Pfizer Corporation

John J O'Neill

Christopher A Macri

Judson C Philips

Hazen L Hoyt, Iv

Wesley L Miller

James W Miller

A method is disclosed for the containment and controlled release of and the substantial reduction of the leaching from the site of application of agricultural chemicals. In the disclosed method, the agricultural chemicals are applied to the soil dispersed in an aqueous gel-forming composition. Novel compositions of the agricultural chemicals dispersed in aqueous gel-forming compositions are also disclosed.

Agricultural gel-forming compositions

A drilling fluid additive comprises high pyruvate xanthan and locust bean gum in a weight ratio of about 40:60 to 80:20. The additive increases the viscosity of the drilling fluid at low shear, has improved thermal stability, and increases the capacity of the fluid to suspend high density weighting materials.

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Norwich, CT, United States of America

John J O'Neill