Polyalkylenepolyamines as corrosion inhibitors
AssigneeChevron Research Company
InventorsAlbert H. Schroeder, Ta Y. Ching, Shigeto Suzuki, Kiyoshi Katsumoto
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Abstract
A corrosion inhibiting polyalkylenepolyamine composition comprising a mixture of (a) at least one C-alkyl-ethylene diamine, and (b) at least one di-(C-alkyl)-diethylenetriamine or at least one di-(C-alkyl)-piperazine or a mixture thereof; wherein each C-alkyl group on the ethylene diamine, diethylenetriamine and piperazine independently contains from 10 to 28 carbon atoms. Methods for preparing this composition are also disclosed, as well as methods for its use in inhibiting corrosion of corrodible metals.
Claims46
A polyalkylenepolyamine composition comprising a mixture of
- (a) at least one C-alkyl-ethylene diamine, and
- (b) at least one di-(C-alkyl)-diethylenetriamine or at least one di-(C-alkyl)-piperazine or a mixture thereof;
- wherein each C-alkyl group on the ethylene diamine, diethylenetriamine and piperazine independently contains from 10 to 28 carbon atoms;
- and wherein the composition contains greater than 1% of component (b), relative to component (a).
A composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1,2-dihaloalkane having from 12 to 30 carbon atoms and ammonia.
A composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1-epoxyalkane having from 12 to 30 carbon atoms and ammonia, in the presence of an amination catalyst and hydrogen.
A method of inhibiting corrosion of a corrodible metal material which comprises contacting the metal material with an effective amount of a corrosion inhibiting polyalkylenepolyamine composition comprising a mixture of
- (a) at least one C-alkyl-ethylene diamine, and
- (b) at least one di-(C-alkyl)-diethylenetriamine or at least one di(C-alkyl)-piperazine or a mixture thereof;
- wherein each C-alkyl group on the ethylene diamine, diethylenetriamine and piperazine independently contains from 10 to 28 carbon atoms;
- and wherein the composition contains greater than 1% of component (b), relative to component (a).
A method of inhibiting corrosion of a corrodible metal material which comprises contacting the metal material with an effective amount of a corrosion inhibiting composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1,2-dichloroalkane having from 12 to 30 carbon atoms and ammonia.
A method of inhibiting corrosion of a corrodible metal material which comprises contacting the metal material with an effective amount of a corrosion inhibiting composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1-epoxyalkane having 12 to 30 carbon atoms and ammonia, in the presence of an amination catalyst and hydrogen.
A method of inhibiting corrosion of a corrodible metal material in or around a well through which a corrosive fluid is produced, which comprises contacting the metal material with an effective amount of a corrosion inhibiting polyalkylenepolyamine composition comprising a mixture of
- (a) at least one C-alkyl-ethylene diamine, and
- (b) at least one di-(C-alkyl)-diethylenetriamine or at least one di-(C-alkyl)-piperazine or a mixture thereof;
- wherein each C-alkyl group on the ethylene diamine, diethylenetriamine and piperazine independently contains from 10 to 28 carbon atoms;
- and wherein the composition contains greater than 1% of component (b), relative to component (a).
A method of inhibiting corrosion of a corrodible metal material in or around a well through which a corrosive fluid is produced, which comprises contacting the metal material with an effective amount of a corrosion inhibiting composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1,2-dichloroalkane having from 12 to 30 carbon atoms and ammonia.
A method of inhibiting corrosion of a corrodible metal material in or around a well through which a corrosive fluid is produced, which comprises contacting the metal material with an effective amount of a corrosion inhibiting composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1-epoxyalkane having 12 to 30 carbon atoms and ammonia, in the presence of an amination catalyst and hydrogen.
A composition comprising
- (a) about 15 to 30% of a polyalkylenepolyamine corrosion inhibitor composition comprising a mixture of
- (i) at least one C-alkyl-ethylene diamine, and
- (ii) at least one di-(C-alkyl)-diethylenetriamine or at least one di-(C-alkyl)-piperazine or a mixture thereof;
- wherein each C-alkyl group on the ethylene diamine, diethylenetriamine and piperazine independently contains from 10 to 28 carbon atoms;
- and wherein the polyalkylenepolyamine composition contains greater than 1% of component (ii), relative to component (i);
- (b) about 15 to 30% of a dimer/trimer acid;
- (c) about 1 to 10% of a nonionic surfactant;
- (d) about 25 to 75% of a hydrocarbon solvent;
- and
- (e) about 0 to 5% of an alcohol.
A composition comprising
- (a) about 15 to 30% of a corrosion inhibitor composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1-epoxyalkane having from 12 to 30 carbon atoms and ammonia, in the presence of an amination catalyst and hydrogen;
- (b) about 15 to 30% of a dimer/trimer acid;
- (c) about 1 to 10% of a nonionic surfactant;
- (d) about 25 to 75% of a hydrocarbon solvent;
- and
- (e) about 0 to 5% of an alcohol.
A composition comprising
- (a) about 15 to 30% of a corrosion inhibitor composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1,2-dihaloalkane having from 12 to 30 carbon atoms and ammonia;
- (b) about 15 to 30% of a dimer/trimer acid;
- (c) about 1 to 10% of a nonionic surfactant;
- (d) about 25 to 75% of a hydrocarbon solvent;
- and
- (e) about 0 to 5% of an alcohol.
A composition comprising
- (a) about 15 to 30% of a corrosion inhibitor composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1,2-dihaloalkane having from 12 to 30 carbon atoms and ammonia and wherein the 1,2-dihaloalkane and ammonia are reacted with about 1 to 50 weight percent of ethylene diamine, a higher polyethylenepolyamine or ethylene dichloride to form the polyalkylenepolyamine product;
- (b) about 15 to 30% of a dimer/trimer acid;
- (c) about 1 to 10% of a nonionic surfactant;
- (d) about 25 to 75% of a hydrocarbon solvent;
- and
- (e) about 0 to 5% of an alcohol.
A composition comprising
- (a) about 15 to 30% of a corrosion inhibitor composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1-epoxyalkane having from 12 to 30 carbon atoms and ammonia, in the presence of an amination catalyst and hydrogen, and wherein the 1-epoxyalkane and ammonia are reacted with about 1 to 50 weight percent of ethylene diamine or a higher polyethylenepolyamine to form the polyalkylenepolyamine product;
- (b) about 15 to 30% of a dimer/trimer acid;
- (c) about 1 to 10% of a nonionic surfactant;
- (d) about 25 to 75% of a hydrocarbon solvent;
- and
- (e) about 0 to 5% of an alcohol.
Dependencies are inferred from the claim text.