Controlled release fertilizers made from cross-linked glyceride mixtures

A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating which is the reaction product of a mixture including a cross-linked polyol, an isocyanate and a wax is described. The cross-linked polyol is a reaction product of a polyhydroxyl compound, such as...

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Bibliographische Detailangaben
Hauptverfasser:	AVDALA, ROMEM, XING, BAOZHONG, CARSTENS, LESLIE L, HARGROVE, GARRARD LEE, MARUVADA, SRIRAMAKRISHNA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 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 ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating which is the reaction product of a mixture including a cross-linked polyol, an isocyanate and a wax is described. The cross-linked polyol is a reaction product of a polyhydroxyl compound, such as glycerol, and a triglyceride and the monoglyceride and/or diglyceride products are cross-linked with sulfur, oxygen and/or a peroxide cross-linking moiety, or are directly cross-linked at unsaturated sites in the monoglycerides and/or diglycerides.