WO1995031978A1 - Anti-acne compositions - Google Patents
Anti-acne compositions Download PDFInfo
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- WO1995031978A1 WO1995031978A1 PCT/US1995/004734 US9504734W WO9531978A1 WO 1995031978 A1 WO1995031978 A1 WO 1995031978A1 US 9504734 W US9504734 W US 9504734W WO 9531978 A1 WO9531978 A1 WO 9531978A1
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- Prior art keywords
- benzoyl peroxide
- composition according
- group
- mixtures
- acne
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/327—Peroxy compounds, e.g. hydroperoxides, peroxides, peroxyacids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/042—Gels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/38—Percompounds, e.g. peracids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/89—Polysiloxanes
- A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61K8/894—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/10—Anti-acne agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
Definitions
- the present invention relates to topical anti-acne compositions containing benzoyl peroxide. These compositions are effective for the treatment of acne and also have low skin irritation and good chemical and physical stability. In further embodiments, the present invention also relates to methods for the treatment of acne.
- Acne is a common inflammatory pilosebaceous disease characterized by comedones, papules, pustules, inflamed nodules, and pus-filled cysts.
- the pathogenesis of acne is complex and is believed to involve an interaction between hormones, keratinization, sebum, and bacteria.
- Acne usually begins at puberty when the increase of androgens causes an increase in the size and activity of the sebum producing ducts. These ducts can subsequently become blocked, leading to hyperkeratinization and the formation of acne lesions.
- Many topical therapeutic agents are employed in the treatment of acne.
- compositions containing benzoyl peroxide are known to be effective for the treatment of acne.
- U.S. Patent No. 3,535,422 to Cox et al., issued October 20, 1970 discloses compositions containing dispersed benzoyl peroxide in a fluid medium containing water and an organic emollient;
- U.S. Patent No. 3,535,422 to Cox et al., issued October 20, 1970 discloses compositions containing dispersed benzoyl peroxide in a fluid medium containing water and an organic emollient;
- benzoyl peroxide has the disadvantage of being very irritating to the skin, causing symptoms such as excessive drying, scaling, swelling, burning, peeling, redness, allergic contact dermatitis, and sensitization.
- This irritation problem associated with benzoyl peroxide can cause a patient to discontinue or to reduce its usage, thereby sacrificing the anti-acne benefit. See, e.g., Brogden et al., Drugs 8, 417 (1974); Poole et al., Arch- Derm. 102, 400 (1972); Eaglstein, Arch. Derm.. 97,527 (1968); Pace, Can. Med. Ass. J..
- compositions of the present invention have good anti-acne efficacy, have low skin irritancy, and are physically and chemically stable.
- These compositions comprise a dispersion of benzoyl peroxide in a thickened vehicle containing water and a nonvolatile liquid emollient component wherein the weighted arithmetic mean solubility parameter of the constituents of the emollient is less than or equal to about 7.
- the present invention relates to an anti-acne composition
- an anti-acne composition comprising:
- compositions of the present invention are useful for treating acne 95 in human skin, i.e. for providing an anti-acne benefit.
- compositions of the present invention do not exhibit an appreciable breakdown, degradation, disappearance, reaction, or consumption of the benzoyl peroxide.
- compositions of the present invention loo typically retain at least about 80% of the initially added benzoyl peroxide over a period of about 3 months at 45°C.
- compositions of the present invention exhibit physical characteristics such as pH stability, resistance to loss of viscosity, resistance to discoloration, 105 resistance to developing off-odors, and the like.
- physical stability means that the compositions of the present invention exhibit physical characteristics such as pH stability, resistance to loss of viscosity, resistance to discoloration, 105 resistance to developing off-odors, and the like.
- the compositions of the present invention typically maintain their physical stability for at least about 3 months at 45°C.
- compositions or components thereof so described are suitable for use in contact with human tissue without undue toxicity, incompatibility, instability, allergic response, and the like.
- compositions of the present invention comprise from about 0.1% 120 to about 20%, more preferably from about 0.5% to about 15%, and most preferably from about 2.5% to about 10% of benzoyl peroxide.
- Benzoyl peroxide which is also known as dibenzoyl peroxide, can be represented by the chemical formula C14H10O4 and the following chemical structure.
- the benzoyl peroxide no particles are not limited to any particular size and can span a broad range of particle sizes. However, it is found that benzoyl peroxide particles having an average particle size diameter from about 0.5 microns to about 40 microns are preferred. More preferred are those having an average particle size diameter from about 1 micron to about 20 microns. Most preferred are 135 those having an average particle size diameter from about 1 micron to about
- compositions of the present invention comprise from about 0.01% to about 10%, more preferably from about 0.01% to about 5%, and most HO preferably from about 0.01% to about 1% of a wetting agent.
- the wetting agent can be a single chemical compound as well as mixtures of two or more chemical compounds. Without being limited by theory it is believed that the wetting agent coats the surface of the benzoyl peroxide particles and lowers their surface
- a preferred wetting agent is a dimethicone copolyol, which is a polymer of dimethylsiloxane with polyoxyethylene and/or polyoxypropylene
- a typical dimethicone copolyol is represented by the chemical formula (CH3)3SiO[(CH 3 )2SiO] x [(CH 3 )RSiO]ySi(CH3)3 wherein R is C3H5O(C2H O) m (C3H6O) n H, x is an integer from about 1 to about 500, y is an integer from about 1 to about 500, m is an integer from about 1 to about 250, and n is an integer from about 1 to about 250, (these integer
- dimethicone copolyols useful herein are sold by Dow Corning Corporation as Dow Corning® 190, 193, Q2-5220, 2501 Wax, 2-5324 fluid, and 3225C (this later material being sold as a mixture with cyclomethicone). Preferred
- Dow Corning® 190 and 193 silicone copolyol materials are the Dow Corning® 190 and 193 silicone copolyol materials. See DiSapio et al., "Silicone Glycols For Cosmetic And Toiletry Application", IFSCC, September 1988, London; Dow Corning Technical Bulletin, Shaping Solutions For Personal Care", 1993; U.S. Patent No. 4,122,029, to Gee et al., issued October 24, 1978, U.S. Patent no No. 4,265,878, to Keil, issued May 5, 1981; and U.S. Patent No. 4,421,769, to Dixon et al., issued December 20, 1983, all of which are incorporated by reference herein in their entirety.
- Nonlimiting examples of other wetting agents include the following materials dioctyl sodium sulfosuccinate, sodium lauraminodipropionate,
- caprylyl pyrollidone dimethyl octynediol, tetramethyl decynediol, and mxitures thereof.
- Preferred among these other wetting agents is dioctyl sodium sulfosuccinate, which is described in the CTFA Cosmetic Ingredient Handbook Second Edition 1992, p. 127, which is incorporated by reference herein in its entirety.
- useful as wetting agents in the present invention are various fluorinated and perfluorined materials such as the Fluorad tm fluorochemical surfactants described in The 3M Company's Product Information Bulletin Entitled Flourad Fluorochemical Surfactants. March 1993, which is incorporated by reference herein in its entirety.
- compositions of the present invention comprise from about 20% to about 99.74%, more preferably from about 50% to about 95%, and most
- Non-volatile Emollient Component 190 preferably from about 70% to about 90% of water.
- compositions of the present invention comprise from about 0.1 % to about 10%, more preferably from about 0.5% to about 7.5%, and most preferably from about 1 % to about 5% of a non-volatile emollient component
- emollient component is meant that the material is soothing to the skin or mucous membranes and is effective in making the skin feel soft, smooth, or supple.
- liquid at about 25°C is meant that the emollient component has a
- nonvolatile is meant that the emollient component has a boiling point, at 1 atmosphere pressure, greater than or equal to about 100°C.
- the emollient components useful herein can include a single chemical compound as well as mixtures of two or more chemical compounds as long
- the emollients useful herein preferably have a weighted arithmetic mean solubility parameter of less than or equal to about 7, preferably from about 1 to about 6.5, more preferably from about 5 to about 6.5, and most
- Solubility parameters are well known to the formulation chemist of ordinary skill in the art and are routinely used as a guide for determining compatibilities and solubilities of materials in the formulation process. Without being limited by theory, it is believed that by choosing a nonvolatile, liquid emollient component having a low solubility
- the solubility parameter of a chemical compound, ⁇ is defined as the square root of the cohesive energy density for that compound.
- a solubility parameter for a compound is calculated from tabulated values of the additive group contributions for the heat of vaporization and molar
- Solubility parameters obey the law of mixtures such that the solubility parameter for a mixture of materials is given by the weighted arithmetic mean (i.e. the weighted average) of the solubility parameters for each
- Formulation chemists typically report and use solubility parameters in units of (cal/cm3)1/2.
- the tabulated values of additive group contributions 250 for heat of vaporization in the Handbook of Solubility Parameters are reported in units of kJ/mol.
- these tabulated heat of vaporization values are readily converted to cal/mol using the following well-known relationships:
- Solubility parameters have also been tabulated for a wide variety of chemical materials. Tabulations of solubility parameters are found in the above-cited Handbook of Solubility Parameters. 60 A wide variety of nonvolatile emollients are useful herein, nonlimiting examples of which are listed in McCutcheon's. Vol. 2 Functional Materials.
- nonvolatile emollient materials especially preferred are silicones, hydrocarbons, esters, and mixtures thereof.
- silicone emollients include polyalkylsiloxanes, cyclic 70 polyalkylsiloxanes, and polyalkylarylsiloxanes.
- the polyalkylsiloxanes useful herein include, for example, polyalkylsiloxanes with viscosities of from about 0.5 to about 100,000 centistokes at 25°C. Such polyalkylsiloxanes correspond to the general chemical formula
- R3SiO[R2SiO] x SiR3 wherein R is an alkyl group (preferably R is methyl or 75 ethyl, more preferably methyl) and x is an integer from 0 to about 500, chosen to achieve the desired molecular weight.
- polyalkylsiloxanes include the polydimethylsiloxanes, which are also known as dimethicones, nonlimiting examples of which include the Vicasil® series sold by General Electric Company and the Dow Corning® 200 series sold 80 by Dow Corning Corporation.
- polydimethylsiloxanes useful as emollients herein include Dow Corning® 200 fluid having a viscosity of 0.65 centistokes and a boiling point of 100°C, Dow Corning® 225 fluid having a viscosity of 10 centistokes and a boiling point greater than 200°C, and Dow Corning® 200 fluids having viscosities of 50, 350, and 12,500 centistokes, respectively, and boiling points greater than 200°C.
- Cyclic polyalkylsiloxanes useful herein include those corresponding to the general chemical formula [SiR2-0] n wherein R is an alkyl group (preferably R is methyl or ethyl, more preferably methyl) and n is an integer from about 3 to about 8, more preferably n is an integer from about 3 to about 7, and most preferably n is an integer from about 4 to about 6.
- R is an alkyl group
- n is an integer from about 3 to about 8
- preferably n is an integer from about 3 to about 7
- most preferably n is an integer from about 4 to about 6.
- R is methyl
- these materials are typically referred to as cyclomethicones.
- Commercially available cyclomethicones include Dow Corning® 244 fluid having a viscosity of 2.5 centistokes, and a boiling point of 172°C, which primarily contains the cyclomethicone tetramer (i.e.
- Dow Corning® 245 fluid having a viscosity of 4.2 centistokes and a boiling point of 205°C, which primarily contains a mixture of the cyclomethicone tetramer and pentamer (i.e.
- n 4 and 5
- materials such as trimethylsiloxysilicate, which is a polymeric material corresponding to the general chemical formula [(CH2)3SiO ⁇ /2] ⁇ [Si ⁇ 2]y, wherein x is an integer from about 1 to about 500 and y is an integer from about 1 to about 500.
- a commercially available trimethylsiloxysilicate is sold as a mixture with dimethicone as Dow Corning ® 593 fluid.
- dimethiconols which are hydroxy terminated dimethyl silicones. These materials can be represented by the general chemical formulas R3SiO[R2SiO] x SiR2 ⁇ H and HOR2SiO[R2SiO] x SiR2 ⁇ H wherein R is an alkyl group (preferably R is methyl or ethyl, more preferably methyl) and x is an integer from 0 to about 500, chosen to achieve the desired molecular weight.
- dimethiconols are typically sold as mixtures with dimethicone or cyclomethicone (e.g. Dow Corning® 1401, 1402, and 1403 fluids).
- polyalkylaryl siloxanes with polymethylphenyl siloxanes having viscosities from about 15 to about 65 centistokes at 25°C being preferred. These materials are available, for example, as SF 1075 methylphenyl fluid (sold by General Electric Company) and 556 Cosmetic Grade phenyl trimethicone fluid (sold by Dow Corning Corporation).
- Hydrocarbons useful herein include straight and branched chain hydrocarbons having from about 10 to about 30 carbon atoms, more preferably from about 12 to about 24 carbon atoms, and most preferably from about 16 to about 22 carbon atoms.
- Nonlimiting examples of these hydrocarbon materials include dodecane, squalane, cholesterol,
- hydrocarbon materials useful herein include paraffins and mineral oils such as USP light mineral oil (e.g., Klearol® available from Witco Corp., Melrose Park, IL) and
- esters including esters of monofunctional and difunctional fatty acids that have been esterified with alcohols and polyols (i.e. alcohols having two or more hydroxy groups).
- esters are useful herein, with long chain esters of long chain fatty acids being preferred (i.e. C10-40 fatty acids esterified with C10-40 fatty alcohols).
- esters useful herein include those selected from the group consisting of diisopropyl adipate, isopropyl myristate, isopropyl palmitate, myristyl propionate, ethylene glycol
- compositions of the present invention comprise from about 0.05%
- water soluble or dispersible as used herein means that the gelling agents are soluble or dispersible in water at a level of at least about 0.25% by weight at 25°C.
- the gelling agent can be a single chemical
- Nonlimiting classes of water soluble or dispersible gelling agents include those selected from the group consisting of carboxylic acid polymers, crosslinked polyacrylate polymers, polyacrylamide polymers, polysaccharides, gums, vinyl ether/maleic anhydride copolymers, 355 crosslinked poly(N-vinylpyrrolidones), and mixtures thereof. See U.S. Patent No., 4,387,107, to Klein et al., issued June 7, 1983 which lists a variety of thickening or gelling agents, and which is incorporated herein by reference in its entirety.
- the preferred carboxylic acid polymers are of two general types. The first
- 365 type of polymer is a crosslinked homopolymer of an acrylic acid monomer or derivative thereof (e.g., wherein the acrylic acid has substituents on the two and three carbon positions independently selected from the group consisting of C ⁇ alkyl, -CN, -COOH, and mixtures thereof).
- 1-4 type of polymer is a crosslinked copolymer having a first monomer selected
- the monomers are preferably selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, and mixtures thereof, with acrylic acid being most preferred.
- acrylic acid is a group consisting of acrylic acid, methacrylic acid, ethacrylic acid, and mixtures thereof, with acrylic acid being most preferred.
- 385 monomer or derivative thereof is preferably selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, and mixtures thereof, with acrylic acid, methacrylic acid, and mixtures thereof being most preferred.
- the short chain alcohol acrylate ester monomer or derivative thereof is preferably selected from the group consisting of C alcohol
- the long chain alcohol acrylate ester monomer is selected from C alkyl acrylate esters, with C alkyl acrylate esters being preferred.
- crosslinking agent in both of these types of polymers is a polyalkenyl polyether of a polyhydric alcohol containing more than one alkenyl ether group per molecule, wherein the parent polyhydric alcohol contains at least 3 carbon atoms and at least 3 hydroxyl groups.
- Preferred crosslinkers are those selected from the group consisting of allyl ethers of
- Examples of commercially availble hompolymers of the first type useful herein include the carbomers, which are homopolymers of acrylic
- crosslinked Polyacrylate Polymers useful as thickeners include both cationic and nonionic polymers, with the cationics being generally preferred. Examples of useful crosslinked
- nonionic polyacrylate polymers and crosslinked cationic polyacrylate polymers are those described in U.S. Patent 5,100,660, to Hawe et al., issued March 31 , 1992; U.S. Patent 4,849,484, to Heard, issued July 18, 1989; U.S. Patent 4,835,206, to Farrar et al., issued May 30, 1989; U.S. Patent 4,628,078 to Glover et al. issued December 9, 1986; U.S. Patent 5,100,660, to Hawe et al., issued March 31 , 1992; U.S. Patent 4,849,484, to Heard, issued July 18, 1989; U.S. Patent 4,835,206, to Farrar et al., issued May 30, 1989; U.S. Patent 4,628,078 to Glover et al. issued December 9, 1986; U.S. Patent
- crosslinked polyacrylate polymers are high molecular weight materials that can be characterized by the general formula: (A) (B) (C)
- (A) is a dialkylaminoalkyl acrylate monomer or its quaternary ammonium or acid addition salt
- (B) is a dialkylaminoalkyl methacrylate monomer or its quaternary ammonium or acid addition salt
- (C) is a monomer that is polymerizable with (A) or (B), for example a monomer having a carbon-
- I is an integer of 0 or greater
- m is an integer of 0 or greater
- n is an integer of 0 or greater, but where either I or m, or both, must be 1 or greater.
- the (C) monomer can be selected from any of the commonly used monomers.
- Nonlimiting examples of these monomers include ethylene,
- (C) is preferably acrylamide.
- the alkyl portions of the (A) and (B) monomers are short chain length alkyls such as C -C , preferably C -C , more preferably
- the polymers are 1 3 1 2 preferably quatemized with short chain alkyls, i.e., C -C , preferably C -
- Thhe acid additio 1 n salts refer to polymers naving protonated amino groups. Acid addition salts can be performed through the use of halogen (e.g. chloride), acetic,
- (A) (B) (C) polymers also comprise a crosslinking agent, which is most typically a material containing two or more unsaturated functional groups.
- the crosslinking agent is reacted with the monomer units of the polymer and is incorporated into the polymer thereby forming links or
- suitable crosslinking agents include those selected from the group consisting of methylenebisacrylamides, diallyldialkyl ammonium halides, polyalkenyl polyethers of polyhydric alcohols, allyl acrylates,
- crosslinking agents useful herein include those selected from the group consisting of methylenebisacrylamide, ethylene glycol di-(meth)acrylate, di- (meth)acrylamide, cyanomethylacrylate, vinyloxyethylacrylate, vinyloxyethylmethacrylate, allyl pentaerythritol, trimethylolpropane
- 480 when present, can comprise from about 1 ppm to about 1000 ppm, preferably from about 5 ppm to about 750 ppm, more preferably from about
- the intrinsic viscosity of the crosslinked polymer measured in one o molar sodium chloride solution at 25 C, is generally above .6, preferably from about 8 to about 14.
- the molecular weight (weight average) of the crosslinked polymers hereof is high, and is believed to typically be between about 1 million and about 30 million. The specific molecular weight is not
- a 1.0% solution of the polymer (on an actives basis) in deionized water will have a viscosity at 25 C of at least about 20,000 cP, preferably at least about
- cationic polymers can be made by polymerization of an aqueous solution containing from about 20% to about 60%, generally from about 25% to about 40%, by weight monomer, in the presence of an initiator
- the crosslinking agent can also be added to the solution of the monomers to be polymerized, to incorporate it into the polymer.
- the temperature generally starts between about 0 and 95 C.
- the polymerization can be conducted by forming a reverse phase
- aqueous phase of the monomers and also any additional crosslinking agents
- a nonaqueous liquid e.g. mineral oil, lanolin, isododecane, oleyl alcohol, and other volatile and nonvolatile esters, ethers, and alcohols, and the like.
- the molar proportion of (C) monomer based on the total molar amount of (A), (B), and (C), can be from 0% to about 99%.
- the molar proportions of (A) and (B) can each be from 0% to 100%.
- acrylamide is used as the (C) monomer, it will preferably be used at a level
- (A) to monomer (B) in the final polymer, on a molar basis is preferably from about 99:5 to about 15:85, more preferably from about 80:20 to about 20:80.
- the ratio is from about 5:95 to about 50:50, preferably from about 5:95 to about 25:75.
- the ratio (A):(B) is from about
- ratio (A):(B) is about 60:40 to about
- monomer (A) is not present and the ratio of monomer (B):monomer (C) is from about 30:70 to about 70:30, preferably from about 40:60 to about 60:40 and most preferably from about 45:55 to about 55:45.
- Cationic polymers that are useful herein that are especially preferred 530 are those conforming to the general structure (A) (B) (C) wherein I is zero,
- (B) is methyl quaternized dimethylaminoethyl metnacrylate, the ratio of (B):(C) is from about 45:55 to about 55:45, and the crosslinking agent is methylenebisacrylamide.
- a cationic polymer is one that is commercially available as a mineral oil dispersion (which can also include
- Salcare® SC92 from Allied Colloids Ltd. (Norfolk, Virginia). This polymer has the proposed CTFA designation, "Polyquaternium 32 (and) Mineral Oil”.
- cationic polymers useful herein are those not containing acrylamide or other (C) monomers, that is, n is zero.
- the 540 (A) and (B) monomer components are as described above.
- An especially preferred group of these non-acrylamide containing polymers is one in which I is also zero.
- the polymer is essentially a homopolymer of a dialkylaminoalkyl methacrlyate monomer or its quaternary ammonium or acid addition salt.
- polymers preferably contain a crosslinking agent as described above.
- a cationic polymer which is essentially a homopolymer, useful herein is one conforming to the general structure (A) (B) (C) wherein I is zero, (B) is methyl quaternized dimethylaminoethyl methacrylate, n is zero, and the crosslinking agent is methylenebisacrylamide.
- I is zero
- B is methyl quaternized dimethylaminoethyl methacrylate
- n is zero
- the crosslinking agent is methylenebisacrylamide.
- polyacrylamide polymers especially non-ionic polyacrylamide polymers including substituted branched or unbranched polymers. These polymers can be formed from a variety of monomers including acrylamide and methacrylamide which are
- acrylate amide and methacrylate amide monomers in which the amide nitrogen is unsubstituted, or substituted with one or two C-
- N,N-dimethylmethacrylamide N-isopropylacrylamide, N- isopropylmethacrylamide, and N,N-dimethylacrylamide.
- These polymers have a molecular weight greater than about 1,000,000 preferably greater than about 1,5000,000 and range up to about 30,000,000. Most preferred among these polyacrylamide polymers is the non-ionic polymer given the
- polyacrylamide polymers useful herein include multi-block copolymers of acrylamides and substituted acrylamides with acrylic acids and substituted acrylic acids. Commercially available examples of these
- polysaccharides include Hypan SR150H, SS500V, SS500W, SSSA100H, from Lipo Chemicals, Inc., (Patterson, NJ).
- Polysaccharides A wide variety of polysaccharides are useful herein. By “polysaccharides” are meant gelling agents containing a backbone of repeating sugar (i.e. carbohydrate) units.
- polysaccharide gelling agents include those selected from the group consisting of cellulose, carboxymethyl hydroxyethylcellulose, cellulose acetate propionate carboxylate, hydroxyethylcellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, methyl hydroxyethylcellulose, microcrystalline cellulose, sodium cellulose
- the alkyl substituted celluloses are also useful herein.
- the hydroxy groups of the cellulose polymer is hydroyxalkylated (preferably hydroxyethylated or hydroxypropylated) to form a hydroxyalkylated cellulose which is then further modified with a C10- C30 straight chain or branched chain alkyl group through an ether linkage.
- these polymers are ethers of C10-C30 straight or branched chain alcohols with hydroxyalkylcelluloses.
- alkyl groups useful herein include those selected from the group consisting of stearyl, isostearyl, lauryl, myristyl, cetyl, isocetyl, cocoyl (i.e. alkyl groups derived from the alcohols of coconut oil), palmityl, oleyl, linoleyl, linolenyl, ricinoleyl,
- alkyl hydroxyalkyl cellulose ethers Preferred among the alkyl hydroxyalkyl cellulose ethers is the material given the CTFA designation cetyl hydroxyethylcellulose, which is the ether of cetyl alcohol and hydroxyethylcellulose. This material is sold under the tradename Natrosol® CS Plus from Aqualon Corporation. Other useful
- polysaccharides include scleroglucans comprising a linear chain of (1->3) linked glucose units with a (1->6) linked glucose every three units, a commercially available example of which is Clearogel tm CS11 from Michel Mercier Products Inc. (Mountainside, NJ). Gums Other gelling agents useful herein include materials which are
- Nonlimiting examples of these gelling agent gums include materials selected from the group consisting of acacia, agar, algin, alginic acid, ammonium alginate, amylopectin, bentonite, calcium alginate, calcium carrageenan, carnitine, carrageenan, corn starch, dextrin, gelatin, gellan gum, guar gum, guar
- crosslinked Vinyl Ether/Maleic Anhydride Copolymers Other gelling agents useful herein include crosslinked copolymers of alkyl vinyl ethers and
- Preferred crosslinking agents are C4-C20 dienes, preferably C6 to C16 dienes, and most preferably C8 to C12 dienes.
- a particularly preferred copolymer is one formed from methyl vinyl ether and maleic
- copolymer has been crosslinked with decadiene, and wherein the polymer when diluted as a 0.5% aqueous solution at pH 7 at 25 °C has a viscosity of 50,000-70,000 cps when measured using a Brookfield RTV viscometer, spindle #7 at 10 rpm.
- This copolymer has the CTFA designation PVM/MA decadiene crosspolymer and is commercially available
- Crosslinked polv(N-vinylpyrrolidones) Crosslinked polyvinyl(N- pyrrolidones) useful herein as gelling agents include those described in U.S. Patent No. 5,139,770, to Shih et al, issued August 18, 1992, and U.S. Patent No. 5,073,614, to Shih et al., issued December 17, 1991 , both
- gelling agents typically contain from about 0.25% to about 1% by weight of a crosslinking agent selected from the group consisting of divinyl ethers and diallyl ethers of terminal diols containing from about 2 to about 12 carbon atoms, divinyl ethers and diallyl ethers of polyethylene glycols
- these gelling agents have a viscosity from about 25,000 cps to about 40,000 cps when measured as a 5% aqueous solution at 25°C using a Brookfield RVT viscometer with Spindle
- compositions of the present invention can comprise a wide range
- CTFA Cosmetic Ingredient Handbook Second Edition, 1992, which is incorporated by reference herein in its entirety, describes a wide variety of nonlimiting cosmetic and pharamceutical ingredients commonly used in the skin care industry, which are suitable for use in the compositions of the present invention.
- Nonlimiting examples of functional classes of ingredients are described at page 537 of this reference.
- these functional classes include: abrasives, absorbents, other anti-acne agents, anticaking agents, antifoaming agents, antimicrobial agents, antioxidants, binders, biological additives, buffering agents, bulking agents, chelating agents, chemical
- additives colorants, cosmetic astringents, cosmetic biocides, denaturants, drug astringents, external analgesics, film formers, fragrance components, humectants, opacifying agents, pH adjusters, preservatives, propellants, reducing agents, skin bleaching agents, skin-conditioning agents (humectants, miscellaneous, and occulsive), sunscreen agents, and
- vitamins and derivatives thereof include the following: vitamins and derivatives thereof (e.g tocopherol, tocopherol acetate, retinoic acid, retinol, retinoids, and the like);
- polymers for aiding the film-forming properties and substantivity of the composition such as a copolymer of eicosene and vinyl pyrrolidone, an example of which is available from GAF Chemical Corporation as Ganex® V-220); preservatives for maintaining the antimicrobial integrity of the compositions; other anti-acne medicaments (e.g., resorcinol, sulfur, salicylic
- skin bleaching (or lightening) agents including but not limited to hydroquinone, kojic acid; antioxidants; chelators and sequestrants; and aesthetic components such as fragrances, pigments, colorings, essential oils, skin sensates, astringents, skin soothing agents, skin healing agents and the like, nonlimiting examples of these aesthetic
- panthenol and derivatives e.g. ethyl panthenol
- aloe vera pantothenic acid and its derivatives
- clove oil menthol
- camphor eucalyptus oil
- eugenol menthyl lactate
- witch hazel distillate allantoin, bisabolol, dipotassium glycyrrhizinate and the like
- skin conditioning agents such as the propoxylated glycerols described in U.S. Patent No.
- compositions of the present invention are useful for treating acne in human skin.
- an effective amount of the compositions of the present invention is provided.
- compositions of the present invention are applied to the skin.
- effective means an amount of the compositions of the present invention to provide an anti-acne benefit, but not so much as to cause any undesirable side effects or skin reactions.
- compositions of the present invention A wide range of quantities of the compositions of the present invention
- Quantities of the present compositions which are typically applied to provide an anti-acne benefit can range from about 0.1 mg/cm 2 to about 10 mg/cm 2 .
- a particularly useful amount to use is about 2 mg/cm 2 .
- Ingredients are identified by chemical or CTFA name.
- An anti-acne gel is prepared by combining the following ingredients 7io using conventional mixing techniques.
- Lucidol® 70 from Elf Atochem, which is a powder containing 70% benzoyl peroxide active. 14.29% percent of this powder is added to the composition to account for the 70% activity .
- Carbopol® 980 from B.F. Goodrich.
- a benzoyl peroxide slurry is prepared by combining the benzoyl peroxide with approximately 17% of the water. This slurry is passed through a Colloid or Urschel mill to disperse the benzoyl peroxide, followed by rinsing the mill with approximately an additional 6% of the water, this rinse being added to the total slurry.
- a 5% sodium hydroxide solution is prepared using approximately 2.5% of the water.
- the carbomer 980 is gradually combined with the remaining water with agitation to disperse and hydrate the carbomer.
- the carbomer dispersion is then transferred to a vessel equipped with a high shear mixer (Day Mixer, Serial No. 88612, Day Mixing, Cincinnati, OH) for blending the remaining ingredients.
- the disodium EDTA is added and mixed until dissolved.
- the dimethicone copolyol is then added and stirred until uniform.
- the benzoyl peroxide slurry is added and the mixture is stirred until uniform.
- the dimethicone is then added and the mixture stirred for 5 minutes to fully disperse the silicone.
- the 5% NaOH solution is gradually added with continuous mixing. The compositions is then mixed for 3-5 minutes until homogeneous.
- the resulting anti-acne composition exhibits low skin irritation and good physical and chemical stability, and is useful for topical application to human skin for the treatment of acne.
- An antiacne gel is prepared by combining the following ingredients using conventional mixing techniques.
- Dimethicone Copolyol 3 0.10 Dimethicone 4 1.0
- Lucidol® 70 from Elf Atochem, which is a powder containing 70% benzoyl peroxide active. 14.29% percent of this powder is added to the composition to account for the 70% activity.
- Carbopol® 980 from B.F. Goodrich.
- a benzoyl peroxide slurry is prepared by combining the benzoyl peroxide with 17% of the water. This slurry is passed through a Colloid or Urschel mill to disperse the benzoyl peroxide, followed by rinsing the mill with approximately an additional 6% of the water, this rinse being added to the total slurry.
- a 5% sodium hydroxide solution is prepared using 2.5% of the water.
- the carbomer 980 is gradually combined with the remaining water with agitation to disperse and hydrate the carbomer.
- the carbomer dispersion is then transferred to a vessel equipped with a high shear mixer (Day Mixer, Serial No. 88612, Day Mixing, Cincinnati, OH) for blending the remaining ingredients.
- the disodium EDTA is added and mixed until dissolved.
- the dimethicone copolyol is then added and stirred until uniform.
- the bentonite is added to the mixture which is stirred with sufficient agitation until dispersed.
- the benzoyl peroxide slurry is added and the mixture is stirred until uniform.
- the dimethicone is then added and the mixture stirred for 5 minutes to fully disperse the silicone.
- the 5% NaOH solution is gradually added with continuous mixing. The compositions is then mixed for 3-5 minutes until homogeneous.
- the resulting anti-acne composition exhibits low skin irritation and good physical and chemical stability, and is useful for topical application to human skin for the treatment of acne.
- EXAMPLE 3 Anti-Acne Gel An antiacne gel is prepared by combining the following ingredients using conventional mixing techniques.
- Lucidol® 70 from Elf Atochem, which is a powder containing 70% benzoyl peroxide active. 3.57% percent of this powder is added to the composition to account for the 70% activity. 815 2 Carbopol® 980 from B.F. Goodrich.
- a benzoyl peroxide slurry is prepared by 820 combining the benzoyl peroxide with 17% of the water. This slurry is passed through a Colloid or Urschel mill to disperse the benzoyl peroxide, followed by rinsing the mill with approximately an additional 6% of the water, this rinse being added to the total slurry.
- a 5% sodium hydroxide solution is prepared 825 using 2.5% of the water.
- the carbomer 980 is gradually combined with the remaining water with agitation to disperse and hydrate the carbomer.
- the carbomer dispersion is then transferred to a vessel equipped with a high shear mixer (Day Mixer, Serial No. 88612, Day Mixing, Cincinnati, OH) for 830 blending the remaining ingredients.
- the disodium EDTA is added and mixed until dissolved.
- the dimethicone copolyol is then added and stirred until uniform.
- the bentonite is added to the mixture which is stirred with sufficient agitation until dispersed.
- the benzoyl peroxide slurry is added and the mixture is stirred until uniform.
- the dimethicone is then 835 added and the mixture stirred for 5 minutes to fully disperse the silicone.
- compositions is then mixed for 3-5 minutes until homogeneous.
- the resulting anti-acne composition exhibits low skin irritation and good physical and chemical stability, and is useful for topical application to 840 human skin for the treatment of acne.
- An antiacne gel is prepared by combining the following ingredients 845 using conventional mixing techniques.
- Lucidol® 70 from Elf Atochem, which is a powder containing 70% benzoyl peroxide active. 14.29% percent of this powder is added to the composition
- a benzoyl peroxide slurry is prepared by 865 combining the benzoyl peroxide with 17% of the water. This slurry is passed through a Colloid or Urschel mill to disperse the benzoyl peroxide, followed by rinsing the mill with approximately an additional 6% of the water, this rinse being added to the total slurry.
- a 5% sodium hydroxide solution is prepared 870 using 2.5% of the water.
- the carbomer 980 is gradually combined with the remaining water with agitation to disperse and hydrate the carbomer.
- the carbomer dispersion is then transferred to a vessel equipped with a high shear mixer (Day Mixer, Serial No. 88612, Day Mixing, Cincinnati, OH) for
- the resulting anti-acne composition exhibits low skin irritation and good physical and chemical stability, and is useful for topical application to
- An antiacne gel is prepared by combining the following ingredients 890 using conventional mixing techniques.
- Lucidol® 70 from Elf Atochem, which is a powder containing 70% benzoyl peroxide active. 3.57% percent of this powder is added to the composition
- a benzoyl peroxide slurry is prepared by combining the benzoyl peroxide with 17% of the water. This slurry is passed through a Colloid or Urschel mill to disperse the benzoyl peroxide, followed by rinsing the mill with approximately an additional 6% of the water, this rinse being added to the total slurry.
- a 5% sodium hydroxide solution is prepared using 2.5% of the water.
- the carbomer 980 is gradually combined with the remaining water with agitation to disperse and hydrate the carbomer.
- the carbomer dispersion is then transferred to a vessel equipped with a high shear mixer (Day Mixer, Serial No. 88612, Day Mixing, Cincinnati, OH) for blending the remaining ingredients.
- a high shear mixer Day Mixer, Serial No. 88612, Day Mixing, Cincinnati, OH
- the disodium EDTA is added and mixed until dissolved.
- the dimethicone copolyol is then added and stirred until uniform.
- the bentonite is added to the mixture which is stirred with sufficient agitation until dispersed.
- the benzoyl peroxide slurry is added and the mixture is stirred until uniform.
- the cyclomethicone (and) dimethiconol is then added and the mixture stirred for 5 minutes to fully disperse the silicone.
- the 5% NaOH solution is gradually added with continuous mixing.
- the compositions is then mixed for 3-5 minutes until homogeneous.
- the resulting anti-acne composition exhibits low skin irritation and good physical and chemical stability, and is useful for topical application to human skin for the treatment of acne.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT95916442T ATE270546T1 (en) | 1994-05-19 | 1995-04-19 | ANTI-ACNE PREPARATIONS |
CA002190753A CA2190753C (en) | 1994-05-19 | 1995-04-19 | Anti-acne compositions |
EP95916442A EP0759749B1 (en) | 1994-05-19 | 1995-04-19 | Anti-acne compositions |
DE69533239T DE69533239T2 (en) | 1994-05-19 | 1995-04-19 | ANTI-AKNE PREPARATIONS |
MX9605714A MX9605714A (en) | 1995-04-19 | 1995-04-19 | Anti-acne compositions. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/245,777 US5470884A (en) | 1994-05-19 | 1994-05-19 | Anti-acne compositions |
US08/245,777 | 1994-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995031978A1 true WO1995031978A1 (en) | 1995-11-30 |
Family
ID=22928034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/004734 WO1995031978A1 (en) | 1994-05-19 | 1995-04-19 | Anti-acne compositions |
Country Status (8)
Country | Link |
---|---|
US (1) | US5470884A (en) |
EP (1) | EP0759749B1 (en) |
CN (1) | CN1079669C (en) |
AT (1) | ATE270546T1 (en) |
CA (1) | CA2190753C (en) |
DE (1) | DE69533239T2 (en) |
ES (1) | ES2224125T3 (en) |
WO (1) | WO1995031978A1 (en) |
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JP2005513146A (en) * | 2001-12-21 | 2005-05-12 | ガルデルマ・リサーチ・アンド・デヴェロップメント・エス・エヌ・セ | Gel composition comprising at least one retinoid and benzoyl peroxide |
JP2008534614A (en) * | 2005-03-30 | 2008-08-28 | ルバンス セラピュティックス インク. | Compositions and methods for treating acne |
US7820186B2 (en) | 2001-12-21 | 2010-10-26 | Galderma Research & Development | Gel composition for once-daily treatment of common acne comprising a combination of benzoyl peroxide and adapalene and/or adapalene salt |
US9561208B2 (en) | 2008-06-05 | 2017-02-07 | Dow Pharmaceutical Sciences, Inc. | Topical pharmaceutical formulations containing a low concentration of benzoyl peroxide in suspension in water and a water-miscible organic solvent |
US10925814B2 (en) | 2006-12-21 | 2021-02-23 | Galderma Research & Development | Cream gels comprising at least one retinoid and benzoyl peroxide |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0739619B1 (en) * | 1995-04-25 | 1998-01-14 | L'oreal | Foaming o/w emulsion based on non-ionic surfactants, a fatty phase and a cross-linked cationic or anionic polymer for topical use |
US9814690B2 (en) | 2001-12-21 | 2017-11-14 | Galderma Research & Development | Gel composition for treatment of common acne comprising a combination of benzoyl peroxide and adapalene and/or adapalene salt |
US8105618B2 (en) | 2001-12-21 | 2012-01-31 | Galderma Research & Development | Dermatological/cosmetic gels comprising at least one retinoid and/or retinoid salt and benzoyl peroxide |
US7820186B2 (en) | 2001-12-21 | 2010-10-26 | Galderma Research & Development | Gel composition for once-daily treatment of common acne comprising a combination of benzoyl peroxide and adapalene and/or adapalene salt |
US7964202B2 (en) | 2001-12-21 | 2011-06-21 | Galderma Research & Development, S.N.C. | Method for treatment of common acne |
US8936800B2 (en) | 2001-12-21 | 2015-01-20 | Galderma Research & Development | Gel composition for treatment of common acne comprising a combination of benzoyl peroxide and adapalene and/or adapalene salt |
US8241649B2 (en) | 2001-12-21 | 2012-08-14 | Galderma Research & Development | Dermatological/cosmetic gels comprising at least one retinoid and/or retinoid salt and benzoyl peroxide |
JP2005513146A (en) * | 2001-12-21 | 2005-05-12 | ガルデルマ・リサーチ・アンド・デヴェロップメント・エス・エヌ・セ | Gel composition comprising at least one retinoid and benzoyl peroxide |
JP2012184253A (en) * | 2005-03-30 | 2012-09-27 | Revance Therapeutics Inc | Composition and method for treatment of acne |
US8580317B2 (en) | 2005-03-30 | 2013-11-12 | Revance Therapeutics, Inc. | Compositions and methods for treating acne |
JP2008534614A (en) * | 2005-03-30 | 2008-08-28 | ルバンス セラピュティックス インク. | Compositions and methods for treating acne |
US10925814B2 (en) | 2006-12-21 | 2021-02-23 | Galderma Research & Development | Cream gels comprising at least one retinoid and benzoyl peroxide |
US9561208B2 (en) | 2008-06-05 | 2017-02-07 | Dow Pharmaceutical Sciences, Inc. | Topical pharmaceutical formulations containing a low concentration of benzoyl peroxide in suspension in water and a water-miscible organic solvent |
US9693988B2 (en) | 2008-06-05 | 2017-07-04 | Dow Pharmaceutical Sciences, Inc. | Topical pharmaceutical formulations containing a low concentration of benzoyl peroxide in suspension in water and a water-miscible organic solvent |
US10220049B2 (en) | 2008-06-05 | 2019-03-05 | Dow Pharmaceutical Sciences, Inc. | Topical pharmaceutical formulations containing a low concentration of benzoyl peroxide in suspension in water and a water-miscible organic solvent |
US10624918B2 (en) | 2008-06-05 | 2020-04-21 | Dow Pharmaceutical Sciences, Inc. | Topical pharmaceutical formulations containing a low concentration of benzoyl peroxide in suspension in water and a water-miscible organic solvent |
US11478498B2 (en) | 2008-06-05 | 2022-10-25 | Dow Pharmaceutical Sciences, Inc. | Topical pharmaceutical formulations containing a low concentration of benzoyl peroxide in suspension in water and a water-miscible organic solvent |
Also Published As
Publication number | Publication date |
---|---|
CA2190753C (en) | 2001-02-13 |
ATE270546T1 (en) | 2004-07-15 |
CN1148808A (en) | 1997-04-30 |
CN1079669C (en) | 2002-02-27 |
US5470884A (en) | 1995-11-28 |
CA2190753A1 (en) | 1995-11-30 |
EP0759749B1 (en) | 2004-07-07 |
DE69533239D1 (en) | 2004-08-12 |
DE69533239T2 (en) | 2005-08-18 |
ES2224125T3 (en) | 2005-03-01 |
EP0759749A1 (en) | 1997-03-05 |
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