![]() After 2 weeks storage under daily temperature cycling between −10° C. Pickering emulsion composition E as shown above in Table 1 was prepared as follows: Isopar™ V was mixed with S-metolachlor under gentle agitation, Aerosil® OX-50 hydrophilic fumed silica was dispersed in the solution of potassium glyphosate and half of the water under high shear using a rotor-stator Turrax®, the oil phase was then added to the aqueous phase and mixed at high shear again until the target droplet size was obtained, the remaining formulation components were then added and mixed until homogeneous. After 3 weeks storage at 50° C., composition C had a 95 percentile diamete. Initially composition C had a 95 percentile droplet diameter (D(V,0.95)) of 43.2 microns and composition D had a 95 percentile diameter of 45.0 microns. The samples were prepared as follows: where necessary Styron® 666D was dissolved in S-metolachlor under agitation at about 60° C., Aerosil® 300 hydrophilic fumed silica was dispersed in tap water under gentle agitation, the oil phase was then added to the aqueous phase, this composition was then mixed under high shear using a rotor-stator Turrax® mixer for 1 to 2 minutes during which period the Aerosil® R974 hydrophobic fumed silica was added and shear was continued until the target droplet size was obtained. Pickering emulsion compositions C and D as shown above in Table 1 were prepared, these being substantially identical except that the oil phase in composition D contains Styron® 666D polystyrene at a level of 5 wt % as a percentage of the oil phase. These results show that the addition of Isopar™ V at the level. After 4 weeks storage at 38° C., composition A had a median diameter of 8.5 microns whereas composition B had a median diameter of 5.0 microns-the increase of 0.4 microns is insignificant within the experimental method. Initially composition A had a median droplet diameter (D(V,0.5)) of 6.5 microns and composition B had a mean diameter of 4.6 microns. The samples were prepared as follows: benoxacor was dissolved in S-metolachlor under agitation at about 60° C., Aerosil® 200 hydrophilic fumed silica was dispersed in tap water under high shear using a rotor-stator Turrax® mixer, the oil phase was then added to the aqueous phase and mixed at high shear again until the target droplet size was obtained. Pickering emulsion compositions A and B as shown above in Table 1 were prepared, these being identical except that the oil phase in composition B contains Isopar™ V at a level of 3 wt % as a percentage of the oil phase.
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