Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1988-04-12
1990-11-13
Lander, Ferris H.
Chemistry: fertilizers
Processes and products
Organic material-containing
71 29, 71 30, 71 6411, 71 6412, C05C 900, C05C 1300
Patent
active
049699474
ABSTRACT:
A one-step method of preparing coated particulate plant nutrients wherein a polyfunctional coupling agent is applied to a mobile mass of plant nutrient particles containing functional groups which are chemically reactive with the functional groups of the coupling agent, while simultaneously applying a second reactive material containing functional groups also reactive with the functional groups of the coupling agent, maintaining the mobile mass at a temperature between 30.degree. C. and 300.degree. C. until a strong, water-insoluble particle. The product of the one-step method is a controlled-release plant nutrient having excellent attrition resistance.
REFERENCES:
patent: 4804403 (1989-02-01), Moore
Breiner A. W.
Lander Ferris H.
Melamine Chemicals, Inc.
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