Preparation of improved foliar fertilizer

Details Preparation of improved foliar fertilizer Preparation of improved foliar fertilizer

1977-01-19

1979-03-20

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 30, 71 64C, 260555R, C05C 902

Patent

active

041452070

ABSTRACT:
Method for preparation of a stable, non-burning, liquid foliar fertilizer for increasing yields of field crops, from substantially urea nitrogen, which comprises: reacton of completely dissolved urea and formaldehyde for 5-10 minutes at temperatures of 50.degree. C., or less, in an acid mixture rapidly brought to pH less than 3.0, increasing reaction temperature to 70.degree. C. by use of the exothermic heat of urea-formaldehyde polymerization and continuing the reaction for 30 minutes while increasing pH stepwise to more than 4.0 by addition of ammonia; reacting 0.1 to 5.0% aliphatic alcohols with this mixture; neutralizing to pH 6.1 to 6.5 by addition of aqueous base solution; adding additional fertilizer ingredients desired, including potash and phosphate, while cooling to ambient storage temperature; and blending with gelled attapulgite clay so that final fertilizer contains 0.5 to 2% (wt) clay.

REFERENCES:
patent: T951006 (1976-10-01), Getsinger
patent: 3459528 (1969-08-01), Wiesboeck
patent: 3712879 (1973-01-01), Strickrodt et al.
patent: 4033745 (1977-07-01), Moore

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