JPWO2022010867A5

JPWO2022010867A5 -

Info

Publication number: JPWO2022010867A5
Application number: JP2022581346A
Authority: JP
Publication date: 2024-05-09

Claims

1. A granular polymer micronutrient composition comprising:
a polyanionic polymer component;
and a micronutrient component selected from zinc (Zn), manganese (Mn), iron (Fe), copper (Cu), boron (B), and combinations thereof;
A granular polymer-micronutrient composition, wherein said polyanionic polymer component and said micronutrient component are compressed into homogenous composite granules having a mesh size ranging from about 6 to about 100 US mesh.

The granular polymer micronutrient composition of claim 1, wherein the homogeneous composite granules have an average particle size (d50) ranging from about 0.5 to about 2.5 mm.

The granular polymer micronutrient composition of claim 1, further comprising sulfur (S), wherein the sulfur, the polyanionic polymer component, and the micronutrient component are compressed into a homogenous composite granule.

The granular polymer micronutrient composition of claim 1, wherein the micronutrient components are released in a continuous manner in an amount ranging from about 50 to about 120 ppm for at least 24 hours.

The granular polymer micronutrient composition of claim 1, wherein the micronutrient component is complexed with the polyanionic polymer component, reducing degradation of the micronutrient component by at least 50 percent compared to a micronutrient component that is not complexed with the polyanionic polymer component.

The granular polymer micronutrient composition of claim 1, wherein the polyanionic polymer component comprises maleic acid and itaconic acid repeat units.

The granular polymer micronutrient composition of claim 1, wherein the polyanionic polymer component comprises itaconic acid, maleic acid, and sulfonate repeat units.

the polyanionic polymer component comprises at least four repeat units distributed along the length of the polymer chain, the at least four repeat units comprising at least one each of a B-type repeat unit, a C-type repeat unit, and a G-type repeat unit;
a) the B-type repeat units are independently selected from the group consisting of repeat units derived from substituted and unsubstituted monomers of maleic acid, maleic anhydride, fumaric acid, fumaric anhydride, mesaconic acid, mixtures thereof, and any isomers, esters, acid chlorides, and partial or complete salts of any of them, the B-type repeat units being optionally substituted with one or more C1-C6 straight or branched chain alkyl groups that are substantially free of ring structures and halo atoms, the salts having salt forming cations selected from the group consisting of metals, amines, and mixtures thereof;
b) the C type repeat unit is selected from the group consisting of repeat units derived from substituted or unsubstituted monomers of itaconic acid, itaconic anhydride, and any isomers, esters, and partial or complete salts of any of them, and mixtures of any of them, the C type repeat unit being optionally substituted with one or more C1-C6 straight or branched chain alkyl groups that are substantially free of ring structures and halo atoms, and the salt has a salt forming cation selected from the group consisting of metals, amines, and mixtures thereof;
2. The granular polymeric micronutrient composition of claim 1, wherein the G-type repeating unit is selected from the group consisting of repeating units derived from substituted or unsubstituted sulfonated monomers having at least one carbon-carbon double bond and at least one sulfonate group, and substantially free of aromatic rings and amide groups, and any isomers, and partial or complete salts, and any mixtures thereof, wherein the G-type repeating unit may be substituted with one or more C1-C6 linear or branched alkyl groups substantially free of ring structures and halo atoms, and wherein the salt of the G-type repeating unit has a salt-forming cation selected from the group consisting of metals, amines, and mixtures thereof.

9. The granular polymer micronutrient composition of claim 8 , wherein said polyanionic polymer component comprises one B type repeat unit, one C type repeat unit, and one G type repeat unit.

The polyanionic polymer component is
10. The granular polymer micronutrient composition of claim 9 having a repeat unit molar composition of 1 to 70 mole percent B type repeat units, 1 to 80 mole percent C type repeat units, and 0.1 to 65 mole percent G type repeat units, or 20 to 65 mole percent B type repeat units, 15 to 75 mole percent C type repeat units, and 1 to 35 mole percent G type repeat units.

9. The granular polymer micronutrient composition of claim 8 , wherein the polyanionic polymer component comprises one B type repeat unit, one C type repeat unit, and two G type repeat units.

12. The granular polymer micronutrient composition of claim 11, wherein the polyanionic polymer component comprises one maleic acid repeat unit, one itaconic acid repeat unit, and two G-type repeat units derived from methallylsulfonic acid and allylsulfonic acid, respectively .

12. The granular polymer micronutrient composition of claim 11, wherein the polyanionic polymer component has a repeat unit molar composition of 35 to 55 mole percent B-type repeat units, 20 to 55 mole percent C-type repeat units, 1 to 25 mole percent methallylsulfonic acid repeat units, and 1 to 20 mole percent allylsulfonic acid repeat units.

The polyanionic polymer component is
14. The granular polymeric micronutrient composition of claim 13 having a repeat unit molar composition of 45 mole percent maleic acid repeat units, 50 mole percent itaconic acid repeat units, 4 mole percent methallylsulfonic acid repeat units, and 1 mole percent allylsulfonic acid repeat units, or 45 mole percent maleic acid repeat units, 35 mole percent itaconic acid repeat units, 15 mole percent methallylsulfonate repeat units, and 5 mole percent allylsulfonate repeat units.

9. The granular polymer micronutrient composition of claim 8 , wherein said micronutrient component is complexed with a fraction of said anionic functional groups present in said polyanionic polymer component, thereby forming a partial salt form of said polyanionic polymer component.

13. An agricultural composition comprising the granular polymer micronutrient composition of claim 1 and a fertilizer .

17. The agricultural composition of claim 16 , wherein the fertilizer is a solid NPK fertilizer .

A method for improving plant growth and/or health, comprising applying to soil the granular polymer micronutrient composition of claim 1.

20. The method of claim 18, wherein the granular polymer micronutrient composition is applied to the soil prior to the emergence of a crop plant , or to the soil adjacent to a crop plant, to the base of the crop plant, or to the rhizosphere of the crop plant .

20. The method of claim 18, wherein the crop plant is selected from the group consisting of cereals, wheat, barley, oats, triticale, rye, rice, corn, soybean, potato, vegetables, peanuts, cotton, oilseed grapes, and fruit plants.