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, ROMEN, XING, BAOZHONG, CARSTENS, LESLIE L, HARGROVE, GARRARD LEE, MARUVADA, SRIRAMAKRISHNA
Format: Patent
Sprache:eng ; fre ; ger
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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.