Agrochemical formulations containing microcapsules
AssigneeGAT Microencapsulation AG
InventorsVictor Casaña Giner, Miguel Gimeno Sierra, Barbara Gimeno Sierra
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Abstract
The invention refers a new formulation of fluoroxypyr or chlorpyrifos or diflufenican microencapsulated and in the form of water dispersable granules or as a part of a ZC formulation. Further the invention refers to water dispersable granules containing microcapsules that enclose fluoroxypyr and at the same time the WDG have also sulfonylureas outside of the microcapsules. Further we provide formulations in the form of SC or ZC of the aforementioned active ingredients and its combinations. Also fluoroxypyr may be replaced by any agrochemical of any biological activity that is solid at room temperature and melts below 110° C. Mixtures of actives of such formulations are also contemplated.
Claims12
A composition containing microcapsules characterized in that the active ingredient(s) are selected alternatively from the groups:
- (i) chlorpyrifos, or
- (ii) fluoroxypyr, or
- (iii) a combination of:
- (a) fluoroxypyr and (b) at least one sulfonylurea, wherein, either (a) is inside the microcapsules and (b) is(are) outside the microcapsules, or the reverse, or
- (iv) a combination of (b) at least one sulfonylurea and (c) one agrochemical compound whose melting point is below 110° C. and that is solid at room temperature,
- wherein (c) is inside the microcapsules and (b) is(are) outside the microcapsules, or the reverse,
- wherein the composition comprises a styrene acrylic polymer that is 1% to 45% by weight of the total weight of the composition;
- wherein the microcapsules are made by the reaction of wall-forming materials comprising at least one aromatic isocyanate and a glycoluril derivative having the four hydrogens of the four nitrogen atoms substituted by an alkyloxyalkylene group,
- wherein alkylene has the meaning of methylene, ethylene or isopropylene, and alkyl has the meaning methyl, ethyl or isopropyl;
- and
- wherein the microcapsules have a particle size of 1 to 30 μm.
Dependencies are inferred from the claim text.