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US 11,299,435 B2Granted
Urea-based composition and method for the manufacture thereof
AssigneeYara International Asa
InventorsFilip Colpaert, Ruud Van Belzen
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AssigneeYara International Asa
InventorsFilip Colpaert, Ruud Van Belzen
Estimating the term…
The invention relates to a solid, particulate, urea-based composition comprising urea in particulate form and a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT), wherein the urea-based composition is further characterized in that it comprises one or more alkaline or alkaline-forming inorganic compounds. The composition according to the invention has been stabilized against the degradation of a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT) in the presence of urea. The invention further relates to a method for the manufacture of the claimed solid, particulate, urea-based composition.
A solid, particulate, urea-based composition comprising urea in particulate form, and a phosphoric triamide urease inhibitor, wherein the urea-based composition is further characterized in that it comprises 0.0001 to 5 weight %, relative to the total weight of the composition, of one or more alkaline or alkaline-forming inorganic compounds, wherein:
Method for improving the stability of a phosphoric triamide urease inhibitor in a solid, particulate, urea-based composition comprising urea in particulate form and said phosphoric triamide urease inhibitor, comprising the steps of:
Dependencies are inferred from the claim text.