Urea formaldehyde dispersions modified with higher aldehydes
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United States of America Patent
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Jun 1, 1982
Issued Date -
N/A
app pub date -
Jun 3, 1981
filing date -
Apr 24, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for the preparation of neutralized, urea aldehyde polymeric dispersions by acid catalyzed reaction of urea and formaldehyde plus a higher aldehyde, having from two to four carbon atoms, wherein the mol ratio of formaldehyde to the higher aldehyde is at least 2:1 and the function of the higher aldehyde is to act as an inhibitor of further polymerization. The dispersions are further stabilized against settling by the addition of thickener-suspending agents. The products of the process are useful as sources of nitrogen which continue to fertilize plants, especially grasses for long periods of time after applied by means of conventional spraying equipment.
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Cited Art Landscape
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