ADDITIVE CONTAINING N-(N-BUTYL) THIOPHOSPHORIC TRIAMIDE FOR UREA-BASED FERTILIZER

ADDITIVE CONTAINING N-(N-BUTYL) THIOPHOSPHORIC TRIAMIDE FOR UREA-BASED FERTILIZER

A dry flowable additive for aqueous urea-based fertilizers made of 3-15 % by weight of solid urea formaldehyde polymer (UFP), 0.40 to 15.0 % by weight of N-(n-butyl) thiophosphoric triamide (NBPT), and 40 to 95 % by weight of dicyandiamide (DCD), wherein the liquid fertilizer containing the additive...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SUTTON, ALLEN, R, THORNSBERRY, WILLIS
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
FERTILISERS
FERTILISERS CHARACTERISED BY THEIR FORM
MANUFACTURE THEREOF
METALLURGY
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05
MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS
NITROGENOUS FERTILISERS
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Beschreibung
Zusammenfassung:A dry flowable additive for aqueous urea-based fertilizers made of 3-15 % by weight of solid urea formaldehyde polymer (UFP), 0.40 to 15.0 % by weight of N-(n-butyl) thiophosphoric triamide (NBPT), and 40 to 95 % by weight of dicyandiamide (DCD), wherein the liquid fertilizer containing the additive provides reduced nitrogen loss from the soil. Optionally, the dry additive may also be blended with molten or solid urea to form a solid urea-based fertilizer with reduced nitrogen loss from the soil.