Alkyl lactone-derived corrosion inhibitors
Disclosed are alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester used in compositions and methods for inhibiting corrosion. The alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester are reaction products of an alkyl lactone and an amine, and an alkyl lactone and an alcohol, respectively.
1. A method of inhibiting corrosion of metal containments in contact with a fluid source comprising the steps of:
introducing into the fluid source a composition comprising an alkyl lactone-derived hydroxyamide or an alkyl lactone-derived hydroxyester, the alkyl lactone-derived hydroxyamide formed by a reaction between an alkyl lactone with an amine, and the alkyl lactone-derived hydroxyester formed by a reaction between an alkyl lactone with an alcohol;
wherein the fluid source is contained in an oil or gas pipeline or refinery.
2. The method of claim 1 , wherein the alkyl lactone comprises a 2 to 30 carbon atom-containing lactone.
3. The method of claim 1 , wherein the alkyl lactone comprises a 1-30 carbon atom-containing alkyl substituent.
4. The method of claim 1 , wherein the alkyl lactone is a 6 undecalactone, a γ undecalactone or a γ octalactone.
5. The method of claim 1 , wherein the amine comprises a dimethyl aminopropylamine.
6. The method of claim 1 , wherein the alkyl lactone-derived hydroxyamide or alkyl lactone-derived hydroxyester has the general formula:
wherein X=nitrogen or oxygen;
wherein R 1 =any fatty tail derived from 1-30 carbon saturated or unsaturated alkyl group or a ring structure including cyclohexyl, cyclopentyl, phenyl, benzyl, or variants thereof;
wherein R 2 =is H or any 1-10 carbon saturated or unsaturated alkyl group or a ring structure which would link to R 3 ; and
wherein R 3 =H or any 1-10 carbon saturated or unsaturated alkyl group or a ring structure which would link to R 2 .