Patents
US 12767615 B2: Method for obtaining a urea-based fertilizer composition comprising a (thio)phosphoric acid triamide urease inhibitor via providing a liquid or solid premix with specific weight ratios
- Granted
- 2026-10-20
- Filed
- 2019-04-01 application 17046012
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Method for obtaining a fertilizer composition comprising (iii) at least one urea-containing fertilizer (1); and (iv) at least one (thio)phosphoric acid triamide (2) according to general formula (I) wherein X1 is O or S; R1 is C1-C20-alkyl, C3-C20-cycloalkyl, C6-C20-aryl, C6-C20-aryl-C1-C4-alkyl, or C1-C6-(di)alylaminocarbonyl; R2 is H, C1-C20-alkyl, C3-C20-cycloalkyl, C6-C20-aryl, C6-C20-aryl-C1-C4-alkyl, or C1-C6-(di)alkylaminocarbonyl; or R1 and R2 together with the nitrogen atom linking them define a 5- or 6-membered saturated or unsaturated heterocyclic radical, which optionally comprises 1 or 2 further heteroatoms selected from the group consisting of N, O, and S; and R3, R4, R5, and R6 are independently of each other selected from the group consisting of H and C1-C4-alkyl; comprising the steps: a) providing a solid and/or liquid premix (P) wherein the premix (P) comprises at least one urea-containing fertilizer (1) and at least one (thio)phosphoric acid triamide (2) in a weight ratio of 1:6 to 400:1 based on the total weight of all urea-containing fertilizers (1) and of all (thio)phosphoric acid triamides (2), wherein at least 85 wt % of the premix (P) (a1) is not a melt; and (a2) is not obtained via melting of any of the at least one urea-containing fertilizer (1) or melting of any of the at least one (thio)phosphoric acid triamide (2); and (a3) is not obtained via dissolving or mixing the at least one (thio)phosphoric acid tri-amide (2) in/with a solvent (S) having a boiling point of less than 100° C., and b) adding the premix (P) to a melt (Q) comprising urea-containing fertilizer (1) by forming a mixture (M) n comprising the at least one urea-containing fertilizer (1) and the at least one (thio)phosphoric acid triamide (2), wherein the residence time of the thus formed mixture (M) before granulation is adjusted such that the at least one (thio)phosphoric acid tri-amide (2) is not or almost not decomposed in the mixture (M); and c) forming solid fertilizer granules by use of the mixture (M) comprising the at least one urea-containing fertilizer (1) and the at least one (thio)phosphoric acid triamide (2).
Source: PTBLXML, file of 2026-10-20 (ipgb20261020.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| BASF SE 6,481 patents | Foreign company or organization | Ludwigshafen, DE | PTBLXML, file of 2026-10-20 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Markus Schmid | Limburgerhof, DE | 62 | PTBLXML, file of 2026-10-20 | |
| Wolfram Zerulla | Limburgerhof, DE | 16 | PTBLXML, file of 2026-10-20 | |
| Nadine Tresch | Limburgerhof, DE | PTBLXML, file of 2026-10-20 | ||
| Maarten Staal | Limburgerhof, DE | 13 | PTBLXML, file of 2026-10-20 | |
| Uwe Thiel | Limburgerhof, DE | 2 | PTBLXML, file of 2026-10-20 | |
| Gregor Pasda | Limburgerhof, DE | 15 | PTBLXML, file of 2026-10-20 | |
| Karl-Heinrich Schneider | Limburgerhof, DE | 12 | PTBLXML, file of 2026-10-20 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| 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 ; fertilisers characterised by their form | C05G3/90 | PTBLXML, file of 2026-10-20 |
| C05C | Nitrogenous fertilisers | C05C9/005 | PTBLXML, file of 2026-10-20 |
| C07F | Acyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium | C07F9/224 | PTBLXML, file of 2026-10-20 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.