Wax foamable vehicle and pharmaceutical compositions thereof
First Claim
Patent Images
1. A foamable emulsion composition comprising:
- A. a carrier comprising;
a. a liquid wax comprising at least one fatty acid or at least one fatty alcohol;
b. a stabilizer component comprising a non ionic surface-active agent;
c. water; and
d. more than 7% by weight of a solid wax of the carrier selected from the group consisting of a fatty acid, a fatty alcohol, a microcrystalline wax, a paraffin wax, a petroleum wax, a polyethylene wax, beeswax, candelilla wax, castor wax, Chinese wax, Fischer-Tropsch wax, rice bran wax, tallow, wool wax and mixtures thereof; and
B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition;
wherein, when the liquid wax comprises at least one fatty acid, the fatty acid is present in the composition at a concentration of more than 35% or about 35% by weight of the carrier;
wherein, when the liquid wax comprises at least one fatty alcohol, the fatty alcohol is present in the composition at a concentration of more than 12% or about 12% by weight of the carrier;
wherein the liquid wax enables the solid wax to solubilize;
wherein the composition is substantially free from crystals and is sufficiently flowable;
wherein the carrier being otherwise free of polymeric agent; and
wherein, upon release from a pressurized container, a breakable foam is produced.
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Accused Products
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.
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Citations
57 Claims
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1. A foamable emulsion composition comprising:
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A. a carrier comprising; a. a liquid wax comprising at least one fatty acid or at least one fatty alcohol; b. a stabilizer component comprising a non ionic surface-active agent; c. water; and d. more than 7% by weight of a solid wax of the carrier selected from the group consisting of a fatty acid, a fatty alcohol, a microcrystalline wax, a paraffin wax, a petroleum wax, a polyethylene wax, beeswax, candelilla wax, castor wax, Chinese wax, Fischer-Tropsch wax, rice bran wax, tallow, wool wax and mixtures thereof; and B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition; wherein, when the liquid wax comprises at least one fatty acid, the fatty acid is present in the composition at a concentration of more than 35% or about 35% by weight of the carrier;
wherein, when the liquid wax comprises at least one fatty alcohol, the fatty alcohol is present in the composition at a concentration of more than 12% or about 12% by weight of the carrier;wherein the liquid wax enables the solid wax to solubilize; wherein the composition is substantially free from crystals and is sufficiently flowable; wherein the carrier being otherwise free of polymeric agent; and wherein, upon release from a pressurized container, a breakable foam is produced. - View Dependent Claims (2, 6, 7, 8, 11, 15, 17, 21, 24, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 38, 40, 41, 42, 43, 44, 46, 47)
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3. A foamable emulsion composition comprising:
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A. a carrier comprising; a. more than 10% or about 10% by weight of the carrier of a solid wax selected from the group consisting of a fatty acid, a fatty alcohol, a microcrystalline wax, a paraffin wax, a petroleum wax, a polyethylene wax, beeswax, candelilla wax, castor wax, Chinese wax, Fischer-Tropsch wax, rice bran wax, tallow, wool wax and mixtures thereof; b. a liquid wax wherein the liquid wax comprises at least one fatty acid or at least one fatty alcohol; c. a stabilizer comprising a non ionic surface-active agent, a polymeric agent or a mixture thereof; d. water; and B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition; wherein the liquid wax enables the solid wax to solubilize; wherein the composition is substantially free from crystals and is sufficiently flowable; wherein, when the stabilizer component comprises a polymeric agent, the polymeric agent is present in the composition at a concentration of about 0.01% to about 5% by weight of the carrier and is selected from the group consisting of a bioadhesive agent, a gelling agent, a film forming agent and a phase change agent; and wherein, upon release from a pressurized container, a breakable foam is produced. - View Dependent Claims (4, 5, 9, 10, 12, 14, 16, 18, 19, 20, 22, 23, 25, 30, 37, 39, 45, 48)
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13. The foamable emulsion composition of claim h wherein the liquid wax is a fatty acid or fatty alcohol having 16-22 carbon atoms in its carbon backbone.
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49. A foamable emulsion composition comprising:
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A. a carrier comprising; a. about 20% to about 60% by weight of the carrier of isostearic acid; b. a solid wax selected from the group consisting of a fatty acid and a fatty alcohol and mixtures thereof; c. a non ionic surface-active agent; d. imiquimod; and e. water; and B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition; wherein the carrier being otherwise free of polymeric agent; and wherein, upon release from a pressurized container, a breakable foam is produced. - View Dependent Claims (50, 51, 52)
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53. A foamable emulsion composition comprising:
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A. a carrier comprising a. a liquid wax comprising at least one fatty acid or at least one fatty alcohol; b. a stabilizer component comprising a non ionic surface-active agent; c. water; and d. more than 7% by weight of the carrier of a solid wax selected from the group consisting of a fatty acid, a fatty alcohol, a microcrystalline wax, a paraffin wax, a petroleum wax, a polyethylene wax, beeswax, candelilla wax, castor wax, Chinese wax, Fischer-Tropsch wax, rice bran wax, tallow, wool wax and mixtures thereof; and B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition; wherein, the liquid wax comprises at least one fatty alcohol at a concentration of more than 12% or about 12% by weight of the carrier; wherein presence of the liquid wax enables the solid wax to solubilize; wherein the composition is substantially free from crystals and is sufficiently flowable; wherein the carrier being otherwise free of polymeric agent; and wherein, upon release from a pressurized container, a breakable foam is produced.
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54. A foamable emulsion composition comprising:
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A. a carrier comprising; a. a liquid wax comprising at least one fatty acid or at least one fatty alcohol; b. a stabilizer component comprising a non ionic surface-active agent; c. water; and d. more than 7% by weight of the carrier of a solid wax selected from the group consisting of a fatty acid, a fatty alcohol, a microcrystalline wax, a paraffin wax, a petroleum wax, a polyethylene wax, beeswax, candelilla wax, castor wax, Chinese wax, Fischer-Tropsch wax, rice bran wax, tallow, wool wax and mixtures thereof; and B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition; wherein, the liquid wax comprises at least one fatty acid at a concentration of more than 35% or about 35% by weight of the carrier; wherein presence of the liquid wax enables the solid wax to solubilize; wherein the composition is substantially free from crystals and is sufficiently flowable; wherein the carrier being otherwise free of polymeric agent; and wherein upon release from a pressurized container, a breakable foam is produced.
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55. A foamable emulsion composition comprising:
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A. a carrier comprising; a. a liquid wax comprising at least one fatty acid or at least one fatty alcohol; b. a stabilizer component comprising a non ionic surface-active agent; c. water; and d. more than 8% or about 8% by weight of the carrier of a solid wax selected from the group consisting of a fatty acid, a fatty alcohol, a microcrystalline wax, a paraffin wax, a petroleum wax, a polyethylene wax, beeswax, candelilla wax, castor wax, Chinese wax, Fischer-Tropsch wax, rice bran wax, tallow, wool wax and mixtures thereof; and B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition; wherein when the liquid wax comprises at least one fatty acid, the fatty acid is present in the composition at a concentration of more than 35% or about 35% by weight of the carrier; wherein when the liquid wax comprises at least one fatty alcohol, the fatty alcohol is present in the composition at a concentration of more than 12% or about 12% by weight of the carrier; wherein the presence of liquid wax enables the solid wax to solubilize; wherein the composition is substantially free from crystals and is sufficiently flowable; wherein the carrier being otherwise free of polymeric agent; and wherein upon release from a pressurized container, a breakable foam is produced.
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56. A foamable emulsion composition comprising:
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A. a carrier comprising; a. a liquid wax comprising at least one fatty acid or at least one fatty alcohol; b. a stabilizer component comprising a non ionic surface-active agent; c. water; and d. more than 8% or about 8% by weight of the carrier of a solid wax selected from the group consisting of a fatty acid, a fatty alcohol, a microcrystalline wax, a paraffin wax, a petroleum wax, a polyethylene wax, beeswax, candelilla wax, castor wax, Chinese wax, Fischer-Tropsch wax, rice bran wax, tallow, wool wax and mixtures thereof; and B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition; wherein when the liquid wax comprises at least one fatty alcohol, the fatty alcohol is present in the composition at a concentration of more than 12% or about 12% by weight of the carrier; wherein presence of the liquid wax enables the solid wax to solubilize; wherein the composition is substantially free from crystals and is sufficiently flowable; wherein the carrier being otherwise free of polymeric agent; and wherein upon release from a pressurized container, a breakable foam is produced.
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57. A foamable emulsion composition comprising:
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A. a carrier comprising; a. a liquid wax comprising at least one fatty acid or at least one fatty alcohol; b. a stabilizer component comprising a non ionic surface-active agent; c. water; and d. more than 8% or about 8% by weight of the carrier of a solid wax selected from the group consisting of a fatty acid, a fatty alcohol, a microcrystalline wax, a paraffin wax, a petroleum wax, a polyethylene wax, beeswax, candelilla wax, castor wax, Chinese wax, Fischer-Tropsch wax, rice bran wax, tallow, wool wax and mixtures thereof; and B. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable emulsion composition; wherein when the liquid wax comprises at least one fatty acid, the fatty acid is present in the composition at a concentration of more than 35% or about 35% by weight of the carrier; wherein presence of the liquid wax enables the solid wax to solubilize; wherein the composition is substantially free from crystals and is sufficiently flowable; wherein the carrier being otherwise free of polymeric agent; and wherein upon release from a pressurized container, a breakable foam is produced.
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Specification