US4470916A
Expired / Lapsed
US
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High alkalinity metallic detergent-dispersant additives for lubricating oils and method of making same
Assignee: Orogil SA
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Filing: 1983-06-22
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Granted: 1984-09-11
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Expires: 2003-06-22
Abstract
Abstract High alkalinity metallic lubricating oil additives and a method of making them are disclosed. A magnesium alkylbenzenesulfonate and a sulfurized calcium alkylphenate are carbonated in the presence of an oil, magnesium oxide, a glycol, and an amine. The glycol, water, and sediment are then removed from the resulting medium.
Inventors
- 👤 Jean-Louis Le Coent
- 👤 Bernard Demoures
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:33
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24; C10M159/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/028; C10M2207/26; C10M2207/262; C10M2219/00; C10M2219/04; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/089
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
83 words
A method of preparing a lubricating oil additive comprising the steps of: (a) preparing a reaction medium comprising a magnesium alkylbenzenesulfonate having a T.B.N. up to about 20, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil; (b) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising active magnesium oxide, a glycol, and an amine; (c) removing the glycol and the water from the medium; and (d) removing sediment from the medium.
Claim 2
Independent Claim
83 words
A method of preparing a lubricating oil additive comprising the steps of: (a) preparing a reaction medium comprising a magnesium alkylbenzenesulfonate having a T.B.N. up to about 20, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil; (b) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising active magnesium oxide, a glycol, and an amine; (c) removing the glycol and the water from the medium; and (d) removing sediment from the medium.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein carbonation step (b) is carried out at a temperature of from about 90° to about 140° C.
Claim 4
Dependent Claim
51 words
The method of claim 1 wherein in step (b) the milk of magnesia mixture is added in separate portions to the mixture comprising the magnesium alkylbenzenesulfonate, sulfurized calcium alkylphenate, and dilution oil, and wherein each addition of a portion of the milk of magnesia mixture is followed by a carbonation step.
Claim 5
Dependent Claim
36 words
The method of claim 1 wherein in step (b), a quantity of water corresponding to a water to MgO weight ratio of from about 0.1 to about 0.9 is added toward the end of the carbonation.
Claim 6
Dependent Claim
38 words
The method of claim 1 wherein the sulfurized calcium alkylphenate has a lime to alkylphenol molar ratio of from about 0.2 to about 2.5, and a sulfur to alkylphenol molar ratio of from about 1.1 to about 2.2.
Claim 7
Dependent Claim
38 words
The method of claim 1 wherein the sulfurized calcium alkylphenate has a lime to alkylphenol molar ratio of from about 0.4 to about 2, and a sulfur to alkylphenol molar ratio of from about 1.3 to about 1.8.
Claim 8
Dependent Claim
11 words
The method of claim 1 wherein the amine is a polyaminoalkane.
Claim 9
Dependent Claim
10 words
The method of claim 7 wherein the amine is ethylenediamine.
Claim 10
Dependent Claim
11 words
The method of claim 1 wherein the amine is an aminoether.
Claim 11
Dependent Claim
10 words
The method of claim 9 wherein the aminoether is tris(3-oxa-6-aminohexyl)amine.
Claim 12
Dependent Claim
19 words
The method of claim 1 further comprising, after step (a), precarbonating the reaction medium in the presence of glycol.
Claim 13
Independent Claim
95 words
A method of preparing a lubricating oil additive comprising the steps of: (a) preparing a reaction mixture comprising a magnesium alkylbenzenesulfonate having a T.B.N. up to about 20, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil; (b) precarbonating the reaction medium in the presence of glycol and sulfur; (c) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising active magnesium oxide, a glycol, and an amine; (d) removing the glycol and the water from the medium; and (e) removing sediment from the medium.
Claim 14
Independent Claim
95 words
A method of preparing a lubricating oil additive comprising the steps of: (a) preparing a reaction mixture comprising a magnesium alkylbenzenesulfonate having a T.B.N. up to about 20, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil; (b) precarbonating the reaction medium in the presence of glycol and sulfur; (c) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising active magnesium oxide, a glycol, and an amine; (d) removing the glycol and the water from the medium; and (e) removing sediment from the medium.
Claim 15
Dependent Claim
22 words
The method of claim 12 wherein said precarbonation step is performed at a temperature of from about 150° to about 180° C.
Claim 16
Dependent Claim
82 words
The method of claim 12 wherein said precarbonation step is carried out in the presence of a quantity of glycol so as to yield a calcium to glycol molar ratio of from about 0.15 to about 0.77, a quantity of sulfur so as to yield a sulfur to calcium molar ratio of from about 0 to about 1.5, and a quantity of CO 2 so as to yield a CO 2 to calcium molar ratio of from about 0.2 to about 0.8.
Claim 17
Dependent Claim
82 words
The method of claim 14 wherein said precarbonation step is carried out in the presence of a quantity of glycol so as to yield a calcium to glycol molar ratio of from about 0.2 to about 0.6, a quantity of sulfur so as to yield a sulfur to calcium molar ratio of from about 0 to about 1, and a quantity of CO 2 so as to yield a CO 2 to calcium molar ratio of from about 0.4 to about 0.65.
Claim 18
Independent Claim
80 words
A method of preparing an oil additive comprising the steps of: (a) preparing a reaction medium comprising a quantity of magnesium alkylbenzenesulfonate having a T.B.N. up to about 20 so that the ratio of the amount of magnesium alkylbenzenesulfonate, expressed in moles of alkylbenzene sulfonic acid, to the amount of sulfurized calcium alkylphenate, expressed in moles of alkylphenol, is from about 0.15 to about 5.5, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil;
Claim 19
Independent Claim
80 words
A method of preparing an oil additive comprising the steps of: (a) preparing a reaction medium comprising a quantity of magnesium alkylbenzenesulfonate having a T.B.N. up to about 20 so that the ratio of the amount of magnesium alkylbenzenesulfonate, expressed in moles of alkylbenzene sulfonic acid, to the amount of sulfurized calcium alkylphenate, expressed in moles of alkylphenol, is from about 0.15 to about 5.5, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil;
Claim 20
Dependent Claim
95 words
(b) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising a quantity of active magnesium oxide so as to yield a base ratio of from about 5 to about 14, a quantity of glycol so as to yield a MgO to glycol molar ratio of from about 0.1 to about 0.7, and a quantity of amine so as to yield an amine to basic magnesium molar ratio of from about 0.01 to about 0.4; (c) removing glycol and the water from the medium; and (d) removing sediment from the medium.
Claim 21
Dependent Claim
95 words
(b) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising a quantity of active magnesium oxide so as to yield a base ratio of from about 5 to about 14, a quantity of glycol so as to yield a MgO to glycol molar ratio of from about 0.1 to about 0.7, and a quantity of amine so as to yield an amine to basic magnesium molar ratio of from about 0.01 to about 0.4; (c) removing glycol and the water from the medium; and (d) removing sediment from the medium.
Claim 22
Dependent Claim
19 words
The method of claim 16 further comprising, after step (a), precarbonating the reaction medium in the presence of glycol.
Claim 23
Dependent Claim
21 words
The method of claim 16 further comprising, after step (a), precarbonating the reaction medium in the presence of glycol and sulfur.
Claim 24
Dependent Claim
22 words
The method of claim 18 wherein said precarbonation step is performed at a temperature of from about 150° to about 180° C.
Claim 25
Independent Claim
177 words
A method of preparing a lubricating oil additive comprising the steps of: (a) preparing a reaction medium comprising a quantity of magnesium alkylbenzenesulfonate having a T.B.N. up to about 20 so that the ratio of the amount of magnesium alkylbenzenesulfonate, expressed in moles of alkylbenzene sulfonic acid, to the amount of sulfurized calcium alkylphenate, expressed in moles of alkylphenol, is from about 0.25 to about 2, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil; (b) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising a quantity of active magnesium oxide so as to yield a base ratio of from about 7 to about 11, a quantity of glycol so as to yield a Mg to glycol molar ratio of from about 0.3 to about 0.65, and a quantity of amine so as to yield an amine to basic magnesium molar ratio of from about 0.4 to about 0.25; (c) removing the glycol and the water from the medium; and (d) removing sediment from the medium.
Claim 26
Independent Claim
177 words
A method of preparing a lubricating oil additive comprising the steps of: (a) preparing a reaction medium comprising a quantity of magnesium alkylbenzenesulfonate having a T.B.N. up to about 20 so that the ratio of the amount of magnesium alkylbenzenesulfonate, expressed in moles of alkylbenzene sulfonic acid, to the amount of sulfurized calcium alkylphenate, expressed in moles of alkylphenol, is from about 0.25 to about 2, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil; (b) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising a quantity of active magnesium oxide so as to yield a base ratio of from about 7 to about 11, a quantity of glycol so as to yield a Mg to glycol molar ratio of from about 0.3 to about 0.65, and a quantity of amine so as to yield an amine to basic magnesium molar ratio of from about 0.4 to about 0.25; (c) removing the glycol and the water from the medium; and (d) removing sediment from the medium.
Claim 27
Dependent Claim
19 words
The method of claim 20 further comprising, after step (a), precarbonating the reaction medium in the presence of glycol.
Claim 28
Dependent Claim
21 words
The method of claim 20 further comprising, after step (a), precarbonating the reaction medium in the presence of glycol and sulfur.
Claim 29
Dependent Claim
84 words
A lubricating oil additive prepared according to a method comprising the steps of: (a) preparing a reaction medium comprising a magnesium alkylbenzenesulfonate having a T.B.N. up to about 20, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil; (b) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising active magnesium oxide, a glycol, and an amine; (c) removing the glycol and the water from the medium; and (d) removing sediment from the medium.
Claim 30
Dependent Claim
84 words
A lubricating oil additive prepared according to a method comprising the steps of: (a) preparing a reaction medium comprising a magnesium alkylbenzenesulfonate having a T.B.N. up to about 20, a sulfurized calcium alkylphenate having a T.B.N. up to about 200, and a dilution oil; (b) carbonating the reaction medium in the presence of a milk of magnesia mixture comprising active magnesium oxide, a glycol, and an amine; (c) removing the glycol and the water from the medium; and (d) removing sediment from the medium.
Claim 31
Dependent Claim
30 words
A lubricating oil additive prepared according to a method of claim 23, said method further comprising, after step (a), precarbonating the reaction medium in the presence of glycol and sulfur.
Claim 32
Dependent Claim
27 words
A method of improving the detergent, dispersant, and anti-wear properties of lubricating oils, comprising adding to said oils an effective amount of the additive of claim 23.
Claim 33
Dependent Claim
27 words
A method of improving the detergent, dispersant, and anti-wear properties of lubricating oils, comprising adding to said oils an effective amount of the additive of claim 24.
References Cited (Backward Citations)
US3282835A
Cited
US3256186A
Cited
GB1144084A
Cited
US3509053A
Cited
US3464970A
Cited
GB1280749A
Cited
US3928216A
Cited
US3936480A
Cited
US3862981A
Cited
US3966621A
Cited
US4049560A
Cited
US4042514A
Cited
US4016093A
Cited
US4222882A
Cited
US4229308A
Cited
US4251379A
Cited
US4293431A
Cited
US4302342A
Cited
US4382004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |