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US 5,704,961 AGranted
Corrosion inhibitors for liquid fertilizers
OwnerAlice P. Hudsoninventor
Life of this patent
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Abstract
Non-corrosive nitrogen containing fertilizer solutions are provided which contain effective levels of corrosion inhibitors which are monocarboxylic acids or polycarboxylic acids, or their salts, or mixtures thereof.
Claims20
An aqueous fertilizer composition comprised of at least one nitrogenous compound which is useful as a plant fertilizer and a corrosion inhibiting amount of at least one corrosion inhibitor selected from the group consisting of
- monocarboxylic acids containing from about 7 to about 18 carbon atoms and at least one alkyl group with at least 6 carbon atoms;
- water soluble salts of said monocarboxylic acids;
- polycarboxylic acids containing from about 2 to about 3 carboxyl moieties and from about 6 to about 12 carbon atoms per carboxyl moiety, said polycarboxylic acids having at least one group selected from alkyl or alkylene radicals with at least about 6 carbon atoms;
- and
- water soluble salts of said polycarboxylic acids.
2 more elements
A method of reducing the corrosivity of aqueous nitrogenous fertilizer compositions on metals comprising adding to said fertilizer composition at least one corrosion inhibitor chosen from the group consisting of
- monocarboxylic acids containing from about 7 to about 18 carbon atoms, and at least one alkyl group with at least 6 carbon atoms;
- water soluble salts of said monocarboxylic acids;
- polycarboxylic acids containing from about 2 to about 3 carboxyl moieties and from about 6 to about 12 carbon atoms per carboxyl moiety, said polycarboxylic acids having at least one group selected from alkyl or alkylene radicals with at least about 6 carbon atoms;
- and
- water soluble salts of said polycarboxylic acids;
- in an amount sufficient to substantially inhibit corrosion of metal surfaces which come in contact with said fertilizer compositions.
3 more elements
Dependencies are inferred from the claim text.