Chemically stable, insecticidally active phosphoroamidothioate pellet compositions and methods for their manufacture
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United States of America Patent
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Apr 5, 2011
Grant Date -
Dec 23, 2004
app pub date -
Apr 16, 2004
filing date -
Dec 19, 1996
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Abstract
Chemically stable, insecticidally active pellets having a low moisture content and at least about 95% active ingredient are described, as well as a method for manufacturing them. The active ingredient is selected from a class of N-hydrocarboyl phosphoroamidothioate and phosphoroamidodithioate compounds as described in the specification. The pellets generally have a moisture content of about 0.5% by weight or less, preferably less than about 0.3% by weight. The pellets can be produced by one of two types of processes as described in detail, including a high pressure axial extrusion process and a low pressure basket extrusion process.
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