US4344861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-amides as corrosion inhibitors
Assignee: Honeywell UOP LLC
•
Filing: 1980-01-15
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Granted: 1982-08-17
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Expires: 2000-01-15
Abstract
Abstract A method of inhibiting the corrosion of metals in contact with petroleum and petroleum fractions other than gasoline comprises contacting metal surfaces with a corrosion inhibiting amount of bis-amides resulting from reaction of one mole of amine with one equivalent of a dicarboxylic acid.
Inventors
- 👤 Joseph Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:07
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C10G; C10G49/00; C10G49/005; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
53 words
A method of inhibiting corrosion of metals in contact with petroleum and petroleum fractions other than gasoline comprising contacting surfaces of said metals with a corrosion inhibiting amount of a corrosion inhibitor consisting of the reaction product of about one mole ratio of an amine with about one equivalent of a dicarboxylic acid.
Claim 2
Independent Claim
53 words
A method of inhibiting corrosion of metals in contact with petroleum and petroleum fractions other than gasoline comprising contacting surfaces of said metals with a corrosion inhibiting amount of a corrosion inhibitor consisting of the reaction product of about one mole ratio of an amine with about one equivalent of a dicarboxylic acid.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said amine is selected from the group consisting of alkyl and alkenyl monoamines containing from about 5 to about 25 carbon atoms.
Claim 4
Dependent Claim
21 words
The method of claim 2 wherein said amine bears a substituent selected from the group consisting of hydroxy and alkoxy moieties.
Claim 5
Dependent Claim
25 words
The method of claim 1 wherein said amine is a cycloalkyl monoamine, wherein said cycloalkyl group contains from about 5 to about 10 carbon atoms.
Claim 6
Dependent Claim
10 words
The method of claim 1 wherein said amine is phenothiazene.
Claim 7
Dependent Claim
46 words
The method of claim 1 wherein said amine is selected from the group consisting of alkyl and alkenyl alkylenediamines, wherein said alkylene diamine contains from 2 to about 10 carbon atoms, and said alkyl and alkenyl moieties contain from about 5 to about 25 carbon atoms.
Claim 8
Dependent Claim
22 words
The method of claim 6 wherein said alkyl group bears a substituent selected from the group consisting of hydroxyl and alkoxyl moieties.
Claim 9
Dependent Claim
22 words
The method of claim 1 wherein said dicarboxylic acid is an alkylene dicarboxylic acid containing from 2 to about 12 carbon atoms.
Claim 10
Dependent Claim
30 words
The method of claim 8 wherein said alkylene group bears a moiety selected from the group consisting of alkyl and alkenyl moieties containing from 1 to about 10 carbon atoms.
Claim 11
Dependent Claim
27 words
The method of claim 8 wherein said dicarboxylic acid is the dimer of an unsaturated monocarboxylic fatty acid containing from about 16 to about 20 carbon atoms.
Claim 12
Dependent Claim
38 words
The method of claim 1 wherein said amine is selected from the group consisting of oleylamine, N-oleyl-1,3-propylenediamine, tallow amine, and N-tallow-1,3-propylenediamine and said carboxylic acid is the dimer of an unsaturated monocarboxylic fatty acid containing 18 carbon atoms.
Claim 13
Dependent Claim
17 words
The method of claim 1 wherein said amine is a mixture consisting of at least 2 amines.
Claim 14
Dependent Claim
45 words
A composition comprising a major amount of a hydrocarbonaceous material other than gasoline and a minor amount, sufficient to impart corrosion inhibiting properties, of a corrosion inhibitor consisting of the reaction product of one mole of an amine with one equivalent of a dicarboxylic acid.
Claim 15
Dependent Claim
45 words
A composition comprising a major amount of a hydrocarbonaceous material other than gasoline and a minor amount, sufficient to impart corrosion inhibiting properties, of a corrosion inhibitor consisting of the reaction product of one mole of an amine with one equivalent of a dicarboxylic acid.
Claim 16
Dependent Claim
28 words
The composition of claim 13 wherein said amine is selected from the group consisting of alkyl and alkenyl monoamines containing from about 5 to about 25 carbon atoms.
Claim 17
Dependent Claim
21 words
The composition of claim 14 wherein said amine bears a substituent selected from the group consisting of hydroxy and alkoxy moieties.
Claim 18
Dependent Claim
25 words
The composition of claim 13 wherein said amine is a cycloalkyl monoamine wherein said cycloalkyl group contains from about 5 to about 10 carbon atoms.
Claim 19
Dependent Claim
10 words
The composition of claim 13 wherein said amine is phenothiazine.
Claim 20
Dependent Claim
46 words
The composition of claim 13 wherein said amine is selected from the group consisting of alkyl and alkenyl alkylenediamines, wherein said alkylene diamine contains from 2 to about 10 carbon atoms, and said alkyl and alkenyl moieties contain from about 5 to about 25 carbon atoms.
Claim 21
Dependent Claim
22 words
The composition of claim 18 wherein said alkyl group bears a substituent selected from the group consisting of hydroxyl and alkoxyl moieties.
Claim 22
Dependent Claim
22 words
The composition of claim 13 wherein said dicarboxylic acid is an alkylene dicarboxylic acid containing from 2 to about 12 carbon atoms.
Claim 23
Dependent Claim
30 words
The composition of claim 20 wherein said alkylene group bears a moiety selected from the group consisting of alkyl and alkenyl moieties containing from 1 to about 10 carbon atoms.
Claim 24
Dependent Claim
27 words
The composition of claim 20 wherein said dicarboxylic acid is the dimer of an unsaturated monocarboxylic fatty acid containing from about 16 to about 20 carbon atoms.
Claim 25
Dependent Claim
38 words
The composition of claim 13 wherein said amine is selected from the group consisting of oleylamine, N-oleyl-1,3-propylenediamine, tallow amine, and N-tallow-1,3-propylenediamine and said dicarboxylic acid is the dimer of an unsaturated monocarboxylic fatty acid containing 18 carbon atoms.
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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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |