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US 10,562,828 B2Granted
Stabilized DCD and/or alkyl thiophosphoric triamide solvent systems and use in agricultural applications
AssigneeRhodia Operations
InventorsHong Liu, Jiamin Wu, Andre Gomes, Krish Shanmuga, Zhiyun Chen
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Abstract
An inhibitor composition contains alkyl thiophosphoric triamide (or a mixture of alkyl thiophosphoric triamide and dicyandiamide),dissolved in a liquid medium including at least one organic solvent, at least one amine stabilizer and, optionally, at least one dye and/or at least one odor masking agent, is useful in making fertilizer compositions and in a method of fertilizing target plants.
Claims28
A stable liquid agricultural composition comprising
- N-(n-butyl)-thiophosphoric triamide (NBPT) urease inhibitor, wherein between 40 and 55 wt. % of the composition is N-(n-butyl)-thiophosphoric triamide (NBPT);
- dimethyl sulfoxide;
- and
- an amine stabilizer selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-amino-1-butanol and mixtures thereof, wherein the amine stabilizer is present in an amount of from 4 wt % to about 15 wt %, by total weight of the composition;
- wherein there is an absence of each and every compound according to formula (I.a):
- wherein R1, R2 and R3, are each independently chosen from H, a C1-C16 alkyl group, a C1-C16 alkenyl, group, a C1-C16 alkoxyalkyl group, a C7-30 alkylarylalkyl group, a C7-C30 arylalkyl group, or an aryl group, provided that at least one of R1, R2 and R3 is not H.
3 more elements
A stable liquid agricultural composition comprising:
- N-(n-butyl)-thiophosphoric triamide (NBPT) urease inhibitor, wherein between 40 and 55 wt. % of the composition is N-(n-butyl)-thiophosphoric triamide (NBPT);
- an amine stabilizer selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-amino-1-butanol and mixtures thereof, wherein the amine stabilizer is present in an amount of from 4 to 15 wt. %, by total weight of the composition;
- dimethyl sulfoxide;
- and
- an odor masking agent comprising at least one of terpineol, 4-allylanisole, limonene4-(2,6,6-Trimethyl-2-cyclohexenyl)-3-buten-2-one, isoamyl butyrate, benzaldehyde, diethyl malonate, cyclohexyl acetate, anisole, mint, oil Japanese cherry, or α-Ionone,
- wherein there is an absence of each and every compound according to formula (I.a):
- wherein R1, R2 and R3, are each independently chosen from H, a C1-C16 alkyl group, a C1-C16 alkenyl, group, a C1-C16 alkoxyalkyl group, a C7-C30 alkylarylalkyl group, a C7-C30 arylalkyl group, or an aryl group, provided that at least one of R1, R2 and R3 is not H.
4 more elements
A stable liquid agricultural composition consisting of
- between 40 and 55 wt. % N-(n-butyl)-thiophosphoric triamide (NBPT) as a urease inhibitor;
- dimethyl sulfoxide, wherein at least 38 wt. % of the composition is dimethyl sulfoxide;
- an amine stabilizer selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-amino-1-butanol and mixtures thereof, wherein the amine stabilizer is present in an amount of from 4 wt % to 15 wt %, by weight of composition;
- optionally, at least one nitrification inhibitor;
- optionally, at least one co-solvent selected from the group consisting of:
- (a) at least one dioxolane compound of formula (II.b):
- wherein R6 and R7 individually comprises a hydrogen, an alkyl group, an alkenyl group, or a phenyl group, wherein n is an integer of from 1 to 10;
- b) at least one compound of formula (III):
- R3OOC-A-CONR4R5 (III),
- wherein R3 comprises a C1-C36 alkyl group;
- wherein R4 and R5 individually comprise a C1-C36 alkyl group, wherein R4 and R5 can optionally together form a ring;
- and wherein A is a linear or a branched divalent C2-C12 alkyl group;
- and
- c) a glycol, or glycol derivative, or combinations thereof;
- and
- optionally, at least one dye;
- optionally, an odor masking agent comprising at least one member selected from the group consisting of terpineol, 4-allylanisole, limonene4-(2,6,6-Trimethyl-2-cyclohexenyl)-3-buten-2-one, isoamyl butyrate, benzaldehyde, diethyl malonate, cyclohexyl acetate, anisole, mint, oil Japanese cherry, and α-Ionone.
14 more elements
Dependencies are inferred from the claim text.