Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1992-04-30
1995-07-04
Lander, Ferris
Chemistry: fertilizers
Processes and products
Forms or conditioning
71 6411, 71 6413, 71 28, 427212, C05G 300, C05G 500, C05G 900
Patent
active
054296544
ABSTRACT:
In one embodiment of the present invention, there is provided an improved controlled release fertilizer comprising a fertilizer coated with a neutralized, sulfonated EPDM polymer having from about 2% to about 50% crystallinity. Preferably, the coated fertilizer has a coating thickness of from about 1 to about 100 micrometers.
REFERENCES:
patent: 3642728 (1972-02-01), Canter
patent: 3887530 (1975-06-01), O'Farrell et al.
patent: 4988377 (1991-01-01), Manalastas et al.
Dvorak Joseph J.
Exxon Research & Engineering Co.
Lander Ferris
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