Rohm and Haas Company

William Dean Mathis

Robert H Gore

Warren Harvey Machleder

Bridget Marie Stevens

Yan Sun

Edward Charles Kostansek

Luong T Nguyen

Richard David Houghton

Ronald Joseph Kopko

The present invention relates to a method to produce suspension concentrates of pesticides, pharmaceuticals, biocides, and similar materials, using a melt emulsification process. The method is particularly applicable to pesticides which have a low water solubility. The particle size can be controlled to give particles from less than 5 microns (&mgr;) to less than 1&mgr;.

Method to produce pesticide suspension concentrates

Stable dispersions of certain pesticides in agricultural oil are provided. In particular, the dispersions include a particulate pesticide, agricultural oil, and an agricultural oil-soluble polymer, the polymer in some instances containing a copolymerized polar monomer. Also provided is a method for forming the stable dispersion.

Stable pesticide dispersions

The present invention relates to pesticide compositions in which at least one of the components of the composition is a polymeric material which reduces the rate of crystallization of the pesticide active ingredient in the composition. This invention also provides a method for reducing the rate of crystallization of pesticide active ingredients and a method for controlling pests comprising applying to the pest the polymer-containing composition.

Pesticide compositions

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Doylestown, PA, United States of America

William Dean Mathis