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HERBICIDAL COMPOSITIONS
专利权人:
James Timothy Bristow
发明人:
James Timothy Bristow
申请号:
US13817327
公开号:
US20130172188A1
申请日:
2011.08.16
申请国别(地区):
US
年份:
2013
代理人:
摘要:
A herbicidal composition comprising an aqueous suspension of microcapsules, having a capsule wall of a porous condensate polymer, and containing a solution of fluoroxypyr in a rosin solvent system comprising rosin and/or a rosin derivative. There is also provided a herbicidal composition comprising microcapsules, having a capsule wall of a porous condensate polymer, and containing fluoroxypyr and a solvent comprising rosin and/or a rosin derivative. A method of preparing a herbicidal composition is also disclosed, comprising providing a water immiscible phase comprising fluoroxypyr and an isocyanate dissolved in a rosin solvent system comprising rosin and/or a rosin derivative; providing an aqueous phase comprising one or more surfactants; combining the water immiscible phase and the aqueous phase to form a dispersion of the water immiscible phase in the aqueous phase; adding to the resulting dispersion an amine, thereby forming microcapsules of polyurea containing droplets of the water immiscible phase; and curing the microcapsules.
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中国工程科技知识中心
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