CONTROLLED RELEASE MICROCAPSULES

Microcapsules are prepared by encapsulating a core material with a capsu le shell wall containing glutaraldehyde crosslinked gelatin and at least one water soluble plasticizer that reduces the permeability of the crosslinked gelatin . Optionally, the capsule shell wall also contains a feeding deterr...

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Bibliographische Detailangaben
Hauptverfasser: LEW, CHEL W, MCMAHON, WILLIAM A, BRANLY, KEITH L
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung:Microcapsules are prepared by encapsulating a core material with a capsu le shell wall containing glutaraldehyde crosslinked gelatin and at least one water soluble plasticizer that reduces the permeability of the crosslinked gelatin . Optionally, the capsule shell wall also contains a feeding deterrent that dissuades accidental ingestion of the microcapsule. Upon exposing the microcapsules to water, the plasticizer is removed making the shell wall permeable whereby th e encapsulated core material is released. Materials such as insecticides, herbicides, plant growth regulating agents, and fungicides may be encapsulated and released at a controlled location, time and rate.