Urea-based blend composition and method for the manufacture thereof

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United States of America Patent

PATENT NO 11578009
APP PUB NO 20210070669A1
SERIAL NO

17053330

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Abstract

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The invention relates to a particulate urea-based blend composition comprising a urea-based compound in particulate form and one or more components in particulate form, selected from the group of nitrates, phosphates, sulphates and chlorides, and a urease inhibitor of the type phosphoric triamide, and a magnesium sulphate, wherein the urea-based blend composition is further characterized in that it comprises an alkaline or alkaline-forming compound, selected from the group of calcium oxide, zinc oxide, magnesium oxide, calcium carbonate, and mixtures thereof. The composition according to the invention has improved properties for reducing ammonia loss by urease activity in the soil and is in particular suitable as a fertilizer. The invention further relates to a method for the manufacture of said urea-based blend composition, as well as to a composition of kit of parts comprising an amount of a) magnesium sulphate; b) a urease inhibitor of the type phosphoric triamide, preferably N-(n-butyl) thiophosphoric triamide (nBTPT); c) an alkaline or alkaline-forming compound, selected from the group of calcium oxide, zinc oxide, magnesium oxide, calcium carbonate, and mixtures thereof, and d) optionally, one or more anti-caking and/or moisture-repellent and/or anti-dust compounds.

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Patent Owner(s)

Patent OwnerAddress
YARA INTERNATIONAL ASA0277 OSLO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Colpaert, Filip Zwijnaarde, BE 18 31
Van, Belzen Ruud Middelburg, NL 21 29

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