| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a prepolymer suitable for use as a material for coating a granulated fertilizer. SOLUTION: For manufacturing the prepolymer for coating a granulated fertilizer, a polyol compound and an amine catalyst are mixed, and then a polyisocyanate compound is added to the mixture. COPYRIGHT: (C)2005,JPO&NCIPI
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