Choline chloride in liquid guar formulations

Patent metadata

Field	Value
Publication number	US-10440948-B2
Application number	US-201715446287-A
Country	US
Kind code	B2
Filing date	Mar 1, 2017
Priority date	Jul 7, 2014
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

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 bicarbonate, choline dihydrogen citrate, choline bitarate, potassium hydrogen phosphate, potassium carbonate, or any 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 bicarbonate.

3. The composition of claim 1 wherein the hydration inhibitor component comprises choline dihydrogen citrate.

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 composition is free or substantially free of ammonium-containing compounds.

15. A concentrated adjuvant composition, comprising, based on 100 parts by weight of the composition,
from about 1 to about 20 parts by weight of a 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 choline bicarbonate, choline dihydrogen citrate, choline bitarate, potassium hydrogen phosphate, potassium carbonate, or any combination thereof;
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 .

16. The composition of claim 15 wherein the guar polymer comprises from about 2 parts to about 12 parts by weight based on 100 parts by weight of the composition.

17. The composition of claim 15 wherein the guar polymer comprises from about 2 parts to about 5 parts by weight based on 100 parts by weight of the composition.

18. The composition of claim 15 wherein the water-soluble polymer is a cationic hydroxypropyl guar or a cationic guar.

19. 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 bicarbonate, choline dihydrogen citrate, choline bitarate, potassium hydrogen phosphate, potassium carbonate, or any combination thereof.

20. The method of claim 19 further comprising contacting a suspending agent with at least one of the aqueous liquid medium, the water-soluble polymer, or the hydration inhibitor component.

21. The method of claim 19 wherein the water-soluble polymer is a cationic hydroxypropyl guar or a cationic guar.

22. The method of claim 19 further comprising contacting an agricultural pesticide compound to the composition.

Assignees

• Rhodia Operations

Inventors

• Mcknight Michelle
• Iannotta Leahann
• Ruch Thomas
• Balastre Marc

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