Mixture for the treatment of urea-containing fertilizers

US8603211B2 · kind B2 · utility

Assignee

• FERTIVA GmbH · DE

Inventors

• Ralf-Thomas Rahn · Mannheim, DE
• Gerd Buehler · Speyer, DE
• Alexander Wissemeier · Speyer, DE
• Wolfgang Weigelt · Dudenhofen, DE

Key dates

• Filing date: Dec 18, 2008
• Grant date: Dec 10, 2013
• Expiry date: Dec 28, 2029

Classification

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

Abstract

A mixture for the treatment of urea-containing fertilizers comprises a) at least one (thio)phosphoric acid triamide of the general formula (I) R1R2N—P(X)(NH2)2 and/or (thio)phosphoric acid diamide of the general formula (II) R1O—P(X)(NH2)2, X denoting oxygen or sulfur, R1 and R2 independently from each other being hydrogen, substituted or unsubstituted 2-nitrophenyl, C1-10-alkyl, C3-10-cycloalkyl, C3-10-heterocycloalkyl, C6-10-aryl, C6-10-heteroaryl or diaminocarbonyl, where R1 and R2 together with the nitrogen atom connecting them can also form a 5 or 6-membered saturated or unsaturated heterocyclic group, which optionally may also comprise one or two additional heteroatoms selected from the group consisting of nitrogen, oxygen, and sulfur, as component A, and b) at least one compound comprising an amino group having a boiling point of more than 100° C. as component B.