Use of a cation source to prevent decomposition of (thio)phosphoric acid triamide urease inhibitors when a phosphorus-containing fertilizer is present

Patent metadata

Field	Value
Publication number	US-12037300-B2
Application number	US-201716088920-A
Country	US
Kind code	B2
Filing date	Mar 23, 2017
Priority date	Apr 1, 2016
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A cation source to prevent decomposition of a (thio)phosphoric acid triamide is disclosed. A method for preventing decomposition of a (thio)phosphoric acid triamide by adding a cation source is disclosed. A mixture comprising a cation source and a (thio)phosphoric acid triamide is disclosed. A granule coated with a cation source and comprising a fertilizer is disclosed. A composition obtainable by specific processes and comprising a (thio)phosphoric acid triamide, a fertilizer mixture, and a cation source is disclosed.

First claim

The invention claimed is:

1. A method for preventing decomposition of a (thio)phosphoric acid triamide according to general formula (I)

wherein
X 1 is O or S;
R 1 is C 1 -C 20 -alkyl, C 3 -C 20 -cycloalkyl, C 6 -C 20 -aryl, C 6 -C 20 -aryl-C 1 -C 4 -alkyl, or C 1 -C 6 -(di)alkylaminocarbonyl;
R 2 is H, C 1 -C 20 -alkyl, C 3 -C 20 -cycloalkyl, C 6 -C 20 -aryl, C 6 -C 20 -aryl-C 1 -C 4 -alkyl, or C 1 -C 6 -(di)alkylaminocarbonyl; or
R 1 and R 2 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
R 3 , R 4 , R 5 , and R 6 are independently of each other selected from the group consisting of H and C 1 -C 4 -alkyl;
in a composition A comprising:
(i) the (thio)phosphoric acid triamide; and
(ii) a fertilizer mixture comprising granules of a urea-containing fertilizer and granules of an additional P-containing fertilizer, wherein the urea-containing fertilizer granules and the P-containing fertilizer granules each have a particle size within the range of 1 to 5 mm, wherein a weight ratio of the P-containing fertilizer granules to the urea-containing fertilizer granules is at least 0.4;
by adding a cation source comprising a cation C m+ to the composition A, wherein
C m+ is Ca 2+ , Mg 2+ , Li + , Fe 2+ , Fe 3+ , Al 3+ , Ag + , Cu 2+ , Zn 2+ , Hg 2+ , Pb 2+ , Ba 2+ , or a quaternary ammonium group comprising at least three groups selected from the group consisting of C 1 -C 2 -alkyl and C 1 -C 2 -hydroxyalkyl;
wherein the cation source is a zeolite, an ion exchange resin, or a salt comprising a cation selected from the group consisting of Ca 2+ , Mg 2+ , Li + , Fe 2+ , Fe 3+ , Al 3+ , Ag + , Cu 2+ , Hg 2+ , Pb 2+ , and Ba 2+ and an anion selected from the group consisting of F − , Cl − , Br − , I − , SO 4 2− , and CH 3 CO 2 − .

2. The method according to claim 1 , wherein the additional P-containing fertilizer is selected from the group consisting of an NPK fertilizer, an NP fertilizer, a PK fertilizer, and a P fertilizer.

3. The method according to claim 1 , wherein the salt is selected from the group consisting of CaCl 2 and MgSO 4 .

Assignees

• Basf Se

Inventors

• Staal Maarten
• Reuvers Johannes
• Zerulla Wolfram
• Schmid Markus
• Thiel Uwe

Classifications

• C05B7/00

  Fertilisers based essentially on alkali or ammonium orthophosphates (C05B11/00 takes precedence) · CPC title

• C05G5/30

  Layered or coated, e.g. dust-preventing coatings · CPC title

• C05C9/00 Primary

  Fertilisers containing urea or urea compounds · CPC title

• C05G3/90 Primary

  for affecting the nitrification of ammonium compounds or urea in the soil · CPC title