Polyurethane encapsulated fertilizer

Details Polyurethane encapsulated fertilizer Polyurethane encapsulated fertilizer

2007-09-11

2007-09-11

Sayala, C. (Department: 1761)

Chemistry: fertilizers

Processes and products

Forms or conditioning

C071S064120, C071S028000

Reexamination Certificate

active

11093552

ABSTRACT:
A polyurethane encapsulated, slow release fertilizer with a coating based upon an isocyanate component and an isocyanate-reactive component comprising a polyether polyol. The process for producing such particles comprises applying an isocyanate-reactive component comprising a polyether polyol onto fertilizer particles to form coated fertilizer particles, applying an isocyanate component onto said coated fertilizer particles; and forming the polyurethane encapsulated fertilizer particles.

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