Choline chloride in liquid guar formulations

Patent metadata

Field	Value
Publication number	US-9609862-B2
Application number	US-201514792750-A
Country	US
Kind code	B2
Filing date	Jul 7, 2015
Priority date	Jul 7, 2014
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A concentrated adjuvant composition comprises an incompletely hydrated water-soluble polymer suspended in a liquid medium, a suspension agent and a hydration inhibitor component.

First claim

The invention claimed is:

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.

Assignees

• Rhodia Operations

Inventors

• Mcknight Michelle
• Iannotta Leahann
• Ruch Thomas

Classifications

• A01N25/30

  characterised by the surfactants · CPC title

• C09K8/03

  Specific additives for general use in well-drilling compositions · CPC title

• A01N25/04 Primary

  Dispersions, {emulsions, suspoemulsions, suspension concentrates} or gels (foams A01N25/16) · CPC title