Back to results
US 11,198,652 B2Granted
Nitrification inhibitors to improve fertilizer efficiency
OwnerGary David McKnight, Randall Linwood Rayburninventors
Life of this patent
Estimating the term…
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.
Claims21
A non-aqueous liquid fertilizer additive composition comprising
- a) biodegradable Previously Presented polymeric and/or oligomeric nitrification inhibitors that are generated under non-aqueous conditions and are the reaction product of aldehyde(s) with cyano containing nitrification inhibitors that have one or more aldehyde reactive functionalities selected from the group consisting of i) primary amines secondary amines, iii) amides, iv) thiols, v) hydroxyls and vi) phenols,
- b) a non-aqueous polar, aprotic organic liquid, NAPAOL,
- wherein the NAPAOL comprises one or more members selected from the group consisting of:
- i) dimethyl sulfoxide,
- ii) diaryl, or alkylaryl sulfoxide(s) 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 is 1 or 2,
- iii) one or more alkylene carbonates selected from the group consisting of ethylene carbonate, propylene carbonate and butylene carbonate iv) 1-Methyl-2-pyrrolidone, v) one or more organo phosphorous liquids selected from the group consisting of hexamethylphosphoramide and one or more trialkylphosphates having the formula:
- wherein:
- R22 is an alkyl radical —C1H3 to —C6H13
- R23 is an alkyl radical —C1H3 to —C6H13
- R24 is an alkyl radical —C1H3 to —C6H13
- vi) 1,2-dimethyloxyethane, vii) 2-methoxyethyl ether, and viii) cyclohexylpyrrolidone.
10 more elements
A non-aqueous fertilizer composition comprised of:
- a. one or more nitrogen sources selected from the group consisting of:
- i) urea, ii) urea formaldehyde reaction products, iii) ammonia, iv) urea formaldehyde and ammonia reaction products, v) ammonium nitrate, vi) ammonium sulfate, vii) manure viii) compost and ix) treated urea
- b. liquid fertilizer additive compositions comprising
- i) biodegradable polymeric and/or oligomeric nitrification inhibitors generated under non-aqueous conditions and that are a reaction product of aldehyde(s) with cyano containing nitrification inhibitors that have one or more aldehyde reactive functions selected from the group consisting of (a) primary amines, (b) secondary amines, (c) amides, (d) thiols, (e) hydroxyls and (f) phenols,
- b) a non-aqueous polar, aprotic organic liquid, NAPAOL, wherein the NAPAOL comprises one or more members selected from the group consisting of
- i) dimethyl sulfoxide,
- ii) dialkyl, diaryl, or alkylaryl sulfoxide(s) 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 is 1 or 2,
- iii) one or more alkylene carbonates selected from the group consisting of ethylene carbonate, propylene carbonate and butylene carbonate iv) 1-Methyl-2-pyrrolidone, v) one or more organo phosphorous liquids selected from the group consisting of hexamethylphosphoramide and one or more trialkylphosphates represented by the structure
- wherein:
- R22 is an alkyl radical —C1H3 to —C6H13
- R23 is an alkyl radical —C1H3 to —C6R13
- R24 is an alkyl radical —C1H3 to —C6H13
- vi) 1,2-dimethyloxyethane, vii) 2-methoxyethyl ether, and viii) cyclohexylpyrrolidone,
- wherein the fertilizer composition comprises 0.05-10% of the liquid fertilizer additives of biodegradable polymeric and/or oligomeric nitrification inhibitors dispersed in a NAPAOL wherein the NAPAOL comprises 0.01-9.5% of the fertilizer composition.
13 more elements
Dependencies are inferred from the claim text.