Stable, concentrated herbicidal compositions
View Patent ↗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, single 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 of glufosinate or a salt thereof, based on the total weight of the composition;
b. 10 to 30 percent by weight of a lauryl ether sulfate or a salt thereof, based on the total weight of the composition;
c. 1 to 20 percent by weight of an organic solvent selected from the group consisting of propylene glycol monomethyl ether, tetrahydrofurfuryl alcohol, dipropylene glycol, and iso-propanol, based on the total weight of the composition; and
d. 1 to 15 percent by weight of a surfactant, based on the total weight of the composition, wherein the composition is present in a continuous, single phase at a temperature as low as −20 degrees C. and has a viscosity of no more than 2000 cps at temperatures as low as 0-degree C.
2. The liquid herbicidal composition of claim 1 , wherein said glufosinate or salt thereof is present in an amount from 22 to 28 percent by weight, based on the total weight of the composition.
3. The liquid herbicidal composition of claim 1 , wherein the organic solvent is present in an amount of 3 to 10 percent by weight, based on the total weight of the composition.
4. The liquid herbicidal composition 1 , wherein said surfactant is present in an amount of 6 to 12 percent by weight, based on the total weight of the composition.
5. The liquid herbicidal composition 1 , wherein weight ratio of said glufosinate or a salt thereof (a) to the lauryl ether sulfate (b) ranges from 1:0.2 to 1:5.0.
6. The liquid herbicidal composition 1 , wherein weight ratio of said glufosinate or a salt thereof(a) to the lauryl ether sulfate (b) ranges from 1:0.8 to 1:1.2.
7. The liquid herbicidal composition 1 , wherein said (a) comprises a glufosinate salt selected from the group consisting of glufosinate-ammonium salt, glufosinate-potassium salt, and glufosinate-sodium salt.
8. The liquid herbicidal composition of claim 1 , wherein said composition further comprises an agent selected from the group consisting of an auxiliary agent, a wetting agent, a dispersant, an emulsifier, a penetrant, a preservative, an antifreeze, and an evaporation inhibitor.
9. The liquid herbicidal composition of claim 1 , wherein said organic solvent comprises propylene glycol monomethyl ether.
10. The liquid herbicidal composition of claim 1 , wherein said organic solvent comprises tetrahydrofurfuryl alcohol.
11. The liquid herbicidal composition of claim 1 , wherein said organic solvent comprises dipropylene glycol.
12. The liquid herbicidal composition of claim 1 , wherein said organic solvent comprises iso-propanol.
13. A liquid herbicidal composition comprising:
a. 20 to 35 percent by weight of glufosinate or a salt thereof, based on the total weight of the composition;
b. 3 to 35 percent by weight of a lauryl ether sulfate or a salt thereof, based on the total weight of the composition;
c. 1 to 20 percent by weight of an organic solvent comprising propylene glycol monomethyl ether and dipropylene glycol; and
d. 1 to 15 percent by weight of a surfactant, based on the total weight of the composition,
wherein the composition is present in a continuous, single phase at a temperature as low as −20 degrees C. and has a viscosity of no more than 2000 cps at temperatures as low as 0-degree C.
14. The liquid herbicidal composition of claim 13 , wherein said glufosinate or salt thereof is present in an amount from 22 to 28 percent by weight, based on the total weight of the composition.
15. The liquid herbicidal composition of claim 13 , wherein the organic solvent is present in an amount of 3 to 10 percent by weight, based on the total weight of the composition.
16. The liquid herbicidal composition 13 , wherein said surfactant is present in an amount of 6 to 12 percent by weight, based on the total weight of the composition.
17. The liquid herbicidal composition 13 , wherein said a) comprises a glufosinate salt selected from the group consisting of glufosinate-ammonium salt, glufosinate-potassium salt, and glufosinate-sodium salt.
18. A liquid herbicidal composition comprising:
a. 20 to 35 percent by weight of glufosinate or a salt thereof, based on the total weight of the composition;
b. 10 to 30 percent by weight of a lauryl ether sulfate or a salt thereof, based on the total weight of the composition;
c. 1 to 20 percent by weight of an organic solvent selected from the group consisting of propylene glycol monomethyl ether, tetrahydrofurfuryl alcohol, dipropylene glycol, and iso-propanol, based on the total weight of the composition; and
d. 1 to 15 percent by weight of a C6-C 16 alkyl polyglucoside, based on the total weight of the composition,
wherein the composition is present in a continuous, single phase at a temperature as low as −20 degrees C. and has a viscosity of no more than 2000 cps at temperatures as low as 0-degree C.
19. The liquid herbicidal composition of claim 18 , wherein said glufosinate or salt thereof is present in an amount from 22 to 28 percent by weight, based on the total weight of the composition.
20. The liquid herbicidal composition of claim 18 , wherein the organic solvent is present in an amount of 3 to 10 percent by weight, based on the total weight of the composition.