Granular fertilizer with a decomposable coating and process for

Details Granular fertilizer with a decomposable coating and process for Granular fertilizer with a decomposable coating and process for

1991-05-22

1993-01-05

Lander, Ferris

Chemistry: fertilizers

Processes and products

Organic material-containing

71 27, 71 6402, 71 6411, 71 6412, 71 6413, C05G 300, C05G 310

Patent

active

051767341

ABSTRACT:
A granular fertilizer with a coating which is decomposable by soil microorganisms, preferably a coating which is decomposed and degraded both on the surface layer of the soil and in the soil, and a process for producing the granular fertilizer, which coating contains a poly 3-hydroxy-3-alkylpropionic acid as an indispensable ingredient, and if necessary, a resin or a low-molecular resin and further, if necessary, an inorganic or organic powder, and which process comprises adding an organic solvent solution of the poly 3-hydroxy-3-alkylpropionic acid, and if necessary, the resin, and if necessary the powder (dispersed in the solution) to a granular fertilizer in fluided state in the form of spray, and when added, blowing a high speed hot air stream onto the fertilizer to thereby instantaneously remove the solvent and also dry the resulting fertilizer.

REFERENCES:
Kirk-Othmer Encyclopedia, 3rd Edition, vol. 13, 1981, pp. 97-98.

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