Sustained release polymer-based water insoluble beads
AssigneesBen-Gurion University of the Negev Research and Development Authority, Yissum Research Development Company of the Hebrew University of Jerusalem
InventorsArnon Shani, Shlomo Magdassi, Ido Yosha
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Abstract
The invention provides a sustained release, polymer-based, water insoluble bead, comprising a polymeric matrix containing a plurality of emulsion droplets, said droplets being formed from at least one surface active molecule, at lease one volatile hydrophobic component and water, wherein said volatile component is released from said water insoluble bead in atmospheric air.
Claims20
A method for sustained release of a volatile material comprising:
- a) providing a water insoluble bead comprising droplets of an oil in water emulsion in a polymeric matrix, wherein the polymeric matrix comprises cross linked polymers, and at least one hydrophobic volatile component;
- and wherein said droplets comprise at least one surface active molecule;
- b) exposing the bead to atmospheric air to cause sustained release of the volatile hydrophobic component.
A method for treating a volatile material comprising the steps of:
- a) providing a water insoluble bead comprising droplets of an oil in water emulsion in a polymeric matrix, wherein the polymeric matrix comprises cross linked polymers, and at least one hydrophobic volatile component;
- and wherein said droplets comprise at least one surface active molecule;
- b) storing the bead of (a) in water so as to prevent the release of the volatile component.
A method for sustained release of a volatile material comprising:
- a) providing a water insoluble bead comprising droplets of an oil in water emulsion in a polymeric matrix, wherein the polymeric matrix comprises cross linked polymers, and at least one hydrophobic volatile component;
- and wherein said droplets comprise at least one surface active molecule;
- b) storing the bead of (a) in water so as to prevent the release of the volatile component;
- and
- c) exposing the bead to atmospheric air thereby causing sustained release of the volatile hydrophobic component.
Dependencies are inferred from the claim text.