Anti-corrosion compositions for natural gas recovery or conveying equipment
AssigneeJacam Chemicals, L.L.C.
InventorsGene H. Zaid, Gene F. Brook, Byron G. Owen, Harlan G. McCormack
Life of this patent
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Abstract
Improved anti-corrosion systems are provided for use with hydrocarbon recovery, treatment and distribution equipment, in order to inhibit corrosion on the metal surfaces thereof. The systems include an epoxy resin, a curing agent for the resin, and a surfactant, which is the reaction product of an alkyl benzene sulfonic acid at least partially neutralized of from about 6-11 with an ammonia or amine neutralizing agent. The systems provide improved anti-corrosion protection in the case of metal surfaces not continually wetted with liquid hydrocarbons, such as crude oil.
Claims21
An anti-corrosion coating system comprising:
- an epoxy resin;
- a curing agent for the epoxy resin and selected from the group consisting of the alkoxylated amines and the imidazolines, and mixtures thereof;
- and
- a surfactant comprising an alkylbenzene sulfonic acid at least partially neutralized to a pH of from about 6-11 with a neutralizing agent selected from the group consisting of ammonia, the morpholine alkyl amines, the cyclohexylamines, the alkanolamines, the alkylene amines, and mixtures thereof,
- said epoxy resin, curing agent, and surfactant after curing thereof giving a corrosion-resistant coating for metal surfaces.
A method of treating metal surfaces which come into contact with hydrocarbons to inhibit corrosion of the metal surfaces, said method comprising the steps of applying an anti-corrosion system to said metal surfaces, and causing said system to cure and form said coating on said metal surfaces, said system including:
- an epoxy resin;
- a curing agent for the epoxy resin and selected from the group consisting of the alkoxylated amines and the imidazolines, and mixtures thereof;
- and
- a surfactant comprising an alkylbenzene sulfonic acid at least partially neutralized to a pH of from about 6-11 with a neutralizing agent selected from the group consisting of ammonia, the morpholine alkyl amines, the cyclohexylamines, the alkanolamines, the alkylene amines, and mixtures thereof.
Equipment having metallic surfaces subject to contact with hydrocarbons including a coating comprising the cured residue of an anti-corrosion system, comprising:
- an epoxy resin;
- a curing agent for the epoxy resin and selected from the group consisting of the alkoxylated amines and the imidazolines, and mixtures thereof;
- and
- a surfactant comprising an alkylbenzene sulfonic acid at least partially neutralized to a pH of from about 6-11 with a neutralizing agent selected from the group consisting of ammonia, the morpholine alkyl amines, the cyclohexylamines, the alkanolamines, the alkylene amines, and mixtures thereof,
- said epoxy resin, curing agent, and surfactant giving a corrosion-resistant coating on said metal surfaces.
Dependencies are inferred from the claim text.