US4900458A
Expired / Lapsed
US
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Polyalkylenepolyamines as corrosion inhibitors
Assignee: Chevron USA Inc
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Filing: 1988-01-11
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Granted: 1990-02-13
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Expires: 2008-01-11
Abstract
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.
Inventors
- 👤 Albert H. Schroeder
- 👤 Ta Y. Ching
- 👤 Shigeto Suzuki
- 👤 Kiyoshi Katsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:13
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
62 words
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).
Claim 2
Dependent Claim
62 words
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).
Claim 3
Dependent Claim
20 words
The composition according to claim 1, wherein the composition contains greater than 5% of component (b), relative to component (a).
Claim 4
Dependent Claim
25 words
The composition according to claim 1, wherein the ratio of component (b) to component (a) is in the range of about 0.05:1 to about 20:1.
Claim 5
Dependent Claim
18 words
The composition according to claim 1, wherein each C-alkyl group independently contains from 14 to 22 carbon atoms.
Claim 6
Dependent Claim
18 words
The composition according to claim 4, wherein each C-alkyl group independently contains from 18 to 22 carbon atoms.
Claim 7
Dependent Claim
22 words
A composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1,2-dihaloalkane having from 12 to 30 carbon atoms and ammonia.
Claim 8
Dependent Claim
22 words
A composition comprising the polyalkylenepolyamine product obtained by the reaction of a 1,2-dihaloalkane having from 12 to 30 carbon atoms and ammonia.
Claim 9
Dependent Claim
11 words
The composition according to claim 6, wherein the 1,2-dihaloalkane is 1,2-dichloroalkane.
Claim 10
Dependent Claim
16 words
The composition according to claim 6, wherein the 1,2-dihaloalkane has from 16 to 24 carbon atoms.
Claim 11
Dependent Claim
16 words
The composition according to claim 8, wherein the 1,2-dihaloalkane has from 20 to 24 carbon atoms.
Claim 12
Dependent Claim
19 words
The composition according to claim 6, wherein the molar ratio of ammonia to 1,2-dihaloalkane is about 2:1 to 100:1.
Claim 13
Dependent Claim
16 words
The composition according to claim 6, wherein the reaction is carried out under substantially anhydrous conditions.
Claim 14
Dependent Claim
21 words
The composition according to claim 6, wherein the reaction is carried out in the presence of an inert polar organic solvent.
Claim 15
Dependent Claim
12 words
The composition according to claim 12, wherein the solvent is an alkanol.
Claim 16
Dependent Claim
34 words
The composition according to claim 6, 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.
Claim 17
Dependent Claim
31 words
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.
Claim 18
Dependent Claim
31 words
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.
Claim 19
Dependent Claim
16 words
The composition according to claim 15, wherein the 1-epoxyalkane has from 16 to 24 carbon atoms.
Claim 20
Dependent Claim
16 words
The composition according to claim 16, wherein the 1-epoxyalkane has from 20 to 24 carbon atoms.
Claim 21
Dependent Claim
19 words
The composition according to claim 15, wherein the molar ratio of ammonia to 1-epoxyalkane is about 2:1 to 100:1.
Claim 22
Dependent Claim
21 words
The composition according to claim 15, wherein the amination catalyst is selected from the group consisting of cobalt-containing and nickel-containing catalysts.
Claim 23
Dependent Claim
15 words
The composition according to claim 19, wherein the amination catalyst is a supported cobalt catalyst.
Claim 24
Dependent Claim
15 words
The composition according to claim 19, wherein the amination catalyst is a supported nickel-rhenium catalyst.
Claim 25
Dependent Claim
32 words
The composition according to claim 15, 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.
Claim 26
Independent Claim
85 words
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).
Claim 27
Independent Claim
85 words
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).
Claim 28
Dependent Claim
18 words
The method according to claim 23, wherein each C-alkyl group independently contains from 14 to 22 carbon atoms.
Claim 29
Dependent Claim
18 words
The method according to claim 24, wherein each C-alkyl group independently contains from 18 to 22 carbon atoms.
Claim 30
Dependent Claim
21 words
The method according to claim 23, wherein the polyalkylenepolyamine composition contains greater than 5% of component (b), relative to component (a).
Claim 31
Dependent Claim
25 words
The method according to claim 23, wherein the ratio of component (b) to component (a) is in the range of about 0.05:1 to about 20:1.
Claim 32
Independent Claim
45 words
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.
Claim 33
Independent Claim
45 words
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.
Claim 34
Independent Claim
53 words
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.
Claim 35
Independent Claim
53 words
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.
Claim 36
Independent Claim
97 words
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).
Claim 37
Independent Claim
97 words
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).
Claim 38
Independent Claim
57 words
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.
Claim 39
Independent Claim
57 words
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.
Claim 40
Independent Claim
65 words
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.
Claim 41
Independent Claim
65 words
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.
Claim 42
Dependent Claim
17 words
A corrosion inhibiting composition comprising the polyalkylenepolyamine composition of claim 1 and one or more dimer/trimer acids.
Claim 43
Dependent Claim
21 words
The corrosion inhibiting composition according to claim 33, further comprising one or more ionic or nonionic surfactants and a hydrocarbon solvent.
Claim 44
Dependent Claim
14 words
The corrosion inhibiting composition according to claim 34, further comprising one or more alcohols.
Claim 45
Dependent Claim
16 words
A corrosion inhibiting composition comprising the composition of claim 6 and one or more dimer/trimer acids.
Claim 46
Dependent Claim
21 words
The corrosion inhibiting composition according to claim 36, further comprising one or more ionic or nonionic surfactants and a hydrocarbon solvent.
Claim 47
Dependent Claim
14 words
The corrosion inhibiting composition according to claim 27, further comprising one or more alcohols.
Claim 48
Dependent Claim
16 words
A corrosion inhibiting composition comprising the composition of claim 15 and one or more dimer/trimer acids.
Claim 49
Dependent Claim
21 words
The corrosion inhibiting composition according to claim 39, further comprising one or more ionic or nonionic surfactants and a hydrocarbon solvent.
Claim 50
Dependent Claim
14 words
The corrosion inhibiting composition according to claim 40, further comprising one or more alcohols.
Claim 51
Dependent Claim
110 words
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.
Claim 52
Dependent Claim
110 words
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.
Claim 53
Dependent Claim
78 words
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.
Claim 54
Dependent Claim
78 words
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.
Claim 55
Dependent Claim
69 words
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.
Claim 56
Dependent Claim
69 words
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.
Claim 57
Dependent Claim
98 words
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.
Claim 58
Dependent Claim
98 words
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.
Claim 59
Dependent Claim
105 words
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.
Claim 60
Dependent Claim
105 words
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.
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