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Wax foamable vehicle and pharmaceutical compositions thereof

  • US 9,662,298 B2
  • Filed: 01/22/2014
  • Issued: 05/30/2017
  • Est. Priority Date: 08/07/2007
  • Status: Active Grant
First Claim
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1. A foamable composition for a pharmaceutical comprising:

  • A. a carrier comprising;

    a. at least about 20% by weight of a liquid wax comprising one or more free fatty acids, wherein at least one free fatty acid is oleic acid and wherein the oleic acid is at least about 20% by weight of the carrier;

    b. a surface-active agent;

    c. a polymeric agent; and

    d. a solid wax comprising a solid paraffin wax;

    wherein the ratio of liquid wax to solid wax is about 3;

    1 to about 10;

    1, andB. a liquefied hydrocarbon gas propellant at a concentration of about 3% to about 35% by weight of the foamable composition;

    wherein the composition has a water content less than about 5% by weight;

    wherein the composition is not an emulsion; and

    wherein, upon release from a pressurized container, a breakable foam is produced.

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