Polyhydroxy polymer delivery systems

Details Polyhydroxy polymer delivery systems Polyhydroxy polymer delivery systems

A - Human Necessities

01

N

167/164, 167/4,

A01N 25/26 (2006.01) A61K 9/20 (2006.01) B01J 13/02 (2006.01)

Patent

CA 1252712

ABSTRACT A biologically active agent-containing composition is prepared by reacting an aqueous emulsion or dispersion of a suitable biologically active agent and an optional filler in an aqueous solution or gel of a polyhydroxy polymer and an inorganic salt, with a boric acid or boric acid derivative until an insolubilized matrix phase is formed having entrapped therein uniformly dispersed, discontinuous domains of said agent and an optional aqueous phase that can be separated from the matrix phase by decanting, filtration, or the like; the product is then dried and ground to the desired particle size. The composition is applied to the soil or plants where the biologically active agent is slow released for controlling pests.

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