# US 10,369,102 B2 · Wax foamable vehicle and pharmaceutical compositions thereof

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- Number: US 10,369,102 B2
- Document ID: US10369102B2
- Status: Granted
- Kind: B2
- Application number: 15/493,807
- Filed: 2017-04-21
- Published: 2018-01-04
- Granted: 2019-08-06
- Earliest claimed: 2008-08-07
- Assignees: Foamix Pharmaceuticals Ltd.
- Applicants: Foamix Pharmaceuticals Ltd.
- Inventors: Dov Tamarkin; Rita Keynan; David Schuz; Tal Berman
- Web page: https://patentgrep.com/patent/US10369102B2

## CPC

- A61K 9/124: {characterised by the propellant}
- A61K 8/046: {Aerosols; Foams}
- A61K 8/31: Hydrocarbons
- A61K 8/342: {Alcohols having more than seven atoms in an unbroken chain}
- A61K 8/361: {Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof}
- A61K 8/4993: {Derivatives containing from 2 to 10 oxyalkylene groups}
- A61K 8/86: Polyethers
- A61K 9/122: {Foams; Dry foams (edible foams A61K9/0056)}
- A61K 47/10: Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
- A61K 47/14: Esters of carboxylic acids, e.g. fatty acid monoglycerides, medium-chain triglycerides, parabens or PEG fatty acid esters
- A61K 47/26: Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
- A61K 47/32: Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers {, poly(meth)acrylates, or polyvinyl pyrrolidone}
- A61K 47/34: 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 (A61K47/10 takes precedence)
- A61K 47/36: Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
- A61K 47/38: Cellulose; Derivatives thereof
- A61K 47/44: Oils, fats or waxes according to two or more groups of A61K47/02-A61K47/42; Natural or modified natural oils, fats or waxes, e.g. castor oil, polyethoxylated castor oil, montan wax, lignite, shellac, rosin, beeswax or lanolin (synthetic glycerides, e.g. medium-chain triglycerides, A61K47/14)
- A61P 43/00: Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
- A61Q 5/006: {Antidandruff preparations}
- A61Q 7/00: Preparations for affecting hair growth
- A61Q 19/00: Preparations for care of the skin
- A61Q 19/02: for chemically bleaching or whitening the skin
- A61Q 19/08: Anti-ageing preparations
- A61K 9/0031: {Rectum, anus}
- A61K 9/0034: {Urogenital system, e.g. vagina, uterus, cervix, penis, scrotum, urethra, bladder; Personal lubricants}
- A61K 9/0043: {Nose}
- A61K 9/0046: {Ear}
- A61K 9/1075: {Microemulsions or submicron emulsions; Preconcentrates or solids thereof; Micelles, e.g. made of phospholipids or block copolymers (A61K9/0026 takes precedence)}
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

Unique foamable vehicles or carriers comprising at least one wax, waxy substance, counterpart or derivative, a stabilizer, water, and a propellant are provided. In some embodiments, the wax is a liquid wax. In some embodiments, the wax includes a solid wax and a liquid wax. The compositions are substantially free of crystals. The components are selected to provide a composition that is substantially resistant to aging and to phase separation, and/or can substantially solubilize and or stabilize active ingredients. Pharmaceutical and cosmetic compositions with potentially enhanced skin delivery and their uses are also provided.

## Claims

### Claim 1

A foamble composition comprising a carrier and a liquefied hydrocarbon gas propellant, wherein the carrier comprises:
a) a liquid wax comprising at least one fatty acid and/or at least one fatty alcohol;
b) a non-ionic surface active agent; and
c) water;
wherein the ratio of the carrier to the gas propellant is about 100:3 by weight to about 100:35 by weight;
wherein, upon release from a pressurized container, the foamable composition produces a breakable foam; wherein the carrier does not comprise a polymeric agent selected from the group consisting of a bioadhesive agent, a gelling agent, a film forming agent, and a phase change agent.

### Claim 2 (depends on 1)

The foamable composition of claim 1, wherein the fatty acid has 12-22 carbon atoms in its carbon backbone.

### Claim 3 (depends on 1)

The foamable composition of claim 1, wherein the fatty alcohol has 12-22 carbon atoms in its carbon backbone.

### Claim 4 (depends on 1)

The foamable composition of claim 1, wherein the fatty acid has 16-22 carbon atoms in its carbon backbone.

### Claim 5 (depends on 1)

The foamable composition of claim 1, wherein the fatty alcohol has 16-22 carbon atoms in its carbon backbone.

### Claim 6 (depends on 1)

The foamable composition of claim 1, wherein the fatty alcohol is a branched and/or unsaturated fatty alcohol.

### Claim 7 (depends on 1)

The foamable composition of claim 1, wherein the fatty acid is a branched and/or unsaturated fatty acid.

### Claim 8 (depends on 1)

The foamable composition of claim 1, wherein the liquid wax is present at a concentration of at least about 7.5% to about 60% by weight and comprises isostearic acid, myristoleic acid, palmitoleic acid, oleic acid, linoleic acid, alpha linolenic acid, arachidonic acid, eicosapentaenoic acid, erucic acid, docosahexaenoic acid, isostearyl alcohol, oleyl alcohol, lauric acid, octyldodecanol, jojoba oil, or a mixture of two or more thereof.

### Claim 9 (depends on 1)

The foamable composition of claim 1, wherein the carrier comprises a fatty acid and a fatty alcohol, and wherein the ratio of the amount by weight of the carrier of the fatty alcohol to that of the fatty acid is between about 10:9 and about 8:1.

### Claim 10 (depends on 1)

The foamable composition of claim 1, wherein the surface active agent is present at between about 0.2% and about 8% by weight of the carrier.

### Claim 11 (depends on 10)

The foamable composition of claim 10, wherein the surface active agent is selected from the group consisting of a polysorbate, polyoxyethylene (20) sorbitan monostearate, polyoxyethylene (20) sorbitan monooleate, a polyoxyethylene fatty acid ester, polyoxyethylene (8) stearate, polyoxyethylene (20) stearate, polyoxyethylene (40) stearate, polyoxyethylene (100) stearate, a polyoxyethylene alkyl ether, a polyoxyethylene cetyl ether, polyoxyethylene (23) cetyl ether, polyoxyethylene (2) cetyl ether, polyoxyethylene (10) cetyl ether, a sucrose ester, a partial ester of sorbitol, sorbitan monolaurate, a monoglyceride, a diglyceride, isoceteth-20, steareth 2, glyceryl stearate, steareth-21, sorbitan stearate, laureth 4, sorbitan monooleate, ceteareth 20, steareth 20, ceteth 20, macrogol cetostearyl ether, PEG-30 di polyhydroxystearate, sucrose distearate, cetomacrogol ether, cetearyl glucoside, polysorbate 20; methyl glucose sesquistearate, a sucrose stearic acid ester, a phospholipid, and a mixture of two or more thereof.

### Claim 12 (depends on 1)

The foamable composition of claim 1, further comprising a solvent selected from the group consisting of an organic carrier, a hydrophilic solvent, a hydrophobic solvent, a potent solvent, a polar solvent, a silicone, an emollient, and a mixture of two or more thereof.

### Claim 13 (depends on 12)

The foamable composition of claim 12, wherein the organic carrier is selected from the group consisting of mineral oil, triglyceride, medium chain triglyceride (MCT) oil, capric/caprylic triglyceride, alkyl esters of fatty acids isopropyl palmitate, isopropyl myristate, isopropyl isostearate, poly propylene glycol 15-stearly ether, octyl palmitate, cetyl lactate, cetyl ricinoleate, tocopheryl acetate, acetylated lanolin alcohol, cetyl acetate, phenyl trimethicone, glyceryl oleate, tocopheryl linoleate, wheat germ glycerides, arachidyl propionate, myristyl lactate, decyl oleate, ricinoleate, isopropyl lanolate, pentaerythrityl tetrastearate, neopentylglycol dicaprylate/dicaprate, isononyl isononanoate, isotridecyl isononanoate, myristyl myristate, triisocetyl citrate, octyl dodecanol, maleated soybean oil, unsaturated or polyunsaturated oils, olive oil, corn oil, soybean oil, canola oil, cottonseed oil, coconut oil, sesame oil, sunflower oil, borage seed oil, syzigium aromaticum oil, hempseed oil, herring oil, cod-liver oil, salmon oil, flaxseed oil, wheat germ oil, evening primrose oil, essential oil, silicone oil, dimethicone, cyclomethicone, polyalkyl siloxane, polyaryl siloxane, polyalkylaryl siloxane, a polyether siloxane copolymer, a poly(dimethylsiloxane)-(diphenyl-siloxane), and a mixture of two or more thereof.

### Claim 14 (depends on 12)

The foamable composition of claim 12, wherein the polar solvent is selected from the group consisting of dimethyl isosorbide, glycerol, propylene glycol, hexylene glycol, diethylene glycol, propylene glycol n-alkanols, terpenes, di-terpenes, tri-terpenes, limonene, terpene-ol, 1-menthol, dioxolane, ethylene glycol, oleyl alcohol, alpha-hydroxy acids, lactic acid, glycolic acid, sulfoxides, dimethylsulfoxide (DMSO), dimethylformanide, methyl dodecyl sulfoxide, dimethylacetamide, azone (1-dodecylazacycloheptan-2-one), 2-(n-nonyl)-1,3-dioxolane, alkanols, dialkylamino acetates, and a mixture of two or more thereof.

### Claim 15 (depends on 1)

The foamable composition of claim 1, further comprising a modulating agent, an anti-perspirant, an anti-static agent, a buffering agent, a bulking agent, a chelating agent, a colorant, a conditioner, a deodorant, a diluent, a dye, an emollient, fragrance, a humectant, an occlusive agent, a penetration enhancer, a perfuming agent, a permeation enhancer, a pH-adjusting agent, a preservative, a skin penetration enhancer, a sunscreen, a sun blocking agent, a sunless tanning agent, a vitamin, or a mixture of two or more thereof.

### Claim 16 (depends on 1)

The foamable composition of claim 1, further comprising an active agent.

### Claim 17 (depends on 16)

The foamable composition of claim 16, wherein the active agent is selected from the group consisting of an active herbal extract, an acaricide, an age spot and keratose removing agent, an allergen, an analgesic, a local anesthetic, an antiacne agent, an antiallergic agent, an antiaging agent, an antibacterial, an antibiotic, an antiburn agent, an anticancer agent, an antidandruff agent, an antidepressant, an antidermatitis agent, an antiedemic, an antihistamine, an antihelminth, an antihyperkeratolyte agent, an antiinflammatory agent, an antiirritant, an antilipemic, an antimicrobial, an antimycotic, an antiproliferative agent, an antioxidant, an anti-wrinkle agent, an antipruritic, an antipsoriatic agent, an antirosacea agent, an antiseborrheic agent, an antiseptic agent, an antiswelling agent, an antiviral agent, an antiyeast agent, an astringent, a topical cardiovascular agent, a chemotherapeutic agent, a corticosteroid, a dicarboxylic acid, a disinfectant, a fungicide, a hair growth regulator, a hormone, a hydroxy acid, an immunosuppressant, an immunoregulating agent, an immunomodulatory, an insecticide, an insect repellent, a keratolytic agent, a lactam, a metal oxide, a mitocide, a neuropeptide, a steroid, a non-steroidal anti-inflammatory agent, an oxidizing agent, a pediculicide, a photodynamic therapy agent, a retinoid, a sanative, a scabicide, a vasoconstrictor, a vasodilator, a vitamin, a vitamin D derivative, niacinamide, a wound healing agent, a wart remover; an agent having activity against superficial basal cell carcinomas, actinic keratoses, Bowen's disease, or other squamous cell carcinomas and molluscum contagiosum; an agent having activity against herpes simplex virus infections, other viral infections, or eczema; and a mixture of two or more thereof.

### Claim 18 (depends on 16)

A method of treating or ameliorating a skin, mucosal or body cavity disorder of a subject, comprising topically administering to the subject a foam produced from the foamable composition of claim 16, wherein the disorder is selected from the group consisting of dermatological inflammation, acne, acne vulgaris, inflammatory acne, non-inflammatory acne, nodular papulopustular acne, dermatitis, bacterial skin infections, hidradenitis suppurativa, molluscum contagiosum, psoriasis, pityriasis rubra pilaris, sunburn, photosensitivity, keratosis pilaris, ichthyosis, rosacea, aging skin, wrinkles, and sun spots.

### Claim 19 (depends on 17)

The foamable composition of claim 17, wherein the active agent is a combination of a retinoid and niacinamide.

### Claim 20 (depends on 16)

A method of treating or ameliorating a skin, mucosal or body cavity disorder of a subject, comprising topically administering to the subject a foam produced from the foamable composition of claim 16, wherein the disorder is selected from the group consisting of external genital and perianal warts, superficial basal cell carcinomas, actinic keratoses, skin neoplasia, and melanoma.