公开(公告)号：US20230202939A1

公开(公告)日：2023-06-29

申请号：US17919822

申请日：2021-05-07

Applicant: Yara International ASA

Inventor： Filip COLPAERT ,  Ruud VAN BELZEN

IPC: C05C3/00

CPC classification number: C05C3/005

Abstract: The present disclosure is related to a solid, particulate urea ammonium sulfate-based composition, the particles comprising a core comprising urea ammonium sulfate, and a coating layer surrounding and contacting the core, comprising from about 95 weight % to about 99.9 weight % of urea and a urease inhibitor. The composition displays a higher stability of the urease inhibitor. The present disclosure also provides a method to manufacture the solid, particulate urea ammonium sulfate-based composition.

公开(公告)号：US20220388918A1

公开(公告)日：2022-12-08

申请号：US17775170

申请日：2020-11-13

Applicant: Yara International ASA

Inventor： Filip COLPAERT ,  Ellen DONKERS ,  Ruud VAN BELZEN ,  Tom VAN DE WALLE ,  Paul VAN ELSLANDE

IPC: C05C3/00 ,  C05C9/00 ,  C05D3/00 ,  C05D9/02 ,  C05G5/12

Abstract: This present disclosure relates to a solid, particulate, urea ammonium sulphate-based composition, further comprising one or more alkaline or alkaline-forming inorganic or organic compounds that are able to interact with ammonium sulphate, a urease inhibitor of the type phosphoric triamide, and a cation source comprising a cation selected from the group consisting of Fe2+, Fe3+, Mn2+, Zn2+, Cu+, Cu2+, Ni2+, Ag+, Pt2+, Ru2+, Co3+ and Cr3+. The invention further relates to a method for the manufacture of a solid, particulate urea ammonium sulphate-based composition comprising urea, ammonium sulphate, a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT), one or more alkaline or alkaline-forming inorganic or organic compounds and a cation source. The product is in particular suitable for use as a fertilizer.

公开(公告)号：US20210261475A1

公开(公告)日：2021-08-26

申请号：US17053334

申请日：2019-05-10

Applicant: YARA INTERNATIONAL ASA

Inventor： Ruud VAN BELZEN ,  Filip COLPAERT

IPC: C05C9/00 ,  C05G5/10 ,  C05G3/90 ,  C05D9/02 ,  C05D5/00 ,  C05F11/00

Abstract: The invention relates to a particulate urea-based composition comprising elemental sulphur and a urease inhibitor of the type phosphoric triamide, wherein the urea-based composition comprising elemental sulphur is further characterized in that it comprises a magnesium sulphate. 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 a particulate urea-based composition comprising urea, elemental sulphur and a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT), as well as to a composition of kit of parts comprising a magnesium sulphate.

公开(公告)号：US20210230080A1

公开(公告)日：2021-07-29

申请号：US17053325

申请日：2019-05-07

Applicant: YARA INTERNATIONAL ASA

Inventor： Ruud VAN BELZEN ,  Filip COLPAERT

IPC: C05C9/00 ,  C05C3/00 ,  C05D9/02 ,  C05G1/00 ,  C05G3/90 ,  C05G5/12

Abstract: The invention relates to a homogeneous, solid, particulate, urea ammonium sulphate (UAS)-based composition comprising urea ammonium sulphate, a urease inhibitor of the type phosphoric triamide and magnesium sulphate, characterized in that the UAS-based composition comprises 0.02 to 1 weight % of magnesium sulphate, 0.0001 to 1 weight % of the urease inhibitor and about 5 to about 30 weight % of ammonium sulphate. 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 a homogeneous, solid, particulate urea ammonium sulphate-based composition comprising urea, ammonium sulphate and a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT), 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) optionally, 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.