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Patent US4168292A successfully refreshed from Google Patents.
US4168292A
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Acylated hydroxyalkylaminoalkylamides and preparation thereof and uses thereof as corrosion inhibitors
Assignee: Baker Petrolite LLC
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Filing: 1977-10-26
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Granted: 1979-09-18
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Expires: 1997-10-26
Abstract
Abstract Acylated hydroxyalkylaminoalkylamides, the N-alkylated derivatives thereof, and the preparation thereof and uses thereof as corrosion inhibitors.
Inventors
- 👤 Derek Redmore
- 👤 Benjamin T. Outlaw
- 👤 Delbert C. Scranton, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:39
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
74 words
An acylated hydroxyalkylaminoalkylamide, said hydroxyalkylaminoalkylamide being prepared by reacting about 1 mole of an α,β-ethylenically unsaturated nitrile with about 3 moles of an alkanolamine so that one mole of said alkanolamine reacts at the ethylenic bond to form an N-alkanol group and the other 2 moles react with the nitrile group to form a hydroxyalkylaminoalkylamide group, and said acylated hydroxyalkylaminoalkylamide being prepared by reacting said hydroxyalkylaminoalkylamide with a carboxylic acid or carboxylic acid precursor.
Claim 2
Dependent Claim
74 words
An acylated hydroxyalkylaminoalkylamide, said hydroxyalkylaminoalkylamide being prepared by reacting about 1 mole of an α,β-ethylenically unsaturated nitrile with about 3 moles of an alkanolamine so that one mole of said alkanolamine reacts at the ethylenic bond to form an N-alkanol group and the other 2 moles react with the nitrile group to form a hydroxyalkylaminoalkylamide group, and said acylated hydroxyalkylaminoalkylamide being prepared by reacting said hydroxyalkylaminoalkylamide with a carboxylic acid or carboxylic acid precursor.
Claim 3
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 1.
Claim 4
Dependent Claim
20 words
The acylated hydroxyalkylaminoalkylamide of claim 1, wherein said carboxylic acid has more than six and less than 40 carbon atoms.
Claim 5
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 3.
Claim 6
Dependent Claim
15 words
The acylated hydroxyalkylaminoalkylamide of claim 1, wherein said carboxylic acid is a detergent forming acid.
Claim 7
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 5.
Claim 8
Dependent Claim
27 words
The acylated hydroxyalkylaminoalkylamide of claim 1, wherein said α,β-ethylenically unsaturated nitrile has the formula ##STR19## where R' and R" are hydrogen, alkyl, aryl, cycloalkyl, alkaryl or aralkyl.
Claim 9
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 7.
Claim 10
Dependent Claim
13 words
The acylated hydroxyalkylaminoalkylamide of claim 1 where the unsaturated nitrile is an arylnitrile.
Claim 11
Dependent Claim
11 words
The acylated hydroxyalkylaminoalkylamide of claim 9 where the arylnitrile is φCH═CH--CN.
Claim 12
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 9.
Claim 13
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 10.
Claim 14
Dependent Claim
17 words
The acylated hydroxyalkylaminoalkylamide of claim 1 where the unsaturated nitrile is an acrylonitrile or a substituted acrylonitrile.
Claim 15
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 13.
Claim 16
Dependent Claim
12 words
The acylated hydroxyalkylaminoalkylamide of claim 13 where the unsaturated nitrile is acrylonitrile.
Claim 17
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comrises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 15.
Claim 18
Dependent Claim
15 words
Acylated hydroxyalkylaminoalkylamide of claim 15 where the hydroxyalkylaminoalkylamide subjected to acylation has the formula ##STR20##
Claim 19
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 17.
Claim 20
Dependent Claim
15 words
Acylated hydroxyalkylaminoalkylamide of claim 15 where the hydroxyalkylaminoalkylamide subjected to acylation has the formula ##STR21##
Claim 21
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoamide of claim 19.
Claim 22
Dependent Claim
46 words
An acylated hydroxyalkylaminoalkylamide, prepared by reacting a hydroxyalkylaminoalkylamide having the formula ##STR22## where R 1 is alkyl, alkylene, aryl, aralkyl or a lower alkyl substituted group, R 2 is hydrogen or a substituted group and A is alkylene, with a carboxylic acid or carboxylic acid precursor.
Claim 23
Dependent Claim
46 words
An acylated hydroxyalkylaminoalkylamide, prepared by reacting a hydroxyalkylaminoalkylamide having the formula ##STR22## where R 1 is alkyl, alkylene, aryl, aralkyl or a lower alkyl substituted group, R 2 is hydrogen or a substituted group and A is alkylene, with a carboxylic acid or carboxylic acid precursor.
Claim 24
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 21.
Claim 25
Dependent Claim
20 words
The acylated hydroxyalkylaminoalkylamide of claim 21, wherein said carboxylic acid has more than six and less than 40 carbon atoms.
Claim 26
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 23.
Claim 27
Dependent Claim
15 words
The acylated hydroxyalkylaminoalkylamide of claim 21, wherein said carboxylic acid is a detergent forming acid.
Claim 28
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 25.
Claim 29
Dependent Claim
11 words
The acylated hydroxyalkylaminoalkylamide of claim 21 where R 1 is aryl.
Claim 30
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 27.
Claim 31
Dependent Claim
11 words
The acylated hydroxyalkylaminoalkylamide of claim 27 where R 1 is phenyl.
Claim 32
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 29.
Claim 33
Dependent Claim
15 words
Acylated hydroxyalkylaminoalkylamide of claim 29 where the hydroxyalkylaminoalkylamide subjected to acylation has the formula ##STR23##
Claim 34
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 31.
Claim 35
Dependent Claim
15 words
Acylated hydroxyalkylaminoalkylamide of claim 29 where the hydroxyalkylaminoalkylamide subjected to acylation has the formula ##STR24##
Claim 36
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 33.
Claim 37
Dependent Claim
15 words
Acylated hydroxyalkylaminoalkylamide of claim 29 where the hydroxyalkylaminoalkylamide subjected to acylation has the formula ##STR25##
Claim 38
Dependent Claim
32 words
A process of inhibiting corrosion of metals and metal alloys which comprises adding to a system containing a corrosive liquid medium a corrosion inhibiting amount of an acylated hydroxyalkylaminoalkylamide of claim 35.
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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) | 1982-09-17 | 1983-03-19 | 1983-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-17 | 1987-03-19 | 1987-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-17 | 1991-03-19 | 1991-09-18 | $7700.00 | Window Closed / Lapsed |