% by weight.
A preferred wax is a natural plant wax, animal wax, natural and synthetic mineral wax and synthetic wax. The waxes may be selected among carnauba wax, candelilla wax, ozokerite, beeswax, montan wax, wool wax, ceresine, micro-waxes, paraffin waxes, petrolatum, silicone, polyethyleneglycol(ester) waxes.
Pigments, pigment mixtures or powders with a pigment-like effect, also including those with a pearl-gloss effect, may include, for example, iron oxides, aluminum silicates such as ochre, titanium (di)oxide, mica, kaolin, manganese containing clays such as umber and red bole, calcium carbonate, French chalk, mica-titanium oxide, mica-titanium oxide-iron oxide, bismuth oxychioride, nylon beads, ceramic beads, expanded and non-expanded synthetic polymer powders, powdery natural organic compounds such as milled solid algae, milled plant parts, encapsulated and non-encapsulated cereal starches and mica-titanium oxide-organic dye and other surface-treated particles.
A preferred volatile organic solvent is a hydrocarbon solvent as described above or a volatile silicone derivate.
A
Cernasov Domnica
Loginova Yelena
Macchio Ralph
Coty B. V.
Howard S.
Page Thurman K.
Schwegman Lundberg Woessner & Kluth P.A.
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