Patent ID: 9295249
Filing Date: 2016-03-29
CPC Classification: A01N

Claim Text:
1. A controlled-release microcapsule formulation for treating and/or preventing a pesticidal or parasitic infection or infestation of a plant comprising: (a) 0.1% to 10% by weight of at least one macrolide lactone compound; (b) an oil solvent selected from the group consisting of 2-butoxyphosphate, vegetable oils, aromatic solvents, and mixtures thereof are essentially insoluble in water wherein the oil solvent to water ratio is from 10:90 to 70:30; (c) 0.1% to 20% of a wall forming material selected from the group consisting of polyurea, polyurethane, polyurea/polyurethane, or polyurea/polyurethane-glycoluril mixture, wherein the wall that has been formed is at least 10% of the weight of the encapsulated macrolide lactone; (d) 0.1 to 3% of least one or more carbohydrate hydrocolloid selected from the group consisting of gums, derivatives of gums, and a mixture thereof, wherein each carbohydrate colloid is 0.1-3% and wherein the ratio of macrolide lactone and carbohydrate hydrocolloid is from 10:1 to 1:20; (e) 0.2% to 15% of at least one or more surface active compound selected from the group consisting of (i) one or more alkaline or alkaline-earth salt from the group consisting of naphthalene sulfonate, naphthalene formaldehyde condensates, lignosulfonate, sulfomethylated lignosulfonate, succinate groups, or sulfosuccinate groups at 0.5% to 15%, and (ii) one or more dispersants which comprises a homocopolymer of 1-ethenyl-2-pyrrolidone and a C2-C9 alkene, a homocopolymer of 1-ethenyl-2-pyrrolidone and a lower alkane, or homocopolymer of 1-ethenyl-2-pyrrolidone and a lower alcohol at 0.3% to 15%, wherein the ratio of surface active compound to macrolide lactone is from 1:333 to 1:50; wherein the average size of the microcapsules is from 0.5-50 μm; wherein the corresponding macrolide lactone(s) are microencapsulated with an efficiency of 90% or more; and wherein all the percentages referred to the total weight percent of the formulation, unless otherwise mentioned.