STABLE, CONCENTRATED HERBICIDAL COMPOSITIONS
A liquid herbicidal composition is provided, comprising: a. 20 to 35 percent by weight, based on the total weight of the composition, of a water-soluble herbicidal ingredient; b. a C 12 -C 16 alkyl ether sulfate; c. an organic solvent; and d. an alkyl polyglucoside. The composition is stable; i.e., it occurs in a substantially continuous, singe phase at temperatures as low as −20° C. It also has a viscosity of no more than 2000 cps at temperatures as low as 0° C.
1 . A liquid herbicidal composition comprising:
a. 20 to 35 percent by weight, based on the total weight of the composition, of a water-soluble herbicidal ingredient;
b. a C 8 -C 16 alkyl ether sulfate;
c. an organic solvent; and
d. an alkyl polyglucoside;
wherein the composition is present in a substantially continuous, single phase at a temperature as low as −20° C. and has a viscosity of no more than 2000 cps at temperatures as low as 0° C.
2 . The composition of claim 1 , wherein the water-soluble herbicidal ingredient comprises glufosinate-ammonium.
3 . The composition of claim 1 , wherein the composition has a viscosity of no more than 1000 cps at temperatures as low as 0° C.
4 . The composition of claim 1 , wherein the water-soluble herbicidal ingredient is present in an amount of 20 to 30 percent by weight, based on the total weight of the composition.
5 . The composition of claim 1 , wherein the C 8 -C 16 alkyl ether sulfate comprises sodium lauryl ether sulfate.
6 . The composition of claim 1 , wherein the C 8 -C 16 alkyl ether sulfate is present in an amount of 3 to 35 percent by weight, based on the total weight of the composition.
7 . The composition of claim 6 , wherein the C 8 -C 16 alkyl ether sulfate is present in an amount of 10 to 30 percent by weight, based on the total weight of the composition.
8 . The composition of claim 1 , wherein the organic solvent comprises propylene glycol monomethyl ether, tetrahydrofurfuryl alcohol, dipropylene glycol, and/or iso-propanol.
9 . The composition of claim 1 , wherein the organic solvent is present in an amount of 1 to 20 percent by weight, based on the total weight of the composition.
10 . The composition of claim 9 , wherein the organic solvent is present in an amount of 3 to 10 percent by weight, based on the total weight of the composition.
11 . The composition of claim 1 , wherein the alkyl polyglucoside comprises a C 6 -C 16 alkyl polyglucoside.
12 . The composition of claim 1 , wherein the alkyl polyglucoside is present in an amount of 1 to 15 percent by weight, based on the total weight of the composition.
13 . The composition of claim 12 , wherein the alkyl polyglucoside is present in an amount of 6 to 12 percent by weight, based on the total weight of the composition.
14 . The composition of claim 1 , wherein the composition is aqueous.
15 . The composition of claim 1 , wherein the weight ratio of the water-soluble herbicidal ingredient (a) to the C 8 -C 16 alkyl either sulfate (b) ranges from 1:0.2 to 1:5.0.
16 . The composition of claim 15 , wherein the weight ratio of the water-soluble herbicidal ingredient (a) to the C 8 -C 16 alkyl ether sulfate (b) ranges from 1:0.8 to 1:1.2.
17 . The composition of claim 1 , wherein the weight ratio of the water-soluble herbicidal ingredient (a) to the organic solvent (c) ranges from 1:0.02 to 1:1.
18 . The composition of claim 17 , wherein the weight ratio of the water-soluble herbicidal ingredient (a) to the organic solvent (c) ranges from 1:0.1 to 1:0.3.
19 . The composition of claim 1 , further comprising a defoaming agent.