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Oil and liquid silicone foamable carriers and formulations

  • US 9,549,898 B2
  • Filed: 10/02/2014
  • Issued: 01/24/2017
  • Est. Priority Date: 12/07/2007
  • Status: Active Grant
First Claim
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1. An essentially waterless composition in a container, comprising a carrier and a liquefied or compressed gas propellant, wherein the carrier comprises:

  • a liquid oil;

    about 0.5% to about 15% by weight of the carrier of a cyclic silicone;

    at least one foam stabilizing agent comprising a co surfactant and/or a foam adjuvant or a surfactant comprising a fatty acid ester or a mixture of any two or more thereof; and

    a minocycline or a doxycycline or both;

    a solid wax or solid oil selected from a group consisting of a solid paraffin, a hydrogenated oil, a hydrogenated emollient, palmitic acid or mixtures of any two or more thereof;

    wherein the ratio of the carrier to the propellant is 100;

    3 to 100;

    35;

    wherein upon release of the composition from the container, a foam results that does not collapse immediately and is breakable on mechanical shear; and

    wherein the minocycline or the doxycycline is stable for at least 3 weeks at 25°

    C. in the essentially waterless composition.

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