Method for preparation of an aqueous glyphosate concentrate composition having mixture of amine salts

摘要

A method for preparing a glyphosate herbicidal aqueous concentrate to improve the handling of the concentrate, the method comprising forming a mixture of at least two nitrogen bases, and reacting the mixture of the at least two bases with glyphosate acid to provide an aqueous mixture of glyphosate salts wherein the concentration of glyphosate (based on glyphosate acid equivalent) is at least 200-gae/L.

主权项

1. A method for preparing a glyphosate herbicidal aqueous concentrate to improve the handling of the concentrate, the method comprising: forming a mixture of at least two nitrogen bases, and reacting the mixture of the at least two bases with glyphosate acid to provide an aqueous solution comprising a mixture of glyphosate salts wherein the concentration of glyphosate (based on glyphosate acid equivalent) is at least 500 gae/L, wherein the at least two nitrogen bases are selected from the group consisting of ammonia, C1 to C10alkylamine, di-(C1 to C6 alkyl)amine, tri-(C1 to C6 alkyl)amine, C1 to C10 alkanolamine, C1 to C6 alkyl(C1 to C6alkanol)amines and di-(C1 to C6 alkyl)C1 to C6alkanolamines, wherein the mixture of bases present upon said forming is not a mixture consisting of potassium hydroxide, monoethanolamine and isopropylamine, and wherein the mole ratio of the at least two nitrogen bases:glyphosate acid is in the range of from 0.9:1 to 1.3:1.