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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11578009 B1

PDFFull Text
Date of Patent:
Feb. 14, 2023

Filed:

May. 09, 2019

Urea-based blend composition and method for the manufacture thereof

Applicant:

Yara International Asa, Oslo, NO;

Inventors:

Ruud Van Belzen, Middelburg, NL;

Filip Colpaert, Zwijnaarde, BE;

Assignee:

YARA INTERNATIONAL ASA, Oslo, NO;

Attorney:

Dilworth IP, LLC

Primary Examiner:

Wayne A Langel

Int. Cl.
CPC ...
C05C 9/00 (2006.01); C05G 5/30 (2020.01); C05G 3/30 (2020.01); C05G 3/20 (2020.01); C05G 3/90 (2020.01); C05D 1/00 (2006.01); C05D 9/00 (2006.01); C05G 1/00 (2006.01); C09K 15/02 (2006.01); C05D 5/00 (2006.01); A23K 20/24 (2016.01); A23K 20/26 (2016.01); A23K 40/30 (2016.01); A23K 20/105 (2016.01);
U.S. Cl.
CPC ...
C05C 9/005 (2013.01); C05D 5/00 (2013.01); C05D 9/00 (2013.01); C05G 1/00 (2013.01); C05G 3/20 (2020.02); C05G 3/30 (2020.02); C05G 3/90 (2020.02); C05G 5/30 (2020.02); C09K 15/02 (2013.01); A23K 20/105 (2016.05); A23K 20/24 (2016.05); A23K 20/26 (2016.05); A23K 40/30 (2016.05);
Abstract

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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