Glufosinate formulations containing amines or ammonium salts

Abstract

The invention relates to a liquid herbicidal composition comprising a) glufosinate, or a salt thereof, an amine component; and a compound of formula (I) [R-(A) x -OSO 3 − ]-M + (I); wherein al variables have a meaning as defined herein. It also relates to a method for increasing the herbicidal activity of liquid herbicidal compositions comprising glufosinate or a salt thereof, and a compound of formula (I) comprising the step of contacting the liquid herbicidal composition with the amine component; and to a method for treating plant propagation material comprising the step of treating plant propagation material with the herbicidal composition.

1 . A liquid herbicidal composition comprising
 a) glufosinate, or a salt thereof;   b) an amine component selected from primary, secondary, tertiary amines, and ammonium salts thereof, and quaternary ammonium salts;   wherein the molecular weight of the primary, secondary or tertiary amines, of the ammonium cation in the ammonium salts, or of the quaternary ammonium cation in the quaternary ammonium salts is from 32 to 200 g/mol;   c) a compound of formula (I)
   [R-(A) x -OSO 3   − ]-M +   (I);
 
   wherein
 R is C 10 -C 16 -alkyl, C 10 -C 16 -alkenyl, or C 10 -C 16 -alkynyl; 
   each A is independently a group   
       
         
           
           
               
               
           
         
         wherein
 R A , R B , R C , and R D  are independently H, CH 3 , or CH 2 CH 3  with the proviso that the sum of C-atoms of R A , R B , R C , and R D  is up to 2; 
 
         M +  is a monovalent cation; and 
         the index x is a number from 1 to 10; 
         wherein the amine component is an amine selected from ethanolamine, diglycolamine, 1-aminopropan-2-ol, 2-dimethylaminoethanol, or an ammonium salt thereof, or a salt of trishydroxyethylmethyl ammonium. 
       
     
     
         2 . The composition according to  claim 1 , wherein the index x is from 1 to 3. 
     
     
         3 . The composition according to  claim 1 , wherein R A , R B , R C , and R D  are H. 
     
     
         4 . The composition according to  claim 1 , wherein M +  is Na + . 
     
     
         5 . The composition according to  claim 1 , wherein the pH is from 6 to 10. 
     
     
         6 . The composition according to  claim 1 , wherein the amine component is a chloride, sulfate, sulfonate, or methylsulfonate salt of a primary, secondary, or tertiary ammonium cation. 
     
     
         7 . The composition according to  claim 1 , wherein the component a) is the ammonium salt of glufosinate. 
     
     
         8 . The composition according to  claim 1 , comprising
 a) 5 to 50 wt % of glufosinate, (L)-glufosinate, or a salt thereof;   b) 5 to 50 wt % of the amine component;   c) 5 to 60 wt % of the compound of formula (I).   
     
     
         9 . The composition according to  claim 1 , wherein the amine component is ethanolamine. 
     
     
         10 . The composition according to  claim 1  containing a second agrochemical active ingredient selected from herbicides of classes b1) to b15) and safeners C). 
     
     
         11 . A method for increasing an herbicidal activity of a liquid herbicidal composition comprising a) glufosinate or a salt thereof and b) a compound of formula (I) comprising contacting the liquid herbicidal composition with c) an amine component as defined in  claim 1 . 
     
     
         12 . A method for treating plant propagation material comprising the treating plant propagation material with the herbicidal composition as defined in  claim 1 .