Controlled release fertilizer composition

Details Controlled release fertilizer composition Controlled release fertilizer composition

C - Chemistry, Metallurgy

05

G

C05G 5/00 (2006.01) C05C 9/00 (2006.01) C05G 3/00 (2006.01)

Patent

CA 2730878

A controlled release fertilizer composition and methods to produce the controlled release fertilizer composition are described. The controlled release fertilizer composition comprises a water soluble fertilizer core that is coated with a polymeric layer, intermediate layer, and a sulfur layer. If desired, the sulfur layer can be coated with an outer water-insoluble layer.

L'invention porte sur une composition d'engrais à libération progressive et sur des procédés pour fabriquer la composition d'engrais à libération progressive. La composition d'engrais à libération progressive comporte un noyau d'engrais soluble dans l'eau qui est enrobé d'une couche polymère, d'une couche intermédiaire et d'une couche de soufre. Si on le souhaite, la couche de soufre peut être recouverte d'une couche externe insoluble dans l'eau.

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