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US 2007/0166383 A1Published application
Anionic hydrogel matrices with ph dependent modified release as drug carriers
AssigneeSigma-Tau Industire Farmaceutiche Riunite S.P.A.
InventorsGaetano Giammona, Delia Mandracchia
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Abstract
Compositions with pH-dependent modified release are described, consisting of hydrogel matrices containing one or more active ingredients, in which said matrices are suitable for releasing said active ingredients in a prolonged manner in given sites of the body.
Claims19
Anionic hydrogel matrix obtained by chemical reticulation by means of irradiation of polymers suitably derivatised with photoreticulable groups, in the presence of acid comonomers.
Dependencies are inferred from the claim text.