Patent ID: 9743662
Date: 2017-08-29
CPC Classifications: A01N

Claim:
1. A method of preparing a herbicidal mixture, the method comprising: combining an auxin herbicide comprising a first cation, a co-herbicide selected from the group consisting of glyphosate, glufosinate, and combinations thereof, and an adjuvant comprising a salt comprising a second cation, wherein the salt is selected from the group consisting of: (a) an ammonium salt of Formula I wherein R 1 , R 2 , R 3 , and R 4 are each butyl and X is an agronomically acceptable anion; (b) a salt containing a nitrogen heterocycle of Formula II wherein A is a 5 or 6-membered heterocyclic ring; R 5 is a C 1 -C 20 alkyl; R 6 is hydrogen or a C 1 -C 6 alkyl, and X is an agronomically acceptable anion; (c) a phosphonium salt of Formula III wherein R 7 , R 8 , R 9 , and R 10 are independently a C 1 -C 12 hydrocarbyl and X is an agronomically acceptable anion; and mixtures thereof, wherein the acid equivalent weight ratio of co-herbicide to auxin herbicide is from about 1:1 to about 5:1; wherein the molar ratio of auxin herbicide to salt of Formula I, II, and/or III is from about 1:3 to about 3:1; and wherein the herbicidal mixture has a total herbicide concentration no greater than about 40% by weight acid equivalent (a.e.).