CONTROLLED RELEASE AGRICHEMICAL COMPOSITION

• Main Authors: NGUYEN, Tri, JOHNSTON, Caroline, EBDON, Nicholas, ADHIKARI, Raju, O'SHEA, Michael, Shane, MUSTER, Tim, Harvey
• Format: Patent
• Language: English; French; German
• Published: 27.05.2020
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; MANUFACTURE THEREOF; METALLURGY; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRAPPING

A granular controlled release agrichemical composition having a matrix including an agrichemical active and a coating for providing controlled release of the agrichemical active from the granular composition, wherein the coating has at least one biodegradable polymer selected from the group consisting of aliphatic polyesters, polyanhydrides, polycarbonates, polyurethanes including aliphatic polyester segments, polyureas including aliphatic polyester segments, copolymers of two or more thereof and mixtures thereof wherein the coating composition includes a Lewis acid in an amount sufficient to enhance degradation of the coating.