COATED GRANULAR FERTILIZER AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a slow-acting coated granular fertilizer which is naturally degradable, good in the ability to release a fertilizer component delayingly, and is easily applicable to an industrial production process. SOLUTION: The coated granular fertilizer is prepared by coating a g...

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1. Verfasser:	TABEI NOBUAKI
Format:	Patent
Sprache:	eng
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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a slow-acting coated granular fertilizer which is naturally degradable, good in the ability to release a fertilizer component delayingly, and is easily applicable to an industrial production process. SOLUTION: The coated granular fertilizer is prepared by coating a granular fertilizer coated or not coated with a hydrophobic compound with a polyurethane coating film formed by reacting hydrogenated castor oil with a polyisocyanate component. In the reaction of the hydrogenated castor oil with the polyisocyanate component, the equivalent ratio of the NCO groups originated in the polyisocyanate component to the OH groups originated in the hydrogenated castor oil is 0.33 to 0.9. A method for producing the same is also provided. COPYRIGHT: (C)2005,JPO&NCIPI