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Foamable composition combining a polar solvent and a hydrophobic carrier

DC
  • US 10,117,812 B2
  • Filed: 07/19/2006
  • Issued: 11/06/2018
  • Est. Priority Date: 10/25/2002
  • Status: Active Grant
First Claim
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1. A foamable pharmaceutical vehicle or composition, comprising:

  • (1) a liquid organic carrier, at a concentration of 10% to 70% by weight of the composition, wherein said organic carrier concurrently comprises;

    (i) at least one hydrophobic organic carrier comprising a triglyceride, and(ii) at least one polar solvent comprising dimethyl isosorbide,(2) a surface-active agent selected from the group consisting of at least one non-ionic surface-active agent, and a mixture of a non-ionic surface-active agent and an ionic surface-active agent, wherein the ratio of non-ionic surface-active agent to ionic surface-active agent is greater than 14;

    1;

    (3) water;

    (4) at least one liquefied or compressed gas propellant at a concentration of 3% to 25% by weight of the total composition; and

    (5) a polymeric agent selected from the group consisting of a locust bean gum, sodium caseinate, an egg albumin, a gelatin agar, a carrageenin gum, sodium alginate, a xanthan gum, a quince seed extract, a tragacanth gum, a guar gum, a starch, a chemically modified starch, a cellulose ether, an alkyl cellulose, a hydroxyalkyl cellulose, a hydroxyethyl cellulose, a hydroxypropyl cellulose, a methyl cellulose, a carboxymethyl cellulose, a methylhydroxyethylcellulose, a methylhydroxypropylcellulose, a hydroxypropylmethyl cellulose, a hydroxyethylcarboxymethylcellulose, a carboxymethylhydroxyethylcellulose, a hydroxypropyl guar gum, a soluble starch, a carboxyvinyl polymer, a polyvinylpyrrolidone, a polyvinyl alcohol, a polyacrylic acid polymer, a polymethacrylic acid polymer, a polyvinyl acetate polymer, a polyvinyl chloride polymer, a polyvinylidene chloride polymer, an acrylic acid/ethyl acrylate copolymer, a carboxyvinyl polymer, a silicone dioxide, a poly(acrylic)acid, a poly(methylvinyl ether/maleic anhydride) copolymer, a chitosan, an alginic acid, a hyaluronic acid, a pectin, a karaya gum, a cyclodextrin, a chemically modified cyclodextrin, hydroxypropyl-β

    -cyclodextrin, a poly(N-isopropylamide), a poloxamer, and mixtures of any two or more thereof; and

    wherein the composition is provided in an aerosol container and upon release expands to form a breakable foam that collapses upon application of shear force.

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