Vapor phase corrosion inhibitor compositions and method of inhibiting corrosion using said compositions
AssigneeIdemitsu Kosan Co., Ltd.
InventorsHaruhito Sato, Keiji Osada
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Abstract
A method for inhibiting corrosion of metal by contacting the metal with a volatile alkyl ester of an amino acid. The invention also provides compositions containing these alkyl esters of amino acids as an active anti-corrosion inhibitor. These compositions may be fluid or semi-fluid compositions exemplified by oil-base compositions. The compositions may also be porous materials such as zeolite, silica gel, paper board, kraft paper, cloth, etc.
Claims11
The method of inhibiting corrosion of a metal comprising contacting said metal with an amount of a volatile alkyl ester of an amino acid sufficient to inhibit corrosion of said metal, the alkyl group of said acid containing not more than 7 carbon atoms and said amino acid is at least one selected from the group consisting of glycine, .alpha.-alanine, valine, leucine, isoleucine, N-methylglycine, cysteine, cystine, methionine, lysine, arginine, glutamic acid, .beta.-alanine, .gamma.-aminobutyric acid, phenylalanine, tyrosine, hystidine, tryptophane, proline and hydroxyproline.
A vapor phase corrosion inhibitor composition consisting essentially of an effective amount of an alkyl ester of an amino acid as the active vapor phase corrosion inhibitor component, and an anti-corrosion composition carrier,
- the alkyl group of said amino acid containing not more than 7 carbon atoms said amino acid is at least one selected from the group consisting of glycine, .alpha.-alanine, valine, leucine, isoleucine, N-methylglycine, cysteine, cystine, methionine, lysine, arginine, glutamic acid, .beta.-alanine, .gamma.-aminobutyric acid, phenylalanine, tyrosine, hystidine, tryptophane, proline, and hydroxyproline,
- said anti-corrosion carrier being selected from
- (i) a porous material selected from the group consisting of kraft paper, cloth, paperboard, tarpaulin paper, silica gel, and zeolites, or
- (ii) an oil selected from the group consisting of lubricating oil, light oil, synthetic hydrocarbon oil, ethylene glycol, glycol ether, and organic silicone oil.
Dependencies are inferred from the claim text.