STOCK STABLE CONCENTRATED EMULSION OF HERBICID EFFECTIVE PHENOXYALCANCARBOXYL ACID ESTERS AND PROCEDURE FOR PREPARING THEREOF

摘要

Storage-stable, herbicidally- active compositions in the form of a concentrated aqueous emulsion comprising 30 to 75% by weight of one or more herbicidally-active phenoxyalkanecarboxylic acid esters, 1.01 to 11.1 parts by weight per 100 parts of ester of one or more oil- soluble emulsifiers which are soluble in the esters and have an HLB value of 9 to 16, and one or more ionic or non- ionic water-soluble 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 4 to 10; 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.