US3676483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersants prepared from polyamines and alkaryl carboxylic acids
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-11-28
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Granted: 1972-07-11
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Expires: 1989-11-28
Abstract
Abstract An oil-soluble additive useful for improving the properties of a fuel oil, a lubricating oil, a heating oil, a gasoline or the like is prepared by heating an aliphatic polyamine or amino alcohol with an alkylated aryl carboxylic acid at a temperature that causes the splitting out of water. The carboxylic acid is prepared by thermal diene addition of an alkylated aromatic hydrocarbon such as paraffin-wax-alkylated naphthalene, or of a ring-substituted hydroxy, amino, or vinyl derivative of such hydrocarbon, with an unsaturated monobasic acid, or with an unsaturated polybasic acid or its anhydride, such as maleic acid, maleic anhydride, acrylic acid, methacrylic acid, or the like. The additive can be modified by treatment with phosphorous acid.
Inventors
- 👤 Shih-En Hu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:20
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/76; C07C59/84; C07C65/00; C07C65/32; C07C65/34; C07D; C07D295/00; C07D295/04; C07D295/12; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10M; C10M133/00; C10M133/02; C10M133/16; C10L1/221; C10L1/222; C10L1/224; C10L1/228; C10L1/2283; C10L1/232; C10L1/26; C10L1/2691; C10M2201/00; C10M2201/06; C10M2201/062; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/027; C10M2207/28; C10M2207/282; C10M2207/32; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
An oil-soluble additive for an oil composition which comprises the product obtained by condensing an aromatic carboxylic acid or its C1 to C3 aliphatic alcohol ester with an aliphatic polyamine or aliphatic amino alcohol under conditions causing the splitting out of water or alcohol of condensation, said aromatic carboxylic acid or ester having been prepared by the diene condensation of an aromatic compound of from about 500 to about 4,000 molecular weight with an unsaturated monocarboxylic acid, polycarboxylic acid or acid anhydride or with a C1 to C3 aliphatic alcohol ester of such acid or anhydride, said acid or anhydride having a total of from three to 10 carbon atoms and characterized by possession of the group: , said aromatic compound being characterized as an aromatic hydrocarbon or a derivative thereof having a hydroxy, amino, or vinyl substituent attached to an aromatic ring, said aromatic compound having an alkyl substituent of from eight to 32 carbon atoms.
Claim 2
Dependent Claim
18 words
Additive as defined by claim 2 wherein said aliphatic amino alcohol has from two to 24 carbon atoms.
Claim 3
Dependent Claim
16 words
Additive as defined by claim 2 wherein said amino alcohol is a hydroxy alkyl alkylene diamine.
Claim 4
Dependent Claim
76 words
Additive as defined by claim 2 wherein said polyamine is selected from the class consisting of N,N-di-(2-amino ethyl) ethylene diamine, an alkylene polyamine having the formula: wherein n is 2 to 3 and m is a number from 0 to 10, and an N-aminoalkyl piperazine of the formula: wherein n is a number 1 to 3 and R is selected from the group consisting of hydrogen and an aminoalkyl radical of 1 to 3 carbon atoms.
Claim 5
Dependent Claim
13 words
Additive as defined by claim 2 wherein said aromatic compound comprises paraffin-wax-Alkylated naphthalene.
Claim 6
Dependent Claim
20 words
Additive as defined by claim 2 wherein said aromatic compound comprises a petrolene fraction from an aliphatic crude petroleum residuum.
Claim 7
Dependent Claim
23 words
Additive as defined by claim 2 wherein said aromatic carboxylic acid is the diene condensation product of paraffin-wax-alkylated naphthalene and maleic acid anhydride.
Claim 8
Dependent Claim
13 words
Additive as defined by claim 2 wherein said aliphatic polyamine is tetraethylene pentamine.
Claim 9
Dependent Claim
15 words
Additive as defined by claim 2 wherein said amino alcohol is N,N,N'',N''-tetrakis (2-hydroxyethyl) ethylene diamine.
Claim 10
Dependent Claim
16 words
Additive as defined by claim 2 which has been further modified by treatment with phosphorous acid.
References Cited (Backward Citations)
US3306856A
Cited
US3526661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |