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US 10,570,068 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 comprising 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.
Claims26
A stable liquid agricultural composition comprising
- N-(n-butyl)-thiophosphoric triamide (NBPT) as a urease inhibitor, wherein the N-(n-butyl)-thiophosphoric triamide (NBPT) is present in an amount of 14 to 35 wt %, by total weight of the composition;
- a solvent blend comprising a mixture of triethylene glycol and propylene glycol;
- optionally, dimethyl sulfoxide;
- 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;
- and
- (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
- optionally, an amine stabilizer according to formula (IV):
- wherein R1 is H, CH3, CH2CH3, or a branched or linear C2-C5 alkyl group;
- R2 is H, CH3, CH2CH3, or a branched or linear C2-C5 alkyl group;
- R3 is H, CH3 or a branched or linear
- C2-C5 alkyl group;
- and R4 is H, CH3 or a branched or linear C2-C5 alkyl group,
- wherein the composition comprises at least 60 wt. % organic solvent comprising the solvent blend, optionally dimethylsulfoxide, and optionally co-solvent.
18 more elements
A stable liquid agricultural composition comprising, by weight of composition:
- N-(n-butyl)-thiophosphoric triamide (NBPT) as a urease inhibitor, wherein the N-(n-butyl)-thiophosphoric triamide (NBPT) is present in an amount of 14 to 35 wt %, by total weight of the composition;
- a solvent blend comprising a mixture of triethylene glycol and propylene glycol;
- optionally, at most 5 wt. % dye;
- and
- optionally, less than 5 wt. % odor masking agent,
- comprising at least 60 wt. % organic solvent comprising the solvent blend, optionally dimethylsulfoxide, and optionally co-solvent.
3 more elements
A stable liquid agricultural composition consisting of
- N-(n-butyl)-thiophosphoric triamide (NBPT) as a urease inhibitor, wherein the N-(n-butyl)-thiophosphoric triamide (NBPT) is present in an amount of 14 to 35 wt %, by total weight of the composition;
- a solvent blend of triethylene glycol and propylene glycol;
- 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;
- and
- (b) at least one compound of formula (III):
- R3OOC-A-CONR4R5 (III),
- wherein R3 is a C1-C36 alkyl group;
- wherein R4 and R5 individually are 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
- optionally, an amine stabilizer according to formula (IV):
- wherein R1 is H, CH3, CH2CH3, or a branched or linear C2-C5 alkyl group;
- R2 is H, CH3, CH2CH3, or a branched or linear C2-C5 alkyl group;
- R3 is H, CH3 or a branched or linear C2-C5 alkyl group;
- and R4 is H, CH3 or a branched or linear C2-C5 alkyl group;
- optionally, at most 5 wt. % dye;
- and
- optionally, less than 5 wt. % odor masking agent,
- wherein at least 60 wt. % of the composition is organic solvent which is the total of the solvent blend, and co-solvent.
20 more elements
Dependencies are inferred from the claim text.