Solvent systems for dicyandiamide and/or alkyl thiophosphoric triamide and use in agricultural applications
AssigneeRhodia Operations
InventorsMichelle McKNIGHT, Antoine VIELLIARD, Marivi ORTIZ-SUAREZ
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Abstract
An inhibitor composition contains dicyandiamide as a nitrification inhibitor, alkyl thiophosphoric triamide as a urease inhibitor, or a combination thereof, dissolved in a liquid medium comprising an organic solvent selected from, among others, one or more polar aprotic solvents, including one or more organophosphates, amine solvents, heterocyclic alcohol solvents, and mixtures thereof, is useful in making fertilizer compositions and in a method of fertilizing target plants.
Claims20
A liquid agricultural composition comprising
- at least one of a nitrification inhibitor, a urease inhibitor or a mixture thereof;
- an organophosphate solvent of formula (VIII):
- 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 or R3 is not H;
- and
- optionally, at least one co-solvent selected from:
- (a) at least one dioxolane compound of formula (III):
- 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 dibasic ester;
- c) at least one compound of formula (IIa):
- R3OOC-A-CONR4R5 (IIa),
- 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-C6 alkyl group;
- d) at least one alkyldimethylamide;
- e) at least one alkyl lactate;
- f) ethyl levulinate;
- g) at least one alkyoxyalcohol, ether alcohol, amine alcohol, amino alcohol or alcohol;
- h) at least one glycerine or glycerine derivative;
- i) at least one alkylene carbonate;
- or
- j) dimethylsulfoxide.
A method of making a solid or concentrated liquid fertilizer composition comprising treating one or more nitrogenous fertilizer compounds with a liquid inhibitor composition that comprises at least one of a dicyandiamide or an alkyl thiophosphoric triamide, the inhibitor composition dispersed in a liquid medium comprising at least one solvent of formula (VIII):
- 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 or R3 is not H.
A concentrated liquid fertilizer composition comprising, based on 100 parts by weight of the composition:
- (a) up to about 99 parts by weight of one or more nitrogenous fertilizer compounds,
- (b) at least one of a dicyandiamide or an alkyl thiophosphoric triamide,
- (c) at least one organophosphate solvent of formula (VIII):
- 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 or R3 is not H, and
- (d) optionally, at least one co-solvent.
A method of making an aqueous end use fertilizer composition comprising contacting one or more nitrogenous fertilizer compounds with an inhibitor composition, the inhibitor compositing comprising at least one of a dicyandiamide or an alkyl thiophosphoric triamide, dispersed in a liquid medium comprising at least one solvent of formula (VIII):
- 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 or R3 is not H.
Dependencies are inferred from the claim text.