Formulation process

Details Formulation process Formulation process

A - Human Necessities

01

N

71/8.1

A01N 25/32 (2006.01) A01N 25/04 (2006.01) A01N 43/40 (2006.01) A01N 43/90 (2006.01)

Patent

CA 1297693

FORMULATION PROCESS ABSTRACT A process of preparing a herbicidal emulsion comprising 75 grams per litre or more of a salt of a herbicidal bipyridylium diquaternary cation as an active ingredient comprising as a first step agitating an aqueous solution of a herbicidal bipyridylium diquaternary salt with an oil and a first emulsifier having a low HLB value to give a first emulsion comprising droplets of herbicidal bipyridylium diquaternary salt solution dispersed in a continuous oil phase, and as a second step, agitating the first emulsion with water and a second emulsifier having a high HLB value, to give a second emulsion comprising drops of the first emulsion dispersed in a continuous aqueous phase. The emulsions have a lower oral toxicity than conventional aqueous formulations.

556473

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