STOCK-STABLE CONCENTRATED EMULSIONS OF HERBICID EFFECTIVE PHENOXYALKANIC ACID ESTERS AND PROCEDURE FOR THE PREPARATION OF SUCH EMULSIONS

摘要

Storage-stable, herbicidally- active compositions in the form of a concentrating aqueous emulsion comprising 30 to 75% by weight of one or more herbicidally-active phenoxyalkanecarboxylic acid esters, 0.1 to 5 parts by weight referred to the completed emulsion of one or more oil-soluble emulsifiers which are soluble in the esters and have an HLB value of 9 to 16, and 0.1 to 3 parts by weight referred to the completed emulsion of one or more alkali metal salts of single or multiple unsaturated fatty acid taurides or fatty acid alkyl taurides as watersoluble dispersants, the emulsion having a viscosity of 50 to 3,000 mPa.s., a droplet size of 1 to 5 mu m and a pH value of 6 to 9 and a process for the preparation of such emulsion which comprises forming a solution of the active ester and emulsifier and mixing it with an aqueous solution of the dispersant to form a homogeneous mixture.