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US 11,530,285 B2Granted
PolyHIPE-based substance-releasing systems
AssigneeTechnion Research & Development Foundation Limited
InventorsMichael S. Silverstein, Katya Kapilov-Buchman, Reinhard Effenberger, Dorit Canfi
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Abstract
A polyHIPE-based substance-releasing system capable of releasably encapsulating a highly concentrated solution and/or a room temperature solid while minimizing or avoiding burst release from the closed-cell microstructure of an elastic polyHIPE.
Claims14
A composition-of-matter comprising an elastomer and a substance encapsulated therein, wherein:
- said elastomer having a microstructure templated by an external phase of a high internal phase emulsion (HIPE);
- said HIPE is a water-in-oil emulsion;
- said microstructure being a closed-cell microstructure and said substance being encapsulated in pores of said closed-cell microstructure;
- said elastomer comprises residues of at least one acrylate monomer;
- said elastomer further comprises residues of at least one monomer capable of forming a homopolymer having a Tg lower than 20° C.;
- said substance is a room temperature solid;
- and
- said substance is releasable through said elastomer when the composition-of-matter is exposed to an aqueous environment.
5 more elements
Dependencies are inferred from the claim text.