US4130494A
Expired / Lapsed
US
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Synthetic lubricant composition
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1978-02-06
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Granted: 1978-12-19
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Expires: 1998-02-06
Abstract
Abstract Synthetic lubricating oil compositions comprising a unique combination of additives. A variety of esters known in the prior art to be useful in synthetic lubricating compositions for aircraft engines may be used in the compositions of this invention. Esters derived from neopentyl polyols are, however, preferred and best results are obtained when the esters are derived from a mixture of such polyols. The additive combination comprises, essentially, an oil-soluble organic amine salt of a phosphate ester and a neutral oil-soluble organosulfonic acid ammonium salt. The additive combination is particularly effective in increasing the load carrying ability of lubricating oils, which especially is critical in applications such as turbine engines.
Inventors
- 👤 Harold Shaub
- 👤 Stephen J. Metro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:11
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M105/00; C10M105/08; C10M105/32; C10M133/00; C10M133/02; C10M133/04; C10M133/12; C10M135/00; C10M135/08; C10M135/10; C10M137/00; C10M137/02; C10M137/04; C10M137/08; C10M2207/00; C10M2207/28; C10M2207/2805; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/34; C10M2207/345; C10M2209/00; C10M2209/10; C10M2209/11; C10M2209/111; C10M2209/112; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/067; C10M2215/068; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/043
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
361 words
A synthetic lubricating oil composition comprising a major amount of a synthetic ester base oil stock, from about 0.01 to about 10.0 parts per 100 parts by weight of the ester base oil stock of an organo amine salt of a phosphoric acid ester selected from the group consisting of organo amine salts characterized by the formula: ##STR7## or the formula: ##STR8## and mixtures thereof, wherein R 1 is an alkyl or alkenyl group containing from 1 to 10 carbon atoms, R 2 is either the same or a different alkyl or alkenyl group containing from 1 to 10 carbon atoms and R 3 is either hydrogen, an alkyl or alkenyl group containing from 1 to 22 carbon atoms or an arylalkyl group characterized by the formula: ##STR9## wherein R 4 is hydrogen, or an alkyl or alkenyl group containing from 1 to 12 carbon atoms and R 5 is hydrogen or an alkyl or alkenyl group containing from 1 to 6 carbon atoms; and from about 0.01 to about 5.0 parts per 100 parts by weight of the ester base oil stock of an organo sulfonic acid ammonium salt, said synthetic ester base oil stock selected from the group consisting of (a) simple esters derived from monohydric aliphatic alcohols having 1 to 18 carbon atoms and monobasic aliphatic acids having 2 to 22 carbon atoms or dibasic aliphatic acids having 2 to 25 carbon atoms, (b) complex esters formed from the reaction of two or more of the following compounds: (i) monohydric aliphatic alcohols having 1 to 18 carbon atoms, (ii) monobasic aliphatic acids having 2 to 22 carbon atoms, (iii) aliphatic glycols or polyglycols having from 2 to 70 carbon atoms, (iv) polyhydric aliphatic alcohols having 4 to 25 carbon atoms, (v) dibasic aliphatic acids having from 2 to 22 carbon atoms, and (iv) polybasic aliphatic acids having 3 to 30 carbon atoms, where at least one polyfunctional alcohol and at least one polyfunctional acid are employed and (c) polyesters derived from polyhydric aliphatic alcohols containing from 2 to 10 hydroxyl groups and 4 to 25 carbon atoms and monobasic aliphatic acids having from 2 to 22 carbon atoms.
Claim 2
Dependent Claim
361 words
A synthetic lubricating oil composition comprising a major amount of a synthetic ester base oil stock, from about 0.01 to about 10.0 parts per 100 parts by weight of the ester base oil stock of an organo amine salt of a phosphoric acid ester selected from the group consisting of organo amine salts characterized by the formula: ##STR7## or the formula: ##STR8## and mixtures thereof, wherein R 1 is an alkyl or alkenyl group containing from 1 to 10 carbon atoms, R 2 is either the same or a different alkyl or alkenyl group containing from 1 to 10 carbon atoms and R 3 is either hydrogen, an alkyl or alkenyl group containing from 1 to 22 carbon atoms or an arylalkyl group characterized by the formula: ##STR9## wherein R 4 is hydrogen, or an alkyl or alkenyl group containing from 1 to 12 carbon atoms and R 5 is hydrogen or an alkyl or alkenyl group containing from 1 to 6 carbon atoms; and from about 0.01 to about 5.0 parts per 100 parts by weight of the ester base oil stock of an organo sulfonic acid ammonium salt, said synthetic ester base oil stock selected from the group consisting of (a) simple esters derived from monohydric aliphatic alcohols having 1 to 18 carbon atoms and monobasic aliphatic acids having 2 to 22 carbon atoms or dibasic aliphatic acids having 2 to 25 carbon atoms, (b) complex esters formed from the reaction of two or more of the following compounds: (i) monohydric aliphatic alcohols having 1 to 18 carbon atoms, (ii) monobasic aliphatic acids having 2 to 22 carbon atoms, (iii) aliphatic glycols or polyglycols having from 2 to 70 carbon atoms, (iv) polyhydric aliphatic alcohols having 4 to 25 carbon atoms, (v) dibasic aliphatic acids having from 2 to 22 carbon atoms, and (iv) polybasic aliphatic acids having 3 to 30 carbon atoms, where at least one polyfunctional alcohol and at least one polyfunctional acid are employed and (c) polyesters derived from polyhydric aliphatic alcohols containing from 2 to 10 hydroxyl groups and 4 to 25 carbon atoms and monobasic aliphatic acids having from 2 to 22 carbon atoms.
Claim 3
Dependent Claim
76 words
The lubricating oil composition of claim 1 wherein said organo sulfonic acid ammonium salt includes a sulfonate group containing a hydrocarbyl group and an ammonium group of the formula NR 1 R 2 R 3 R 4 x wherein x is 0 or 1, R 1 , r 2 and R 4 are each hydrogen or a C 1 to C 28 hydrocarbyl group, and R 3 is a C 1 to C 28 hydrocarbyl group.
Claim 4
Dependent Claim
21 words
The lubricating oil composition of claim 2, wherein the sulfonate group contains an alkyl group of 1 to 18 carbon atoms.
Claim 5
Dependent Claim
31 words
The lubricating oil composition of claim 2, wherein the sulfonate group contains an alkylated phenyl, naphthyl or anthranil aromatic group having at least one C 1 to C 12 alkyl group.
Claim 6
Dependent Claim
37 words
The lubricating oil composition of claim 2, wherein the sulfonate group contains a radical selected from the group consisting of an n-dodecylbenzene group, a methane group, a p-toluene group, a naphthalene group and a DL camphor group.
Claim 7
Dependent Claim
10 words
The lubricant composition of claim 2 wherein x is 0.
Claim 8
Dependent Claim
30 words
The lubricant composition of claim 1, wherein R 1 and R 2 are unsubstituted alkyl groups and R 3 is a C 1 to C 28 2-hydroxy substituted alkyl group.
Claim 9
Dependent Claim
27 words
The lubricant composition of claim 2, wherein R 2 and R 3 are n-butyl groups and R 4 is an n-butyl group or a 2-hydroxy pentadecyl group.
Claim 10
Dependent Claim
22 words
The lubricant composition of claim 2, wherein x is 1 and R 1 , R 2 and R 4 are ethyl groups.
Claim 11
Dependent Claim
39 words
The lubricant composition of claim 2, wherein the ammonium group is derived from a mixed branched chain isomeric 1,1-dimethyl C 12 -C 14 primary aliphatic amine or a mixed branched chain isomeric 1,1-dimethyl C 18 -C 22 primary amine.
Claim 12
Dependent Claim
145 words
The composition of claim 2 wherein said simple ester is derived from monohydric aliphatic alcohols having 4 to 13 carbon atoms and monobasic aliphatic acids having 4 to 12 carbon atoms or dibasic aliphatic acids having 4 to 14 carbon atoms, said complex esters are derived from the reaction of two or more of the following compounds: (i) monohydric aliphatic alcohols having 4 to 13 carbon atoms, (ii) monobasic aliphatic acids having 4 to 12 carbon atoms, (iii) aliphatic glycols or polyglycols having 2 to 18 carbon atoms, (iv) polyhydric aliphatic alcohols having 5 to 20 carbon atoms, (v) dibasic aliphatic acids having 4 to 14 carbon atoms and (vi) polybasic aliphatic acids having 4 to 14 carbon atoms, and said polyester is derived from polyhydric aliphatic alcohols containing from 5 to 20 carbon atoms and monobasic aliphatic acids having 4 to 12 carbon atoms.
Claim 13
Dependent Claim
34 words
The lubricant composition of claim 1, wherein the synthetic ester oil is made by esterifying a polyol having at least 3 hydroxyl groups with a monocarboxylic alkanoic acid having 5 to 10 carbon atoms.
Claim 14
Dependent Claim
40 words
The lubricant composition of claim 1, wherein the synthetic ester oil is an ester of a mono-basic aliphatic saturated fatty acid and a polyol chosen from the group consisting of tri-hydroxy polyols, tetrahydroxy polyols and dimers of said tetrahydroxy polyols.
Claim 15
Dependent Claim
65 words
The synthetic lubricating composition of claim 1, wherein said organo amine salt is present at a concentration within the range from about 0.01 to about 0.5 parts, by weight, organosulfonic acid ammonium salt is present at a concentration within the range from about 0.01 to about 0.5 parts by weight, and the base oil stock is present at a concentration of 100 parts by weight.
Claim 16
Dependent Claim
32 words
The synthetic lubricating oil composition of claim 1, further comprising at least one antioxidant selected from the group consisting of di(alkylphenyl) amines, phenyl-α-naphthylamine, phenyl-β-naphthylamine and alkylphenyl-α-naphthylamine and alkylphenyl-β naphthylamine, and mixtures thereof.
Claim 17
Dependent Claim
25 words
The synthetic lubricating oil of claim 15, wherein said lubricating oil composition comprises at least one di(alkylphenyl) amine and at least one alkylphenyl-α-naphthylamine or alkylphenyl-β-naphthylamine.
Claim 18
Dependent Claim
48 words
The synthetic oil composition of claim 15, wherein the di(alkylphenyl) amine and the alkylphenyl-α-naphthylamine or alkylphenyl-β-naphthylamine are present at concentrations within the range from about 0.25 to about 5.0 and about 0.25 to about 3.0 part by weight, respectively, per 100 parts by weight of base oil stock.
Claim 19
Dependent Claim
18 words
The synthetic lubricating oil of claim 1, further comprising amine antioxidants and a tri(alkylphenyl) ester of phosphoric acid.
Claim 20
Dependent Claim
28 words
The synthetic lubricating oil composition of claim 2, further comprising amine oxidation inhibitors, a tri(alkylphenyl) ester of phosphoric acid, a dispersant, a hydrolytic stabilizer and a storage stabilizer.
Claim 21
Dependent Claim
46 words
The composition of claim 19, wherein said organo amine salt of a phosphoric acid ester is a mixture of such esters prepared by combining a mixture of C 9 -C 13 alkylphenyl amines with a mixture of C 1 -C 4 alkyl esters of phosphoric acid.
Claim 22
Dependent Claim
17 words
The composition of claim 20, wherein said oxidation inhibitors are a mixture of di(octylphenyl) amine and octylphenyl-β-naphthylamine.
Claim 23
Dependent Claim
44 words
The composition of claim 21, wherein the di(octylphenyl) amine and the octylphenyl-β-naphtylamine are present at concentrations within the range from about 0.25 to about 5.0 and about 0.25 to about 3.0 part, by weight, respectively, per 100 parts by weight, of base oil stock.
References Cited (Backward Citations)
US2777819A
Cited
US3075005A
Cited
US3203895A
Cited
US3247109A
Cited
US3340188A
Cited
US3567636A
Cited
US3431265A
Cited
US3425953A
Cited
US3914179A
Cited
US3720612A
Cited
US3859218A
Cited
BE806851A
Cited
GB1440129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |