Patent ID: 6380133
Filing Date: 2002-04-30
Classification: A01N

Abstract:
A herbicidal formulation consisting essentially of microcapsules suspended in an aqueous liquid, wherein (a) the microcapsules consist essentially of a porous polymer wall and clomazone, (b) the porous polymer wall consists essentially of the reaction product of a polyfunctional isocyanate, a cross-linking resin and a polyfunctional amine and (c) the cross-linking resin is selected from the group consisting of ammonium hydroxide, sodium hydroxide, potassium hydroxide, magnesium hydroxide, and calcium hydroxide salts of an anhydrous copolymerization product of styrene and maleic anhydride; and the ammonium hydroxide, sodium hydroxide, potassium hydroxide, magnesium hydroxide, and calcium hydroxide salts of a half acid/half ester copolymerization product of styrene and maleic anhydride.