Choline chloride in liquid guar formulations
View Patent ↗A concentrated adjuvant composition comprises an incompletely hydrated water-soluble polymer suspended in a liquid medium, a suspension agent and a hydration inhibitor component.
1. A concentrated adjuvant composition, comprising, based on 100 parts by weight of the composition:
greater than 1.8 parts by weight of an incompletely hydrated water-soluble polymer suspended in a liquid medium;
a hydration inhibitor component comprising choline chloride, dibasic potassium phosphate or a combination thereof; and
a suspending agent in an amount effective to impart shear thinning properties to the composition.
2. The composition of claim 1 wherein the hydration inhibitor component comprises choline chloride.
3. The composition of claim 1 wherein the hydration inhibitor component comprises dibasic potassium phosphate.
4. The composition of claim 1 further comprising glycerine, a water conditioning agent, one or more surfactants, or a mixture thereof.
5. The composition of claim 1 wherein the water-soluble polymer is a cationic hydroxypropyl guar or a cationic guar.
6. The composition of claim 1 , wherein the suspending agent is selected from fumed silica, inorganic colloidal or colloid-forming particles, rheology modifier polymers, or mixtures thereof.
7. The composition of claim 1 wherein the water-soluble polymer is a water-soluble polysaccharide and wherein the hydration inhibitor component is present in an amount effective to inhibit hydration of the water-soluble polysaccharide in the aqueous medium and wherein the hydration inhibitor component further comprises at least one of: one or more surfactant compounds, one or more water-soluble non-surfactant salts, or one or more water dispersible organic solvents.
8. The composition of claim 1 , further comprising a pesticide active ingredient, wherein the water-soluble polymer enhances delivery of the pesticide active ingredient from the liquid medium to a target substrate.
9. The composition of claim 1 , wherein the liquid medium is an aqueous liquid medium that comprises water or water and a water immiscible organic liquid, and wherein the composition is in the form of an emulsion, a microemulsion, or a suspoemulsion.
10. The composition of claim 1 , wherein:
the water-soluble polymer is selected from polyacrylamide polymers, non-derivatized guar polymers, derivatized guar polymers, and mixtures thereof, and
the suspending agent is selected from fumed silicas, inorganic colloidal or colloid-forming particles, rheology modifier polymers, water-soluble polysaccharide polymers other than the non-derivatized or derivatized guar polymer, and mixtures thereof.
11. The composition of claim 1 wherein the composition exhibits a viscosity of less than 10 Pa·s at a shear rate of greater than or equal to 10 s −1 .
12. The composition of claim 1 wherein the composition comprises, based on 100 parts by weight of the composition, greater than 2 parts by weight of an incompletely hydrated water-soluble polymer suspended in a liquid medium.
13. The composition of claim 1 wherein the composition comprises, based on 100 parts by weight of the composition, greater than 2.4 parts by weight of an incompletely hydrated water-soluble polymer suspended in a liquid medium.
14. The composition of claim 1 wherein the hydration inhibitor component further comprises choline bicarbonate, choline dihydrogen citrate, choline bitarate, potassium hydrogen phosphate, potassium carbonate, or any combination thereof.
15. The composition of claim 1 wherein the composition is free or substantially free of ammonium-containing compounds.
16. A concentrated adjuvant composition, comprising, based on 100 parts by weight of the composition,
from about 1 to about 20 parts by weight of an incompletely hydrated guar polymer suspended in aqueous medium, said guar polymer having a weight average molecular weight of from about 100,000 to about 5,000,000 grams per mole;
a hydration inhibitor component comprising a choline salt, dibasic potassium phosphate or a combination thereof; and
a suspending agent in an amount effective to impart shear thinning properties to the composition;
wherein said composition exhibits:
(a) a viscosity of greater than or equal to 5 Pa·s at a shear rate of less than 0.01 s −1 , and
(b) a viscosity of less than 5 Pa·s at a shear rate of greater than 10 s −1 .
17. The composition of claim 16 wherein the guar polymer comprises from about 2 parts to about 12 parts by weight based on 100 parts by weight of the composition.
18. The composition of claim 16 wherein the guar polymer comprises from about 2 parts to about 5 parts by weight based on 100 parts by weight of the composition.
19. The composition of claim 16 wherein the water-soluble polymer is a cationic hydroxypropyl guar or a cationic guar.
20. A method for making a concentrated adjuvant composition that comprises a mixture of an aqueous liquid medium, an incompletely hydrated water-soluble polymer dispersed in the aqueous liquid medium, and a hydration inhibitor component for inhibiting hydration of the water-soluble polymer, comprising:
contacting the hydration inhibitor component with the aqueous liquid medium, and
contacting the water-soluble polymer with the mixture of aqueous liquid and a hydration inhibitor component to disperse the water-soluble polymer,
wherein the hydration inhibitor component comprises choline chloride, dibasic potassium phosphate or a combination thereof.
21. The method of claim 20 further comprising contacting a suspending agent with at least one of the aqueous liquid medium, the water-soluble polymer, or the hydration inhibitor component.
22. The method of claim 20 wherein the water-soluble polymer is a cationic hydroxypropyl guar or a cationic guar.
23. The method of claim 20 further comprising contacting an agricultural pesticide compound to the composition.