Process for producing a granular slow-acting nitrogenous fertili

Details Process for producing a granular slow-acting nitrogenous fertili Process for producing a granular slow-acting nitrogenous fertili

1990-02-07

1991-08-13

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 6405, 71 6406, 71 6407, 71 6411, C05C 900, C05C 902

Patent

active

050393286

ABSTRACT:
A process for producing a granular slow-acting nitrogenous fertilizer, which comprises blending an aqueous methylol urea solution to a urea-isobutyraldehyde condensate powder or a mixture thereof with a urea-formaldehyde condensate powder, and granulating the resulting blend while subjecting the methylol urea to dehydration condensation under an acidic condition to form a urea-formaldehyde condensate.

REFERENCES:
patent: 3441539 (1969-04-01), Schafer et al.
patent: 3870755 (1975-03-01), Kamo et al.
patent: 4283219 (1981-08-01), Wagner et al.
CA88(13):88444v, Slow Acting Fertilizers, 1977, Beglov et al.

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