Compositions comprising solid thiosulfates, polysulfides and/or (bi)sulfites and methods for preparing same

US12330999B2 · kind B2 · utility

Assignee

• Tessenderlo Group NV · BE

Inventors

• Michael Massoud Hojjatie · Tucson, US
• Thomas David Fairweather · Newberg, US
• Jeroen Van Cauwenbergh · Baardegem, BE
• Martijn Timmermans · Lommel, BE
• Heidi van den Rul · Genk, BE

Key dates

• Filing date: Aug 7, 2019
• Grant date: Jun 17, 2025
• Expiry date: May 6, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P60/21
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Provided in the invention are thiosulfate-urea based products (IIa) and/or a polysulfide-urea based products (IIb) and/or a (bi)sulfite-urea based products (IIc) suitable for use in fertilizers and comprising: one or more urea-containing compounds (a), one or more compounds (b), optionally, one or more urease (c1) and/or nitrification (c2) inhibitors that are different from compounds (b), and/or optionally, one or more additives (d) that are different from any of the above compounds, wherein the amount of water (e) in the product (II) is less than about 10 wt %, preferably less than about 5 wt %, wherein compounds (a) are selected from urea (a1) and/or from urea-aldehyde products (a2) and/or from urea-triazone compounds (a3), wherein compounds (b) are selected from thiosulfates (b1) and/or from polysulfides (b2) and/or from (bi)sulfites (b3). An advantage of products of the invention is that only minimal amounts of degradation products of compounds (b) are formed. Products of the invention can be made in various forms and in different ways. All of the materials of the invention are suitable for use in fertilizers and blend well with solid and liquid fertilizers standardly used.