GB2145107A — Preparation of aerosol compositions

USPTO Abstract

The invention relates to the preparation of aerosol compositions. The invention provides a method for the preparation of liposomes in which at least two separate components are brought together under pressure, a first component comprising water and a second component comprising a lipid material. The components are then passed as a mixture under pressure through a nozzle or other arrangement to produce an aerosol spray containing liposomes. In addition, at least one of the first or second components preferably includes a separate active material. The invention also provides a pack for use in preparing a liposomal aerosol comprising at least a first and a second chamber, one chamber containing a first component comprising water and the other chamber containing a second component comprising a lipid material, and one or both of the chambers and/or a third chamber including a propellant material. The pack also includes an arrangement for dispensing as a spray a mixture of the first and second components fed from their respective chambers under pressure developed by the propellant material or materials.