Compositions comprising macromolecular assemblies of lipid and surfactant
AssigneeMalvern Cosmeceutics Limited
InventorsStephen Tonge, Andrew Harper
Life of this patent
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Abstract
A composition comprising lipid and surfactant, characterised in that the lipid and surfactant are in the form of macromolecular assemblies of less than 100 nm in diameter. The surfactant can have a HLB number of less than 20, or be an ether or ester surfactant, or be ionic.
Claims80
A composition comprising lipid and surfactant, characterised in that the surfactant is an ether surfactant and in that the lipid and surfactant are in the form of macromolecular assemblies of less than 100 nm in diameter.
A composition comprising lipid and surfactant, characterised in that the surfactant is an ester surfactant and in that the lipid and surfactant are in the form of macromolecular assemblies of less than 100 nm in diameter.
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A composition comprising lipid and surfactant, characterised in that the surfactant is an ionic surfactant and in that the lipid and surfactant are in the form of macromolecular assemblies of less than 100 nm in diameter.
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A composition comprising lipid and surfactant, wherein the surfactant is selected from the list consisting of octoxynol-12, nonoxynol-15, octoxynol-16, nonoxynol-20, laureth-10, laureth 23, ceteth-10, ceteth-15, ceteth-20, oleth-15, oleth-20, C11-15 pareth-15, C11-15 pareth-20, C12-C13 pareth-23, ceteareth-25, isoceteth-20, polysorbate 20, sucrose laurate, sucrose myristate, decyl glucoside, PEG-5 cocamine, PEG-15 cocamine, sodium lauroyl glutamate, sodium cocoyl glycinate, sodium cocoyl glutamate, potassium lauryl wheat amino acids, sodium lauryl wheat amino acids, sodium lauryl oat amino acids and surfactin, and wherein the lipid and surfactant are in the form of macromolecular assemblies of less than 100 nm in diameter.
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A composition according to 1, wherein the lipid is a lipid mixture of at least 50% phospholipids having a single headgroup type by weight.
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A composition according to 92, wherein the active agent is present in an amount of 0.001-50% of the weight of surfactant and lipid.
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Dependencies are inferred from the claim text.