MXPA96004132A - Cosmetic compositions in po - Google Patents

Abstract

A cosmetic composition in the form of a powder comprising a branched chain aliphatic hydrocarbon having a weight average molecular weight of from about 100 to about 15,000 and the remainder of the composition comprising one or more selected cosmetic powder base components is disclosed. of pigments, opaque finishing agents, fillers and binders and mixtures thereof. The compositions provide improved adeshesion to the skin, increased retention and coverage, and reduced detachment.

Description

COSMETIC POWDER COGIPOSITIONS TECHNICAL FIELD The present invention relates to powder cosmetic compositions. In particular, it relates to cosmetic compositions in olvo for purposes of make-up and the like that provide improved adhesion to skin, increased retention and coverage, and reduced detachment. L O BACKGROUND OF THE INVENTION Compositions for make-up are generally available in the form of liquid or cream suspensions, emulsions, gels, anhydrous oil and wax compositions or pressed powders and solids. Makeup is usually applied to the face on two < , tapas. In a first stage, a base of liquid or t: rorna is applied. This is followed by an application of a composition in A powder, whose function is to impart a smooth finish to the face, covering minor visible imperfections and shine. IO88 / 00039 discloses a pressed facial cosmetic powder comprising a mixture of humectant and oil-absorbing clays, filler, dry binder and liquid binder. The patent of E.U.fl. No. 4,804,532 mentions a facial cosmetic powder that uses crystallized silica at a concentration much lower than that used in the prior art impositions. This powder, used as a cover or a facial cover, is said to be effective in hiding skin wrinkles, lines and pores. The composition is a mixture of a color phase and a Luyen te phase., The color phase is formed by mixing crystalline silica with color-before, the resulting color phase is mixed with the diluted phase, specifically formed from of such nacreous materials (talcum and mica, to form the composition) The pressed and loose cosmetic powder compositions for face application are well known to help provide good coverage and appearance of the hair with reduced tightening, especially when used with bases, however, it would be desirable to improve the characteristics of skin such as adhesion to the skin, retention and improved coverage of cosmetic powder compositions.

It would also be desirable to provide a powder composition which has prolonged topical anticancer and / or antibacterial activity. There are many compounds known to have anti-acne and / or antibactepan properties when applied topically to the skin. A commonly used keratogenic agent that has anti-acne activity is salicylic acid. Zinc oxide is also known for use in anti-acne compositions. CN-R-L032902 describes a powder for treatment and protection against skin diseases containing b rax, zinc oxide, benzoic acid, talcum powder and salic acid.

/ Accordingly, a main object of this invention is to provide you with a powdery cosmetic composition that fills skin adhesion, enhanced retention and coverage and reduced detachment. Also, an object of the present invention is to provide a cosmetic powder composition that < It has anti-acne activity for extended periods.

BRIEF DESCRIPTION OF THE INVENTION U) In accordance with the present invention there is provided a cosmetic composition in powder form comprising: (a) from about 0.01% to about 20% by weight of silica with or mixtures of silicones, silicones or mixtures of silicones comprising a polymer of alkylrnetilsi loxane that has the formula.

CH3- - CH3 where x has a value of l to about 1,000, and has a value of 0 to 1,000 and R is selected from H and C alkyl? '> ! ", C50; and (b) this 1 complying one or more cosmetic powder base components selected from pigments, opaque finishing agents, fillers and binders, and Mixtures of Mixtures. The present invention provides improved skin adhesion, coverage and wear characteristics.The preferred preferred embodiments also provide excellent anti-acne activity In accordance with another aspect of the present invention, a cosmetic composition is provided in the form of a powder comprising: (a) from about 0.1% to about 20% by weight of aliphatic + branched chain hydrocarbon having a weight average molecular weight of about LOO to * vr ~ ox i rnada between 15.0 0; and (b) the remainder of the composition comprising one or more cosmetic powder base components selected from pigments, opaque finishing agents, fillers and agglomerates and mixtures thereof. All levels and ratios are by weight with respect to the total composition, unless otherwise indicated. The chain length, the degrees of alkoxylation and the ^ "" Molecular so are also specified on an average weight basis.

DETAILED DESCRIPTION OF THE INVENTION The powder cosmetic composition according to one aspect of the present invention comprises a Silicon or mixtures of silons together with one or more cosmetic based powder components inclusive of pigments, fillers and glues. In accordance with this first aspect of the present invention, a first essential component is a silicone 7 mixture of silicones. The silicone or silicone mixture used herein comprises an alkyl Imethylsiloxane polymer having J formula: CH3-- --CH3 and on where x has a value of about L to approximately '', 000, and has a value of 0 to 1,000 and R is selected from H and Ci-C50 alkyl - In preferred embodiments, R is most preferably an alkyl group of C4-C2 -; .. The alkylmetisiloxanes suitable for use herein are commercially available from Dow Corning Corporation. Particularly for use in the compositions < The powder of the present invention is the cosmetic fluid Dow Corning 2502 which is known by its designation OTF A as twenty - . 20 - t? ] imet 1 cona. 1.1 Silicon or silicone mixture is present in the compositions of the invention at a level of from about 0.01% to about 20%, preferably from about 5% to about 10% by weight with respect to the composition. : > Also suitable for use herein are mixtures of alkymethyl isi loxanes with one or more materials as described below. The powder compositions according to the invention also preferably comprise a branched-chain hydrocarbon having a molecular weight of from about 100 to about 15,000, preferably from about 200 to about 1,000. The branched-chain aliphatic hydrocarbon is preferred herein from the viewpoint of providing improved adhesion to the skin and can be used either alone or in combination with the above-mentioned silicone or mixture of polyols. The branched-chain aliphatic hydrocarbon is - < It can be selected from isododecane, isohexadecane, isoeicosane, sooctahexacontane, isohexapentacontahoctane and isopentaconta octactane, and mixtures thereof. Suitable for use herein are branched-chain aliphatic hydrocarbons sold under the tradename Perrnetil (RTM) and are commercially available from Inc., P.O. Box 735, South Plainfield, N.J. 07080, E.U.A. Particularly suitable herein from the viewpoint of adhesion to the skin, "bleaching, coverage, retention and detachment is Permethyi '.02A which is known chemically as isoeicosane. The compositions herein also comprise one or more powdered components of Based on selected cosmetics of pigments, fillers and binders, and mixtures thereof, it will be appreciated that many of the conventional components of cosmetic powder compositions have more than one functionality and therefore can be classified under more than one functional type, Cg., 2, talc and z nc oxide, all acting as pigments and fillers Zinc oxide is also &particularly useful herein as an anti-carbon component. In general, these other cosmetic base powder components generally comprise up to about 39% by weight, preferably about 20% by weight. r from 60% to about 98% by weight of the composition. Pigments suitable for use herein may be inorganic and / or organic. Also included within the term pigment are materials that have a low color or luster such as opaque finishing agents, and also light dispersing agents Examples of suitable pigments are iron oxides, acylglutamate-iron oxides, ultramarine blue, colorants of DSC, carmine and mixtures thereof. The powder compositions may also include at least one opaque finishing agent. The function of the opaque finishing agent is to hide defects in the p and reduce bri and. Such cosmetically acceptable inorganic agents, ie, those included in CTFP Cosmetic Tongredient Dictionnaire, 'CTFA Cosmetic Ingredient Dictionary', third edition, co or silica, hydrated silica, slurry-treated silica spheres, mica, talc, full polyeth, calcium silicate, titanium dioxide, bentonite, hectorite, kaolin, clay, earth diat acea, attapulgite, zinc oxide and sirniLares can be used. Of particular utility as an opaque finish agent is a low luster pigment such as mica tincture (mica coated with titanium dioxide) coated with sulate, and barium. Of the inorganic components useful as opaque finishing agent, low gloss pigment, talc, hydrated silica, kaolin, titanium dioxide and mixtures thereof are particularly preferred. Materials suitable for use herein as Light scattering agents can generally be described as inorganic materials of spherical shape having a particle size of up to about LOO microns, preferably from about 5 to about 50 microns. microns, for example spherical silica particles. The total concentration of high gloss coloring agents in the cosmetic powder compositions can be from about 0.01% to about 30% by weight, preferably from about L% to about 20%, and preferably still from about 1% to about 15% by weight with respect to the total composition, the exact concentration depending to a certain degree on the specific mixture <; ** ••? Selected pigments to achieve the desired shadows. Preferred compositions contain from about 0.1% to about 5% by weight of iron oxides. Also suitable for use herein, especially from the standpoint of wetting, skin sensation, skin appearance and emulsion compatibility are the treated pigments. The pigments can be treated with compounds such as amino acids (v.gr-., Glycine), sicles, lauroyl, coLAGene, polyethylene, lecithin and ester oils. The most preferred pigments are the pigments treated with J ic n (polisi loxane). The powder compositions herein may also comprise one or more filler materials. Examples of suitable fillers include talc, rice starch and / or oxy bismuth chloride, preferably talc. It may also be desirable to include a dry binder in the powder compositions of the invention. Examples of dry binders include magnesium stearate, me stearate, calcium stearate, lithium stearate and mixtures thereof. An anti-acne active is also preferably included in the compositions of the present invention. Anti-acne active agents suitable for use in the present include salicylic acid, retinoic acid, acelaic acid, lytic acid, glycolic acid, pyruvic acid, flavonoids and derivatives and mixtures thereof. The anti-acne asset used in The present is preferably salicylic acid. The active antiacne is present at a level of from about 0.01% to about 30% by weight of the composition. Another highly preferred component in the compositions herein is an antibacterial agent. The antibacterial agent to be used herein is zinc oxide. Especially preferred is ultrafine zinc oxide having an average particle size of about 0.L microns to about 5 microns, with 0.5 to about 1.5 microns being preferred. It is found that the compositions herein based on a mixture of zinc oxide with ilicon and / or branched-chain hydrocarbon are essentially effective against bacteria of the P. acnes variety and therefore have excellent activity. The powder compositions of the present invention may also comprise a copolune or acrylic or hydrophobic crosslinked acrylate or particulate. The copolyrner is particularly valuable in reducing bridging and oil control. The crosslinked polymeric polymer is preferably in the form of a fingernail copolymer network and may contain at least one active ingredient dispersed uniformly throughout the copolymer lattice and within it. Alternatively, the hydrophobic polymer can take the form of a porous particle having a surface area (M2-BET) on the scale of about 50 to 500, preferably 100 to 300m2 / g and having an "" "ngredient. The active ingredient absorbed therein is the interlaced hydrophobic polymer when used herein in an amount of from about 0.1% to about 10% by weight.The active ingredient can be one or more of a mixture of cornpat oils! It is with the skin, humectants compatible with the skin, emollients, wetting agents, anti-acne actives and sunscreen.The polymer material is in the form of a powder, the powder being a combined system of particles.The system of dust particles forms a grid that includes unitary particles smaller than about 1 miera of average diameter, agglomerates of fused unitary particles denned on the scale of about 20 to 100 daughters of average diameter and aggregates : groupings of merged agglomerates of sizes on the scale of about 200 to 1200 microns of average diameter. The powdered material of the present invention that can be used as the carrier for the active ingredient can be broadly described as a crosslinked pore, "drofobica" post-absorbed ", interlaced, powder. preferably at and scattered therein an active which may be in the form of a solid, liquid or gas. The reticuLa is in the form of particles and constitutes discrete solid particles of free flow when loaded with the active material. The grid can contain a predetermined amount of active material. The polymer has the structural formula: tn where the ratio of xay is 80:20, R 'is CH2CH2- and R "is (CH2) llOH 3. The hydrothiobic polymer is a highly entangled polymer, most notably a poly-reactant, highly ironic copolymer. r-elazado, the material is manufactured by Dow Corning Corporation, Midland, Michigan, USA, and sold under the trade name POLYTRAP (RTM). It is an ultral white powder free flowing and the particles can absorb- high It contains lipophilic liquids and some hydrophobic liquids while at the same time maintaining the character of free-flowing powder. The powder structure consists of a grid of unitary minor particles that merge into an agglomerate of 20 to 100 microns and the agglomerates are grouped into loose or acropartic aggregates of about 200 approximately. 1200 microns The polymer powder can contain as many as four times its weight of fluids, '' -inlions, dispersions or molten solids. The adsorption of active ingredients on the polymer powder can be achieved using a mixing bowl made of stainless steel and a spoon, where the active is added to the powder and the spoon is used to gently stir the reagent into the powder. Low viscosity fluids can be adsorbed by adding fluids to a sealable container containing the polymer and then returning the materials to a consistency. It is also possible to use more elaborate mixing equipment such as batten or double cone mixers.

L3 Also suitable as a permanent copier of closely interlaced etacp lato is My croesponges (Mi crosponges bß / ii.

This adopts the form of particulates which are spherical of interwoven hydrophobic polymer having a pore size of about 0.01 to approximately 0.05 microns and a surface area of 200 to 300 rn2 / g. Again, -, e. You can twill with an active ingredient such as the one described above. However, to be used here, refer to My sponges (My crosponges 5640) downloaded. Other optional ingredients that may be included in the composition of the invention include consorbated amounts in generally lesser amounts-about 1% by weight.

Suitable preservatives include etiiparaben, propy Jparaben, nidazolidnilurea, phenoxyethanol, and mixtures thereof.

The compositions may also contain fragrances, sunscreens and agents that are attached. Other optional ingredients that can be included in the compositions herein are sunscreens, vitamins and wetting agents. In addition, bromide 20 < 1e ciet irnonio as an ant i bacteri no. The powder makeup compositions of the present invention may be in the form of loose powder or pressed. The compositions may also be in the form of eye shadows and blushes. go-, J EXAMPLES 1-V t /% U /% I TI /% IV /% V /% ft - 0 (1 0.00 3.00 12..0 2..00 Cosmetic mica 0.00 10.0 0.00 0.00 5.00 Zinc oxide 4.00 8.00 6.00 3.00 5"00 Po iet full B-12 7.00 2.00 10.0 1.00 5.00 Flask or zinc 0.00 6.50 0.00 5.00 3.00 aoli na 3.00 2.00 4.00 2.50 4.50 Polytrap 6603 3.00 1.00 4.00 1.50 2.00 Met 11? Ar-abenoid.

Pro? Lpa * abeno 0.10 0.10 0.10 0.10 0.10 Disodium EDTA 0.05 0.05 0.00 0.00 0.05 Salicylic acid 2.00 2.00 L.50 1.00 1.00 Red iron oxide 0.60 0.50 0.70 0.90 0.50 Yellow iron oxide 0.70 0.40 0.80 0.90 0.50 ^ xi do of black iron 0.20 0.20 0.30 0.30 0.20 Perrnethyl 102A 4.00 2.00 3.50 1.00 2. rO DC 2502 2.50 4.00 3.00 4.50 4.00 Talco --a 100-- The powder cosmetic compositions of the previous examples provide improved skin adhesion, wear, coverage and reduced rub characteristics. The above compositions can be prepared in the following manner. The dry ingredients are weighted on a ribbon mixer and mixed for approximately 15 minutes until they become homogeneous. The dry mixture is then sprayed through a pointed dot screen. The liquid ingredients are then sprayed into the dry mix with stirring. The load is pulverized and sifted before it is ready to be packed.

Claims (7)

NOVELTY OF THE INVENTION CLAIMS

1. - A cosmetic composition in the form of a powder comprising: (a) from about 0.1% to about 20% by weight of branched chain hydrocarbon having a weight average molecular weight of about 100 to 100% by weight 15,000 microns, and (b) the remainder of the composition comprising one or more cosmetic powder base components selected from pigments, opaque finishing agents, fillers and binders and mixtures thereof.

2. A cosmetic composition according to claim 1, further characterized in that the branched chain aliphatic hydrocarbon has an average molecular weight <1. And from about 200 to about 1000.

3. A cosmetic composition according to claim 1 or 2, further characterized in that the branched-chain aliphatic hydrocarbon is selected from isododecane, ihexadecane, isoeicosan, isooct hexacontane, isohexapentacontahectane and isopentacontaoctactane and mixtures thereof.

4. A cosmetic composition in accordance with Claims L to 3, furthermore being made up by the fact that the branched-chain aliphatic hydrocarbon is isoeicosan.

5. A cosmetic composition according to any of claims 1 to 4, further characterized in that it comprises from about 0.5% to about 10% by weight of branched chain aliphatic hydrocarbon.

6. A cosmetic composition according to any of claims 1 to 5, further characterized in that it comprises from about 0.1% to about 15%, preferably from about- 1% to about 10% by weight of polyethylene in particles.

7. A cosmetic composition according to any of the rei indications 1 to 6, characterized furthermore because it also comprises an ani-acne asset. B. A cosmetic composition according to claim 7, further characterized in that the ani-acne active is selected from salicylic acid, reic acid, noic acid, < zelá? co, lactic acid, glycolic acid, pyruvic acid, flavonoids and derivatives and ezcLas thereof ,. 9. A cosmetic composition according to the invention, characterized in addition to the fact that the anti-acne active is a coarse salt acid. 10. A cosmetic composition according to any of claims 1 to 9, further characterized in that it comprises from about 0.1% to about 10% by weight hydrophobic acrylic or methacrylate copolymer. 11. A Cosmetic Composition of Compliance Claim 10, further characterized in that the interlocked foraminous copolymer is in the form of a lattice and in that at least one active ingredient is uniformly dispersed throughout the lattice of the dope copolymer and trapped within it, the active ingredient being selected from oils compatible with the skin, humectants compatible with the skin, wetting agents, anti-acne actives and sun filters. 12. A cosmetic composition according to any of claims 1 to 11, further characterized in that it comprises from 0.01% to about 10% by weight of zinc oxide. 13. A cosmetic composition according to any of claims 1 to 12, further characterized in that the zinc oxide has an average particle size of about 0.1 micron to approximately 5 microns, preferably about 10 microns. 0.5 microns to approximately .5 m eras. 14. A cosmetic composition according to < One of claims 1 to 13, further characterized in that the composition is in the form of a loose or pressed powder having an average particle size prior to compression from about the daughter-in-law to about 100 microns, preferably about 5 microns. microwaves at approximately 60 micras