US4315087A
Expired / Lapsed
US
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Quaternary polyaminoamides
Assignee: Baker Hughes Holdings LLC
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Filing: 1975-04-28
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Granted: 1982-02-09
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Expires: 1995-04-28
Abstract
Abstract This invention relates to quaternary polyaminoamides. The polyaminoamides are prepared by reacting acrylate-type compounds with polyamines as disclosed in U.S. Pat. No. 3,445,441. This invention also relates to uses for the quaternized polymer, particularly in the prevention of corrosion.
Inventors
- 👤 Derek Redmore
- 👤 Benjamin T. Outlaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:17
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/173; C08; C08G; C08G69/00; C08G73/00; C08G73/02; C08G73/028; C08G73/0293; C09; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/035; C09K8/54; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
Quaternaries of polymers of the general unit formula ##STR23## where R is hydrogen or methyl, R' is hydrogen, A is a --CH 2 CH 2 -- moiety of a hydrocarbon polyamine which links amino groups and n is an integer; and cross-linked derivatives thereof, where the polyamine is of the general formula ##STR24## wherein the quaternizing agent is selected from the group consisting of benzyl chloride, ethylene dichloride and p-dodecyl benzyl chloride.
Claim 2
Dependent Claim
72 words
Quaternaries of polymers of the general unit formula ##STR23## where R is hydrogen or methyl, R' is hydrogen, A is a --CH 2 CH 2 -- moiety of a hydrocarbon polyamine which links amino groups and n is an integer; and cross-linked derivatives thereof, where the polyamine is of the general formula ##STR24## wherein the quaternizing agent is selected from the group consisting of benzyl chloride, ethylene dichloride and p-dodecyl benzyl chloride.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein the quaternizing agent is benzyl chloride.
Claim 4
Dependent Claim
24 words
A process of inhibiting corrosion in a corrosive-fluid handling system which comprises treating the fluid in the system with the composition of claim 2.
Claim 5
Dependent Claim
9 words
The composition of claim 1 quaternized with ethylene dichloride.
Claim 6
Dependent Claim
10 words
The composition of claim 1 quaternized with p-dodecyl benzyl chloride.
Claim 7
Dependent Claim
132 words
A process of inhibiting corrosion in a corrosive-fluid handling system which is a deep well subject to temperature in excess of 200° F. and pressure in excess of 5,000 psi and exhibiting CO 2 and/or H 2 S partial pressures in excess of 10 psi which comprises treating the fluid in the system with the composition which is a quaternary of a polymer of the general unit formula ##STR25## where R is hydrogen or methyl, R' is hydrogen, A is a --CH 2 CH 2 -- moiety of a hydrocarbon polyamine which links amino groups and n is an integer; and cross-linked derivatives thereof, where the polyamine is of the general formula ##STR26## wherein the quaternizing agent is selected from the group consisting of benzyl chloride, ethylene dichloride and p-dodecyl benzyl chloride.
Claim 8
Dependent Claim
132 words
A process of inhibiting corrosion in a corrosive-fluid handling system which is a deep well subject to temperature in excess of 200° F. and pressure in excess of 5,000 psi and exhibiting CO 2 and/or H 2 S partial pressures in excess of 10 psi which comprises treating the fluid in the system with the composition which is a quaternary of a polymer of the general unit formula ##STR25## where R is hydrogen or methyl, R' is hydrogen, A is a --CH 2 CH 2 -- moiety of a hydrocarbon polyamine which links amino groups and n is an integer; and cross-linked derivatives thereof, where the polyamine is of the general formula ##STR26## wherein the quaternizing agent is selected from the group consisting of benzyl chloride, ethylene dichloride and p-dodecyl benzyl chloride.
Claim 9
Dependent Claim
12 words
The process of claim 6 where the quaternizing agent is benzyl chloride.
Claim 10
Dependent Claim
12 words
The process of claim 6 wherein the quaternizing agent is ethylene dichloride.
Claim 11
Dependent Claim
13 words
The process of claim 6 wherein the quaternizing agent is p-dodecyl benzyl chloride.
References Cited (Backward Citations)
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Cited
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US2824861A
Cited
US3445441A
Cited
US3530215A
Cited
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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) | 1985-02-08 | 1985-08-10 | 1986-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-08 | 1989-08-10 | 1990-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-08 | 1993-08-10 | 1994-02-09 | $7700.00 | Window Closed / Lapsed |