US 12,459,873 B2
Liquid formulations of urease inhibitors for fertilizers
Gary David McKnight, High Point, NC (US); David Bruce Parker, Canyon, TX (US); Yang Zehni, Ningbo (CN); Ray Perkins, Bakersville, NC (US); and Wei Xu, Sugarland, TX (US)
Assigned to SOILGENIC TECHNOLOGIES, LLC, High Point, NC (US)
Filed by SOILGENIC TECHNOLOGIES, LLC, High Point, NC (US)
Filed on Aug. 17, 2021, as Appl. No. 17/404,932.
Application 17/404,932 is a continuation of application No. 16/931,890, filed on Jul. 17, 2020, granted, now 11,365,160, issued on Jun. 21, 2022.
Application 16/931,890 is a continuation of application No. 16/799,772, filed on Feb. 24, 2020, granted, now 11,021,414, issued on Jun. 1, 2021.
Application 16/799,772 is a continuation of application No. 16/294,002, filed on Mar. 6, 2019, granted, now 10,597,338, issued on Mar. 24, 2020.
Application 16/294,002 is a continuation of application No. 15/792,288, filed on Oct. 24, 2017, granted, now 10,329,208, issued on Jun. 25, 2019.
Application 15/792,288 is a continuation of application No. 15/636,211, filed on Jun. 28, 2017, granted, now 10,301,231, issued on May 28, 2019.
Application 15/636,211 is a continuation of application No. 13/890,082, filed on May 8, 2013, granted, now 9,732,008, issued on Aug. 15, 2017.
Claims priority of provisional application 61/708,105, filed on Oct. 1, 2012.
Prior Publication US 2021/0380496 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C05C 9/00 (2006.01); C05C 9/02 (2006.01); C05G 3/90 (2020.01); C05G 5/23 (2020.01); C05G 5/30 (2020.01); C07F 9/22 (2006.01); C09K 15/28 (2006.01)
CPC C05C 9/005 (2013.01) [C05C 9/00 (2013.01); C05C 9/02 (2013.01); C05G 3/90 (2020.02); C05G 5/23 (2020.02); C05G 5/30 (2020.02); C07F 9/224 (2013.01); C09K 15/28 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A composition comprising:
a) one or more urease inhibitors,
b) a first solvent, and
c) one or more solvents selected from the group consisting of: i) a second solvent, ii) a third solvent, and iii) combinations thereof,
wherein said first solvent is one or more members selected from the group consisting of:
i. dimethyl sulfoxide, and
ii. one or more sulfoxide(s) of the structure:
R9S(O)xR10
wherein
1) R9 and R10 are each independently a C1-C6 alkylene group, an aryl group or C1-C3 alkylenearyl group, or
R9 and R10 with the sulfur to which they are attached form a 4 to 8 membered ring wherein R9 and R10 together are a C1-C6 alkylene group which optionally contains one or more atoms selected from the group consisting of O, S, Se, Te, N, and Pin the ring, and
2) x=1
wherein said second solvent comprises one or more aprotic solvents that are not identical to the first solvent,
wherein said third solvent comprises one or more protic solvents,
wherein said one or more urease inhibitors comprise one or more phosphoramides; and
wherein said one or more urease inhibitors are dissolved in said first solvent in combination with said second solvent and/or said third solvent.