Fmc Corporation

Frank J Dominiani, Jr

Dennis C Annarelli

Timothy M Martin

Edward A DeJarnette, Jr

Alan McCracken

Janie L Zitomer

The present invention is directed to novel suspension concentrate compositions comprising finely milled crystalline sulfentrazone suspended in an aqueous glyphosate salt phase containing a surfactant component that chemically and physically stabilizes the composition.

Stable dispersions of sulfentrazone in a continuous phase of aqueous glyphosate salt

Liquid agrichemicals such as pesticides are applied to soil or crops in a continuous stream at low flow rate from microtubes without need for a mixing tank and without clogging of the microtubes during downtime, by a system mountable on a farm vehicle, the system comprising a liquid agrichemical supply tank, a water supply tank, a first conduit connecting the agrichemical supply tank to a manifold feeding the microtubes, a first pump in the conduit, water entrainment means (such as a venturi) and a second, suction pump in the conduit, a second conduit between the water supply tank and the venturi, and other conduits, valves and pressure regulators as appropriate to control the directions and rates of flow, and for recirculation or flushing. By such control, water may be entrained by the venturi for inline admixing with the agrichemical, or the venturi optionally may be bypassed for application of undiluted agrichemical.

Microtube applicator system

The alcoholysis and phenolysis of phosphorus pentasulfide is accelerated by reacting the phosphorus pentasulfide with an alcohol or phenol in the presence of a catalytic amount of a catalyst consisting essentially of water, phosphoric acid, a phosphate salt, sulfuric acid or mixtures thereof. The dialkyl- or diaryldithiophosphoric acids produced are useful in the production of such products as motor oil additives, insecticides, etc.

Method of increasing the reactivity of phosphorus pentasulfide

The calcium content of high purity concentrated phosphoric acid is reduced to not more than about 2 ppm by contacting the acid with a strong cation exchange resin.

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Flemington, NJ, United States of America

Frank J Dominiani, Jr