A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
167/166, 167/169
A61K 9/54 (2006.01) A01N 25/26 (2006.01) A61K 9/28 (2006.01) A61K 9/50 (2006.01)
Patent
CA 1330942
ABSTRACT The present invention relates to a bioactive composition having a controlled, sustained release delivery pattern when contacted with a suitable surrounding media. The composition comprises a pharmaceutically, insecticidally, herbicidally or fertilizing bioactive material core, soluble in a given surrounding media, the core present in an amount at least sufficient for a total dosage during a specified treatment period; a first coating enveloping the bioactive material core comprising a polymer or a blend of polymers, said polymer or blend of polymers being swellable upon penetration by the surrounding media; and a second coating enveloping the first coating, the second coating comprising a polymer or a blend of polymers being water-insoluble and forming a semi-permeable barrier to the inward diffusion of the surrounding media and the outward diffusion of the bioactive material dissolved in the surrounding media.
575911
Ambegaonkar Anil S.
Howells Roger Alan
Aaipharma Inc.
Mcfadden Fincham
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