CONTROLLED, SUSTAINED RELEASE PARTICLES FOR TREATING SEEDS AND PLANTS AND METHODS FOR MAKING THE PARTICLES
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United States of America Patent
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Issued Date -
Aug 22, 2013
app pub date -
Mar 15, 2013
filing date -
Aug 8, 2011
priority date (Note) -
Abandoned
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Abstract
The invention relates to active particles, including core-shell particles, having low burst, controllable, sustained release which are useful for coating seeds. The active particles can also be used in sprayable and dry formulations for treating soil or plants. The particulate coating can also contain inert organic or inorganic material. The invention also relates to methods for preparing the active particles. The methods include: adding additional material to core particles to form a shell, removing active ingredient from a core surface to create an active-depleted shell, and crosslinking the outer layers of a core to form a shell.
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