Attrition-resistant, controlled release fertilizers

Details Attrition-resistant, controlled release fertilizers Attrition-resistant, controlled release fertilizers

C - Chemistry, Metallurgy

05

C

71/47

C05C 9/00 (2006.01) C05G 3/00 (2006.01)

Patent

CA 1300394

ABSTRACT OF DISCLOSURE An attrition-resistant, controlled release fer- tilizer comprising a water-soluble central mass containing nucleophilic reactive functional groups surrounded and chemically bonded to a base coating formed by reacting a molecular excess of a coupling agent with the nucleophilic groups of the central particles, and a water-insoluble layer, surrounding and chemically bonded with the base coat- ing, formed by the reaction and polymerization of the excess functional groups of the coupling agent used in forming the base coating is described. A preparation method is provided.

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