Alkyl thiophosphoric triamide and neem oil solvent systems for use in agricultural applications
AssigneeRhodia Operations
InventorsNilesh PATIL, Krish SHANMUGA
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Abstract
An inhibitor composition contains a urease inhibitor (e.g., alkyl thiophosphoric triamide) and a nitrification inhibitor (e.g., a natural nitrification inhibitor such as neem oil and the like), solubilized in a liquid medium comprising at least one organic solvent and, optionally, at least one stabilizer, useful in making fertilizer compositions (e.g., urea prill coatings) and in methods of fertilizing target plants.
Claims14
A stable liquid agricultural composition comprising
- at least one nitrification inhibitor comprising neem oil;
- at least one solvent selected from:
- (a) at least one dioxolane compound of formula (I.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 dibasic ester;
- c) 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—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 glycol, glycol derivative, glycerine or glycerine derivative;
- i) at least one alkylene carbonate;
- j) dimethylsulfoxide;
- k) an amine selected from monoalkanolamine, dialkanolamine, trialkanolamine, monoethanolamine, diethanolamine and triethanolamine;
- I) a sulfone or sulfolane;
- m) an aminoalkoxy alcohol;
- n) cyclohexanone or cyclopentanone;
- o) benzyl alcohol;
- or p) any combination thereof,
- wherein the at least one nitrification inhibitor is dispersed or solubilized in the at least one solvent.
A method of making a solid or concentrated liquid fertilizer composition comprising contacting one or more nitrogenous fertilizer compounds with a liquid inhibitor composition that comprises at least one nitrification inhibitor comprising neem oil, which is solubilized in a liquid medium comprising
- at least one solvent selected from:
- (a) at least one dioxolane compound of formula (I.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 dibasic ester;
- c) 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—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 glycol, glycol derivative, glycerine or glycerine derivative;
- i) at least one alkylene carbonate;
- j) dimethylsulfoxide;
- k) an amine selected from monoalkanolamine, dialkanolamine, trialkanolamine, monoethanolamine, diethanolamine and triethanolamine;
- l) a sulfone or sulfolane;
- m) an aminoalkoxy alcohol;
- n) cyclohexanone or cyclopentanone;
- o) benzyl alcohol;
- or p) any combination thereof.
A concentrated liquid fertilizer composition comprising, based on 100 parts by weight of the composition:
- from about 5 to about 80 parts by weight of one or more nitrogenous fertilizer compounds,
- at least one urease inhibitor or at least one nitrification inhibitor;
- and
- at least one solvent,
- wherein the at least one nitrification inhibitor or the at least one urease inhibitor is dispersed or solubilized in the at least one solvent, and wherein the at least one nitrification inhibitor is selected from neem, neem oil, neem cake, koronivia grass, karanj, karanjin seed extract, karanj oil, mahua, mahua oil, castor, castor oil, mint, mint oil, or any combination thereof.
Dependencies are inferred from the claim text.