Composite materials

Details Composite materials Composite materials

A - Human Necessities

01

N

167/153, 167/3,

A01N 25/10 (2006.01) A61K 47/00 (2006.01)

Patent

CA 1190060

Abstract of the Disclosure A composite material for the controlled release of an active substrate comprises a relatively insoluble, e.g. polymeric, matrix (11) in which a soluble particulate material (12) is dispersed. When the composite is place in an aqueous medium dissolution of the particulate material substantially increases the water permeability of the matrix. This effect may be used to provide for the controlled release of an active material into the aqueous medium.

419219

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