NITRIFICATION INHIBITOR COMPOSITIONS AND METHODS FOR PREPARING THE SAME
The present disclosure relates the enhanced nitrification inhibitor compositions, methods for making the same, and their use in agricultural applications.
1 . An agricultural formulation, comprising:
at least one non-aromatic polar solvent;
at least one inhibitor of nitrification, wherein the at least one inhibitor of nitrification is substantially dissolved in the at least one non-aromatic polar solvent; and at least one crystallization inhibiting additive, wherein the crystallization inhibiting additive reduces crystallization of the at least one inhibitor of nitrification when the formulation is added to water.
2 . An aqueous agricultural composition comprising the formulation according to claim 1 and water.
3 . The formulation according to claim 1 , wherein the at least one non-aromatic polar solvent is selected from the group consisting of: a glycol ether, propylene carbonate, and methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate.
4 . The formulation according to claim 1 , wherein the at least one inhibitor of nitrification comprises nitrapyrin.
5 . The formulation according to claim 4 , wherein the nitrapyrin is between about 0.1 wt. % and about 50 wt. % of the formulation.
6 . The formulation according to claim 4 , wherein the nitrapyrin is between about 30 wt. % and about 40 wt. % of the formulation.
7 . The aqueous agricultural composition according to claim 2 , wherein the at least one inhibitor of nitrification comprises nitrapyrin.
8 . The aqueous agricultural composition according to claim 7 , wherein the nitrapyrin is between about 0.1 wt. % and about 5 wt. % of the formulation.
9 . The aqueous agricultural composition according to claim 7 , wherein the nitrapyrin is between about 0.4 wt. % and about 4 wt. % of the formulation.
10 . The formulation according to claim 1 , wherein the at least one crystallization inhibiting additive comprises a polymer substantially dissolved in the formulation.
11 . The formulation according to claim 10 , wherein the polymer comprises a homopolymer of 1-ethenyl-2-pyrrolidinone.
12 . The formulation according to claim 1 , wherein the at least one crystallization inhibiting additive is selected from the group consisting of: homopolymers of 1-ethenyl-2-pyrrolidinone, ethoxylated triglycerides, and polycarboxylate polymers.
13 . The formulation according to claim 1 , wherein the at least one crystallization inhibiting additive is selected from the group consisting of: alpha-cyclodextrin, polyethylene glycols or ethers thereof, salts of polycarboxylic acids, sodium salts of lignosulfonate acids, alkali lignin reaction products with disodium sulfite and formaldehyde, acrylic copolymers, alcohol initiated EO-BO polymers, sodium arylsulfonates, fatty acids, polyarylphenol alkoxylates, vinyl acetate homopolymers, seed oils, sodium alkylaminopropionates, poly(4-ammonium styrene sulfonic acid), pigmentary synergist agents for dispersants, alkoxylated diamines, alcohol ethoxylates and polyoxyethylene sorbitan monofatty acids.
14 . The formulation according to claim 1 , wherein the at least one crystallization inhibiting additive is present at between about 2 wt. % and about 8 wt. %.
15 . The aqueous agricultural composition according to claim 2 , wherein the at least one crystallization inhibiting additive is present at between about 0.2 wt. % and about 0.8 wt. %.
16 . A method for inhibiting or reducing crystal formulation of an agricultural formulation, comprising the step of:
adding at least one crystallization inhibiting additive to a formulation comprising: at least one non-aromatic polar solvent;
at least one inhibitor of nitrification, wherein said at least one inhibitor of nitrification is substantially dissolved in the at least one non-aromatic polar solvent, and
wherein the crystallization inhibiting additive reduces crystallization of the at least one inhibitor of nitrification when the formulation is diluted in water.
17 . The method according to claim 16 , wherein the at least one non-aromatic polar solvent is selected from the group consisting of: a glycol ether, propylene carbonate, and methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate.
18 . The method according to claim 16 , wherein the at least one inhibitor of nitrification comprises nitrapyrin.
19 . The method according to claim 18 , wherein the nitrapyrin is between about 0.1 wt. % and about 50 wt. % of the formulation.
20 . The method according to claim 18 , wherein the nitrapyrin is between about 30 wt. % and about 40 wt. % of the formulation.
21 . The method according to claim 16 , wherein the formulation is diluted in water to between about 0.1 wt. % and about 5 wt. % of nitrapyrin.
22 . The method according to claim 16 , wherein the formulation is diluted in water to between about 0.4 wt. % and about 4 wt. % of nitrapyrin.
23 . The method according to claim 16 , wherein the at least one crystallization inhibiting additive comprises a polymer substantially dissolved in the formulation.
24 . The method according to claim 23 , wherein the polymer comprises a homopolymer of 1-ethenyl-2-pyrrolidinone.
25 . The method according to claim 16 , wherein the at least one crystallization inhibiting additive is selected from the group consisting of: homopolymers of 1-ethenyl-2-pyrrolidinone, ethoxylated triglycerides, and polycarboxylate polymers.
26 . The method according to claim 16 , wherein the at least one crystallization inhibiting additive is selected from the group consisting of: alpha-cyclodextrin, polyethylene glycols or ethers thereof, salts of polycarboxylic acids, sodium salts of lignosulfonate acids, alkali lignin reaction products with disodium sulfite and formaldehyde, acrylic copolymers, alcohol initiated EO-BO polymers, sodium arylsulfonates, fatty acids, polyarylphenol alkoxylates, vinyl acetate homopolymers, seed oils, sodium alkylaminopropionates, poly(4-ammonium styrene sulfonic acid), pigmentary synergist agents for dispersants, alkoxylated diamines, alcohol ethoxylates and polyoxyethylene sorbitan monofatty acids.
27 . The formulation according to claim 16 , wherein the at least one crystallization inhibiting additive is present at between about 2 wt. % and about 8 wt. %.
28 . The formulation according to claim 16 , wherein the formulation is diluted in water to between about 0.2 wt. % and about 0.8 wt. % the at least one crystallization inhibiting additive.