Patent US3857791A successfully refreshed from Google Patents.
US3857791A
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Lubricating oil additive and lubricating oil compositions containing same
Assignee: Citgo Petroleum Corp
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Filing: 1972-05-25
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Granted: 1974-12-31
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Expires: 1992-05-25
Abstract
Abstract An improved lubricating oil additive having, among other desirable properties, detergency and superior rust inhibitory characteristics and lubricating oil compositions containing said additive. The additive is a two component mixture comprising a high molecular weight amido-amine and a high molecular weight hydrocarbylamine. The preferred lubricating oil composition is a two-cycle engine oil composition comprising a major proportion of a hydrocarbon lubricating oil and a minor proportion of the two component additive of the invention.
Inventors
- 👤 A Marcellis
- 👤 D Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:20
CPC Classifications
C; C10; C10M; C10M133/00; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10N; C10N2040/00; C10N2040/25; C10N2040/255; C10N2040/26; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
171 words
A LUBRICATING OIL ADDITIVE COMPRISING A MIXTURE OF AN AMIDO-AMINE AND A HYDROCARBYLAMINE IN WHICH, A. THE AMIDO-AMINE/HYDROCARBYLAMINE VOLUME RATIO VARIES FROM ABOUT 1/10 TO ABOUT 10/1, B. THE AMIDO-AMINE IS THE CONDENSATION PRODUCT OF AN ALKYLENEPOLYAMINE CONTAINING ABOUT 2-6 AMINO NITROGENS AND 2-16 CARBON ATOMS AND LESS THAN THE STOICHIOMETRIC AMOUNT OF A FATTY MONOCARBOXYLIC CONTAINING ABOUT 14-20 CARBON ATOMS, THE MOLE RATIO OF SAID ALKYLENEPOLYAMINE TO SAID FATTY MONOCARBOXYLIC ACID BEINF FROM ABOUT 1:1 TO ABOUT 1:5, AND C. THE HYDROCARBYLAMINE HAS A MOLECULAR WEIGHT FROM ABOUT 450 TO ABOUT 5000 AND IS SELECTED FROM THE GROUP CONSISTING OF BRANCHED CHAIM ALIPHATIC HYDROCARBON MONOAMINES AND ALKYLENEPOLYAMINES, AND WHEREIN THE ALKYLENEPOLYAMINE HAS THE EMPIRICAL FORMULA FFIG-01 WHEREIN R'' = A BRANCHED CHAIN ALIPHATIC HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF POLYPROPYLENE AND POLYISOBUTYLENE AND HAVING AN AVERAGE MOLECULAR WEIGHT RANGING FROM ABOUT 450 TO ABOUT 15000 A = AN INTEGER HAVING THE VALUE OF 1 OR 2, B = AN INTEGER HAVING THE VALUE OF FROM 1 TO ABOUT 5.
Claim 2
Dependent Claim
171 words
A LUBRICATING OIL ADDITIVE COMPRISING A MIXTURE OF AN AMIDO-AMINE AND A HYDROCARBYLAMINE IN WHICH, A. THE AMIDO-AMINE/HYDROCARBYLAMINE VOLUME RATIO VARIES FROM ABOUT 1/10 TO ABOUT 10/1, B. THE AMIDO-AMINE IS THE CONDENSATION PRODUCT OF AN ALKYLENEPOLYAMINE CONTAINING ABOUT 2-6 AMINO NITROGENS AND 2-16 CARBON ATOMS AND LESS THAN THE STOICHIOMETRIC AMOUNT OF A FATTY MONOCARBOXYLIC CONTAINING ABOUT 14-20 CARBON ATOMS, THE MOLE RATIO OF SAID ALKYLENEPOLYAMINE TO SAID FATTY MONOCARBOXYLIC ACID BEINF FROM ABOUT 1:1 TO ABOUT 1:5, AND C. THE HYDROCARBYLAMINE HAS A MOLECULAR WEIGHT FROM ABOUT 450 TO ABOUT 5000 AND IS SELECTED FROM THE GROUP CONSISTING OF BRANCHED CHAIM ALIPHATIC HYDROCARBON MONOAMINES AND ALKYLENEPOLYAMINES, AND WHEREIN THE ALKYLENEPOLYAMINE HAS THE EMPIRICAL FORMULA FFIG-01 WHEREIN R'' = A BRANCHED CHAIN ALIPHATIC HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF POLYPROPYLENE AND POLYISOBUTYLENE AND HAVING AN AVERAGE MOLECULAR WEIGHT RANGING FROM ABOUT 450 TO ABOUT 15000 A = AN INTEGER HAVING THE VALUE OF 1 OR 2, B = AN INTEGER HAVING THE VALUE OF FROM 1 TO ABOUT 5.
Claim 3
Dependent Claim
38 words
The lubricating oil additive of claim 1 wherein the amido-amine is the condensation product of 1 mole of tetraethylenepentamine and about 3 moles of a mixture of branched and straight chain fatty monocarboxylic acids containing about 14-20 carbons.
Claim 4
Dependent Claim
24 words
The lubricating oil additive of claim 1 wherein the volume ratio of said amido-amine to said alkylenepolyamine is from about 1:3 to about 3:1.
Claim 5
Dependent Claim
21 words
The lubricating oil additive of claim 2 wherein the volume ratio of said amido-amine to said alkylenepolyamine is about 1: 0.7.
Claim 6
Dependent Claim
25 words
A hydrocarbon lubricating oil composition comprising a major proportion of a hydrocarbon lubricating oil and about 1-30 volume percent of the additive of claim 1.
Claim 7
Dependent Claim
25 words
A hydrocarbon lubricating oil composition comprising a major proportion of a hydrocarbon lubricating oil and about 2-20 volume percent of the additive of claim 3.
Claim 8
Dependent Claim
25 words
A two-cycle engine oil composition comprising a major proportion of a hydrocarbon lubricating oil and about 4-12 volume percent of the additive of claim 4.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |