Nitrification inhibitors to improve fertilizer efficiency
AssigneeWorld Source Enterprises, LLC
InventorsGary David McKnight, Randall Linwood Rayburn
Life of this patent
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Abstract
Disclosed are compositions and methods of making a liquid fertilizer additive of biodegradable polymeric and/or oligomeric nitrification inhibitors comprised of utilizing a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with cyano-containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols.
Claims20
1) A method of making a liquid composition, wherein said liquid composition comprises:
- a) one or more biodegradable polymers and/or oligomers and b) a non-aqueous polar, aprotic organic liquid, (NAPAOL), wherein said NAPAOL is a reaction medium for the formation of said one or more biodegradable polymers and/or oligomers, wherein said one or more biodegradable polymers and/or oligomers are a product of a reaction of one or more aldehydes with one or more nitrification inhibitors, wherein a structure of said one or more nitrification inhibitors comprise i) one or more cyano functionalities and ii) one or more aldehyde reactive functionalities, wherein said one or more aldehyde reactive functionalities are selected from the group consisting of a) one or more primary amines, b) one or more secondary amines, c) one or more amides, d) one or more thiols, e) one or more hydroxyls and f) one or more phenols, wherein the NAPAOL comprises one or more members selected from the group consisting of:
- i) dimethyl sulfoxide (DMSO),
- ii) one or more sulfoxides having the formula:
- R9S(O)xR10
- wherein R9 and R10 are each independently a C1-6 alkylene group, an aryl group, or C1-3alkylenearyl group or R9 and R10 together with the sulfur to which they are attached form a 4 to 8 membered ring wherein R9 and R10 together are a C1-6 alkylene group which optionally contains one or more atoms selected from the group consisting of O, S, Se, Te, N, and P in the ring and x equals 1 or 2,
- iii) one or more alkylene carbonates selected from the group consisting of (1) ethylene carbonate, (2) propylene carbonate, and (3)butylene carbonate, iv) 1-Methyl-2-pyrrolidone, v) one or more organo phosphorous liquids comprising hexamethylphosphoramide, vi) one or more trialkylphosphates having a structure:
- wherein:
- R22 is an alkyl radical —C1H3 to —C6H13,
- R23 is an alkyl radical —C1H3 to —C6H13, and
- R24 is an alkyl radical —C1H3 to —C6H13,
- vii) 2-methoxyethyl ether, and viii) cyclohexylpyrrolidone, and wherein the reaction medium does not comprise water.
18) A method of making a liquid composition, wherein said liquid composition comprises a) one or more biodegradable polymers and/or oligomers and b) DMSO, wherein said DMSO is a reaction medium for a formation of said one or more biodegradable polymers and/or oligomers, wherein said one or more biodegradable polymers and/or oligomers are a product of a reaction of formaldehyde with dicyandiamide, wherein said formaldehyde is derived from paraformaldehyde, and wherein the liquid composition does not comprise water.
Dependencies are inferred from the claim text.