Patent US4499006A successfully refreshed from Google Patents.
US4499006A
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Corrosion inhibitors
Assignee: Texaco Inc
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Filing: 1983-06-06
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Granted: 1985-02-12
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Expires: 2003-06-06
Abstract
Abstract A series of novel water-dispersible corrosion inhibiting solutions are disclosed which contain a composition which includes the reaction product of an amine mixture and an organic monomer acid mixture. A process for the inhibition of corrosion in aqueous environment is also disclosed. The process is particularly useful for protecting metal surfaces in subterranean petroleum pumping wells.
Inventors
- 👤 Frederick W. Valone
- 👤 Joseph Rutledge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:13
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/54; C23; C23F; C23F11/00; C23F11/08; C23F11/10; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
74 words
A corrosion inhibition solution comprising: A. water, and B. 10 ppm to 1,000 ppm of a composition comprising the reaction product of: 1. an amine mixture comprising: a 0.8:1 to 1:0.8 mixture of a poly(oxyethylene)diamine of molecular weight from 500 to 700 and a poly(oxypropylene)triamine of molecular weight from 300 to 500, and 2. an organic monomer acid mixture comprising: a 0.8:1 to 1:0.8 mixture of a petroleum wax oxidate and a fatty acid.
Claim 2
Dependent Claim
74 words
A corrosion inhibition solution comprising: A. water, and B. 10 ppm to 1,000 ppm of a composition comprising the reaction product of: 1. an amine mixture comprising: a 0.8:1 to 1:0.8 mixture of a poly(oxyethylene)diamine of molecular weight from 500 to 700 and a poly(oxypropylene)triamine of molecular weight from 300 to 500, and 2. an organic monomer acid mixture comprising: a 0.8:1 to 1:0.8 mixture of a petroleum wax oxidate and a fatty acid.
Claim 3
Dependent Claim
9 words
The solution of claim 1 which additionally comprises brine.
Claim 4
Dependent Claim
17 words
The solution of claim 1 which comprises from 25 ppm to 250 ppm of the reaction product.
Claim 5
Dependent Claim
24 words
The solution of claim 1 wherein in the composition the amine mixture is from 40% to 60% in molar excess of the acid mixture.
Claim 6
Dependent Claim
40 words
The solution of claim 1 wherein in the amine mixture the poly(oxyethylene)diamine is of the general formula: ##STR12## wherein b averages 13.5 and a+c averages 3.5 and wherein the poly(oxypropylene)triamine is of the general formula: ##STR13## wherein x+y+z averages 5.3.
Claim 7
Dependent Claim
47 words
The solution of claim 1 wherein in the organic monomer acid mixture the petroleum wax oxidate is a mixture of mono carboxylic acids of 4 to 25 carbon atom paraffins and wherein the fatty acid is a mixture of C 16 to C 18 monomer fatty acids.
Claim 8
Dependent Claim
10 words
The solution of claim 1 which additionally comprises a surfactant.
Claim 9
Dependent Claim
61 words
A process of protecting metals from corrosion in aqueous environment which comprises contacting the metal with an effective amount of a composition comprising the reaction product of: 1. an amine mixture comprising: a 0.8:1 to 1:0.8 mixture of a poly(oxyethylene)diamine of the general formula: ##STR14## wherein b averages 13.5 and a+c averages 3.5, and a poly(oxypropylene)triamine of the general formula: ##STR15##
Claim 10
Dependent Claim
61 words
A process of protecting metals from corrosion in aqueous environment which comprises contacting the metal with an effective amount of a composition comprising the reaction product of: 1. an amine mixture comprising: a 0.8:1 to 1:0.8 mixture of a poly(oxyethylene)diamine of the general formula: ##STR14## wherein b averages 13.5 and a+c averages 3.5, and a poly(oxypropylene)triamine of the general formula: ##STR15##
Claim 11
Dependent Claim
64 words
an organic monomer acid mixture comprising: a 0.8:1 to 1:0.8 mixture of a petroleum wax oxidate which is a mixture of mono carboxylic acids of 4 to 25 carbon atom paraffins, and a fatty acid which is a mixture of C 16 to C 18 monomer fatty acids; and wherein the amine mixture is 40% to 60% in molar excess of the acid mixture.
Claim 12
Dependent Claim
64 words
an organic monomer acid mixture comprising: a 0.8:1 to 1:0.8 mixture of a petroleum wax oxidate which is a mixture of mono carboxylic acids of 4 to 25 carbon atom paraffins, and a fatty acid which is a mixture of C 16 to C 18 monomer fatty acids; and wherein the amine mixture is 40% to 60% in molar excess of the acid mixture.
Claim 13
Dependent Claim
13 words
The process of claim 8 where contacting is accomplished in a continuous process.
Claim 14
Dependent Claim
60 words
A corrosion inhibition solution comprising: A. water, and B. 10 ppm to 1,000 ppm of a composition comprising the neutralized reaction product of: 1. an amine mixture comprising: a 0.8:1 to 1:0.8 mixture of a poly(oxyethylene)diamine of molecular weight from 500 to 700 and an alkyl propylene diamine selected from the group consisting of N-coco-1,3-diaminopropane, N-soya-1,3-diaminopropane, N-tallow-1,3-diaminopropane, and N-oleyl-1,3-diaminopropane; and
Claim 15
Dependent Claim
60 words
A corrosion inhibition solution comprising: A. water, and B. 10 ppm to 1,000 ppm of a composition comprising the neutralized reaction product of: 1. an amine mixture comprising: a 0.8:1 to 1:0.8 mixture of a poly(oxyethylene)diamine of molecular weight from 500 to 700 and an alkyl propylene diamine selected from the group consisting of N-coco-1,3-diaminopropane, N-soya-1,3-diaminopropane, N-tallow-1,3-diaminopropane, and N-oleyl-1,3-diaminopropane; and
Claim 16
Dependent Claim
20 words
an organic monomer acid mixture comprising a 0.8:1 to 1:0.8 mixture of a petroleum wax oxidate and a fatty acid.
Claim 17
Dependent Claim
20 words
an organic monomer acid mixture comprising a 0.8:1 to 1:0.8 mixture of a petroleum wax oxidate and a fatty acid.
Claim 18
Dependent Claim
9 words
The solution of claim 10 which additionally comprises brine.
Claim 19
Dependent Claim
17 words
The solution of claim 10 which comprises from 25 ppm to 250 ppm of the reaction product.
Claim 20
Dependent Claim
24 words
The solution of claim 10 wherein in the composition the amine mixture is from 40% to 60% in molar excess of the acid mixture.
Claim 21
Dependent Claim
40 words
The solution of claim 10 wherein in the amine mixture the poly(oxyethylene)diamine is of the general formula: ##STR16## wherein b averages 13.5 and a+c averages 3.5 and wherein the poly(oxypropylene)triamine is of the general formula: ##STR17## wherein x+y+z averages 5.3.
Claim 22
Dependent Claim
16 words
The solution of claim 10 wherein in the amine mixture the alkyl propylene diamine is N-coco-1,3-diaminopropane.
Claim 23
Dependent Claim
47 words
The solution of claim 10 wherein in the organic monomer acid mixture the petroleum wax oxidate is a mixture of mono carboxylic acids of 4 to 25 carbon atom paraffins and wherein the fatty acids is a mixture of C 16 to C 18 monomer fatty acids.
Claim 24
Dependent Claim
10 words
The solution of claim 10 which additionally comprises a surfactant.
Claim 25
Dependent Claim
71 words
A process of protecting metals from corrosion in aqueous environment which comprises contacting the metal with an effective amount of a composition comprising the neutralized reaction product of: 1. an amine mixture comprising: a 0.8:1 to 1:0.8 mixture of a poly(oxyethylene)diamine of the general formula: ##STR18## wherein b averages 13.5 and a+c averages 3.5, and an alkyl propylene diamine selected from the group consisting of N-coco-1,3-diaminopropane, N-soya-1,3-diaminopropane, N-tallow-1,3-diaminopropane, and N-oleyl-1,3-diaminopropane; and
Claim 26
Dependent Claim
71 words
A process of protecting metals from corrosion in aqueous environment which comprises contacting the metal with an effective amount of a composition comprising the neutralized reaction product of: 1. an amine mixture comprising: a 0.8:1 to 1:0.8 mixture of a poly(oxyethylene)diamine of the general formula: ##STR18## wherein b averages 13.5 and a+c averages 3.5, and an alkyl propylene diamine selected from the group consisting of N-coco-1,3-diaminopropane, N-soya-1,3-diaminopropane, N-tallow-1,3-diaminopropane, and N-oleyl-1,3-diaminopropane; and
Claim 27
Dependent Claim
65 words
an organic monomer acid mixture comprising a 0.8:1 to 1:0.8 mixture of a petroleum wax oxidate which is a mixture consisting of mono carboxylic acids of 4 to 25 carbon atom paraffins, and a fatty acid which is a mixture of C 16 to C 18 monomer fatty acids; and wherein the amine mixture is 40% to 60% in molar excess of the acid mixture.
Claim 28
Dependent Claim
65 words
an organic monomer acid mixture comprising a 0.8:1 to 1:0.8 mixture of a petroleum wax oxidate which is a mixture consisting of mono carboxylic acids of 4 to 25 carbon atom paraffins, and a fatty acid which is a mixture of C 16 to C 18 monomer fatty acids; and wherein the amine mixture is 40% to 60% in molar excess of the acid mixture.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |