Herbicidal compositions

Patent Number: 9386768

Patent Date: 2016-07-12

Patent type: utility

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.

Inventors

First Name Last Name City State Country
James Timothy Bristow - - -

IPCs

Section Class Sub Class Group Sub Group
A 01 N 43 40

Assignee

Organization First Name Last Name City State Country
ROTAM AGROCHEM INTERNATIONAL COMPANY LIMITED - - - - -