US3907704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrogen-containing compositions useful as rust inhibitors in fuels and lubricants
Assignee: Lubrizol Corp
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Filing: 1973-04-25
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Granted: 1975-09-23
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Expires: 1993-04-25
Abstract
Abstract This invention is directed to a nitrogen-containing composition and more specifically to a process for preparing a nitrogencontaining composition particularly useful as a rust-inhibitor for lubricants and fuels. The nitrogen-containing composition is prepared by reacting effective amounts of at least one alkylene amine with formic acid or a formic acid-producing compound at a temperature of at least about 25*C.
Inventors
- 👤 John P Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:35
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10M; C10M133/00; C10L1/222; C10L1/2222; C10L1/224; C10L1/228; C10L1/2283; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2207/00; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2211/00; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/028; C10M2217/04; C10M2217/044; C10M2217/045; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/02; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/02; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/20; C10N2040/25; C10N2040/255; C10N2040/26; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
38 words
A NITROGEN-CONTAINING COMPOSITION FOR INHIBITING RUST IN LUBRICANT AND FUELS PREPARED BY REACTING AT A TEMPERATURE OF AT LEAST ABOUT 25*C. APPROXIMAITELY 0.5 AND LESS THAN 3.0 EQUIV ALENTS OF AT LEAST ONE ALKYLENE AMINE OF THE FORMULA
Claim 2
Dependent Claim
38 words
A NITROGEN-CONTAINING COMPOSITION FOR INHIBITING RUST IN LUBRICANT AND FUELS PREPARED BY REACTING AT A TEMPERATURE OF AT LEAST ABOUT 25*C. APPROXIMAITELY 0.5 AND LESS THAN 3.0 EQUIV ALENTS OF AT LEAST ONE ALKYLENE AMINE OF THE FORMULA
Claim 3
Dependent Claim
17 words
The nitrogen-containing composition of claim 1 further characterized in that the temperature is at least about 100*C.
Claim 4
Dependent Claim
19 words
The nitrogen-containing composition of claim 1 further characterized in that the temperature ranges from about 25* to about 300*C.
Claim 5
Dependent Claim
19 words
The nitrogen-containing composition of claim 3 further characterized in that the temperature ranges from about 25*10 to about 120*C.
Claim 6
Dependent Claim
18 words
The nitrogen-containing composition of claim 1 further characterized in that the alkylene amine is reacted with formic acid.
Claim 7
Dependent Claim
38 words
The nitrogen-containing composition of claim 1 further characterized in that the alkylene amine is reacted with formic acid-producing compound selected from the class consisting of salts of formic acid, esters of formic acid and amides of formic acid.
Claim 8
Dependent Claim
34 words
The nitrogen-containing composition of claim 6 further characterized in that the alkylene amine is reacted with a salt of formic acid made from ammonia or an alkyl amine of 1 to 12 carbon atoms.
Claim 9
Dependent Claim
25 words
The nitrogen-containing composition of claim 6 further characterized in that the salt is an amine salt of formic Acid having 1 to 8 carbon atoms.
Claim 10
Dependent Claim
32 words
The nitrogen-containing composition of claim 6 further characterized in that the alkylene amine is reacted with an ester of formic acid made from an aliphatic alcohol having 1 to 12 carbon atoms.
Claim 11
Dependent Claim
25 words
The nitrogen-containing composition of claim 9 further characterized in that the ester of formic acid is of an alcohol having 1 to 8 carbon atoms.
Claim 12
Dependent Claim
24 words
The nitrogen-containing composition of claim 6 further characterized in that the alkylene amine is reacted with a low molecular weight amide of formic acid.
Claim 13
Dependent Claim
19 words
The nitrogen-containing composition of claim 10 further characterized in that the ester is a methyl ester of formic acid.
Claim 14
Dependent Claim
16 words
The nitrogen-containing composition of claim 11 further characterized in that the amide is an alkyl formamide.
Claim 15
Dependent Claim
24 words
The nitrogen-containing composition of claim 13 further characterized in that the alkyl formamide has an alkyl group of 1 to 8 aliphatic carbon atoms.
Claim 16
Dependent Claim
15 words
The nitrogen-containing composition of claim 1 further characterized in that the alkylene radical is ethylene.
Claim 17
Dependent Claim
19 words
The nitrogen-containing composition of claim 1 further characterized in that the alkylene amine comprises a mixture of alkylene polyamines.
Claim 18
Dependent Claim
19 words
The nitrogen-containing composition of claim 1 further characterized in that the alkylene radical has 2 to 8 carbon atoms.
References Cited (Backward Citations)
US1926015A
Cited
US2453057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |