Urea-acetaldehyde and urea-acetaldehyde-propionaldehyde solution

Details Urea-acetaldehyde and urea-acetaldehyde-propionaldehyde solution Urea-acetaldehyde and urea-acetaldehyde-propionaldehyde solution

1985-09-30

1986-05-27

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 641, 544256, 71 29, 558156, C05C 900

Patent

active

045913757

ABSTRACT:
A process for the preparation of neutralized, clear, stable solutions by acid catalyzed reaction of urea and aldehydes where the aldehydes are either acetaldehyde or mixtures of not more than 3 moles of propionaldehyde to 1 mole of acetaldehyde, at reaction pH's of from about 3.1 to 4.5 at temperatures from about 30.degree. C. to 75.degree. C. and the mole ratio of urea to aldehydes is about 1.3:1 to 2.5:1. The products of the process are useful as sprayable sources of nitrogen which are non phytotoxic and have prolonged fertilizer activity.

REFERENCES:
patent: 2729611 (1956-01-01), Chesley, Jr. et al.
patent: 3190742 (1965-06-01), Brandeis
patent: 3462256 (1969-08-01), Justice et al.
patent: 3914229 (1975-10-01), Martin et al.
patent: 4003965 (1977-01-01), Birum
patent: 4244727 (1981-01-01), Moore, Jr.
patent: 4298512 (1981-11-01), Sartoretto et al.
patent: 4332610 (1982-06-01), Sartoretto et al.

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