# US 10,479,737 B2 · Composition containing N-butyl thiophosphoric triamide adducts and reaction products > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,737 B2 - Document ID: US10479737B2 - Status: Granted - Kind: B2 - Application number: 15/349,512 - Filed: 2016-11-11 - Published: 2017-05-18 - Granted: 2019-11-19 - Earliest claimed: 2015-11-16 - Assignees: Koch Agronomic Services, LLC - Applicants: Koch Agronomic Services, LLC - Inventors: Douglas Barr; Ethel Garnier; Kwame Owusu-Adom - Web page: https://patentgrep.com/patent/US10479737B2 ## CPC - C05C 9/00: Fertilisers containing urea or urea compounds - C05C 9/02: containing urea-formaldehyde condensates - C05G 3/90: for affecting the nitrification of ammonium compounds or urea in the soil - C05G 5/23: Solutions - C05G 5/27: Dispersions, e.g. suspensions or emulsions - C09K 15/26: containing nitrogen and sulfur - C09K 15/28: containing nitrogen, oxygen and sulfur - Y02P 60/21: Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures - C05C: NITROGENOUS FERTILISERS - C05G: MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS (organic fertilisers containing added bacterial cultures, mycelia, or the like C05F11/08; organic fertilisers containing plant vitamins or hormones C05F11/10); FERTILISERS CHARACTERISED BY THEIR FORM - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract Reaction products and methods for making and using such reaction products are provided. For example, a reaction product comprising an adduct formed from urea, formaldehyde, and a urease inhibitor is described, which can be provided in various forms. For example, such a reaction product can be in the form of a solid or solution. Such a reaction product can also be combined with one or more additional components, including but not limited to, additional urease inhibitor and/or a nitrogen-based fertilizer composition. ## Claims ### Claim 1 A composition comprising a urea-formaldehyde concentrate (UFC) and one or more adducts of N-(n-butyl)thiophosphoric triamide (NBPT), urea, and formaldehyde, wherein the one or more adducts comprise about 1% by weight to about 70% by weight of the composition. ### Claim 2 (depends on 1) The composition of claim 1, wherein the one more adducts of N-(n-butyl)thiophosphoric triamide (NBPT) are represented by the following structure: ### Claim 3 (depends on 1, 2) The composition of claim 1 or 2, wherein the composition is substantially free of dicyandiamide. ### Claim 4 (depends on 1, 2) The composition of claim 1 or 2, wherein the UFC comprises urea and formaldehyde in a total amount of at least 50% by weight or greater. ### Claim 5 (depends on 1, 2) The composition of claim 1 or 2, wherein the UFC comprises urea and formaldehyde in a total amount of at least 75% by weight or greater. ### Claim 6 (depends on 1, 2) The composition of claim 1 or 2, wherein the UFC comprises formaldehyde in an amount of at least 50% or greater. ### Claim 7 (depends on 1, 2) The composition of claim 1 or 2, wherein the UFC comprises urea in an amount of at least 15% or greater. ### Claim 8 (depends on 1, 2) The composition of claim 1 or 2, further comprising unreacted NBPT. ### Claim 9 (depends on 8) The composition of claim 8, wherein the unreacted NBPT comprises about 10% by weight to about 90% by weight of the composition. ### Claim 10 (depends on 1, 2) The composition of claim 1 or 2 wherein the composition is a liquid. ### Claim 11 A method of making a urease inhibiting urea-formaldehyde concentrate, the method comprising combining N-(n-butyl)thiophosphoric triamide (NBPT) with urea and formaldehyde in amounts suitable to form the concentrate including one or more adducts of the NBPT, urea, and formaldehyde, wherein the one or more adducts comprise about 1% by weight to about 70% by weight of the concentrate. ### Claim 12 (depends on 11) The method of claim 11, wherein the method comprises adding the NBPT to a pre-formed urea-formaldehyde concentrate. ### Claim 13 (depends on 11) The method of claim 11, wherein the method comprises combining the NBPT with urea from a first source and formaldehyde from a second source. ### Claim 14 (depends on 11) The method of claim 11, wherein the method comprises providing a combination of urea and NBPT to a formaldehyde absorber receiving formaldehyde. ### Claim 15 (depends on 11) The method of claim 11, wherein the NBPT, urea, and formaldehyde are combined in amounts such that the formed concentrate comprises at least 75% by weight of the urea and the formaldehyde. ### Claim 16 A method of making a urease inhibiting urea-formaldehyde concentrate, the method comprising combining N-(n-butyl)thiophosphoric triamide (NBPT) with urea and formaldehyde in amounts suitable to form the concentrate including one or more adducts of the NBPT, urea, and formaldehyde, wherein the NBPT, urea, and formaldehyde are combined in amounts such that the formed concentrate comprises about 10% by weight to about 90% by weight of one or more adducts of the NBPT. ### Claim 17 A method of forming a urea fertilizer, the method comprising adding to molten urea a mixture comprising a urea-formaldehyde concentrate (UFC) and one or more adducts of N-(n-butyl)thiophosphoric triamide (NBPT), urea, and formaldehyde, wherein the one more adducts of N-(n-butyl)thiophosphoric triamide (NBPT) are represented by the following structure: ### Claim 18 (depends on 17) The method of claim 17, comprising combining NBPT with the UFC prior to adding the mixture to the molten urea. ### Claim 19 (depends on 18) The method of claim 18, wherein the NBPT is injected into a stream of the UFC that is being delivered to the molten urea.