US4176074A
Expired / Lapsed
US
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Molybdenum complexes of ashless oxazoline dispersants as friction reducing antiwear additives for lubricating oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1978-09-18
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Granted: 1979-11-27
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Expires: 1998-09-18
Abstract
Abstract An oil-soluble molybdenum complex of an ashless oxazoline dispersant, preferably an oil-soluble reaction product of a molybdenum compound such as molybdic oxide with 0.5 to 1 molar equivalent of a hydrocarbon substituted mono- and bisoxazolines obtained as a reaction product of hydrocarbyl substituted dicarboxylic acid, ester, or anhydride, for example, polyisobutenylsuccinic anhydride with from 1 to 2 molar equivalents of a 2,2-disubstituted-2-amino-1-alkanols, such as tris-(hydroxymethylamino)methane (THAM), is a useful additive to a lubricating oil since both the sludge dispersant and antifriction properties of said oil are enhanced.
Inventors
- 👤 Keith Coupland
- 👤 Juan M. Salva
- 👤 Clinton R. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:36
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/18; C07; C07F; C07F11/00; C07F11/005; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/06; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/027; C10M2207/028; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/287; C10M2207/288; C10M2207/289; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/047; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2010/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
23 words
An oil-soluble molybdenum complex of an ashless oxazoline dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant.
Claim 2
Dependent Claim
23 words
An oil-soluble molybdenum complex of an ashless oxazoline dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant.
Claim 3
Dependent Claim
46 words
An oil-soluble molybdenum complex according to claim 1 wherein said dispersant is an oxazoline compound having an oil-solubilizing group in the form of a long chain hydrocarbon group attached to an acid group so the substituted acid contains a total of 50 to 400 carbon atoms.
Claim 4
Dependent Claim
99 words
The complex according to claim 2 wherein said complex is the reaction product of a molybdenum compound with 0.5 to 1 molar equivalent of a C 8 to C 400 hydrocarbon substituted mono- and bisoxazoline obtained as a reaction product of hydrocarbyl substituted dicarboxylic acid, ester, or anhydride, with from 1 to 2 molar equivalents of a 2,2-disubstituted-2-amino-1-alkanol represented by the formula ##STR4## wherein X is an alkyl or hydroxy alkyl group, with at least one of the X substituents being a hydroxy alkyl group of the structure --(CH 2 ) n OH, wherein n is 1 to 3.
Claim 5
Dependent Claim
28 words
The complex according to claim 3 wherein said molybdenum compound is of the class consisting of molybdic trioxide, ammonium thiomolybdate, ammonium bismolybdate, molybdenum halides, and ammonium heptamolybdate tetrahydrate.
Claim 6
Dependent Claim
47 words
A lubricating oil composition comprising a major proportion of mineral oil and a minor but a friction reducing amount of an oil-soluble molybdenum complex of an ashless oxazoline lubricating oil dispersant, said dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant.
Claim 7
Dependent Claim
47 words
A lubricating oil composition comprising a major proportion of mineral oil and a minor but a friction reducing amount of an oil-soluble molybdenum complex of an ashless oxazoline lubricating oil dispersant, said dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant.
Claim 8
Dependent Claim
88 words
A hydrocarbon composition comprising a major portion of a hydrocarbon and at least a friction reducing amount of the combination of: (a) a molybdenum complex of an ashless oxazoline dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant; and (b) an oil-soluble active sulfur donor, said combination providing from about 0.01 to 2.0 weight percent molybdenum and said sulfur donor being present in at least 0.25 weight percent, all of said weight percent being based on the total weight of said composition.
Claim 9
Dependent Claim
88 words
A hydrocarbon composition comprising a major portion of a hydrocarbon and at least a friction reducing amount of the combination of: (a) a molybdenum complex of an ashless oxazoline dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant; and (b) an oil-soluble active sulfur donor, said combination providing from about 0.01 to 2.0 weight percent molybdenum and said sulfur donor being present in at least 0.25 weight percent, all of said weight percent being based on the total weight of said composition.
Claim 10
Dependent Claim
133 words
A hydrocarbon composition according to claim 6 wherein said hydrocarbon is mineral oil, said complex is oil-soluble and derived from the reaction product of one mole of a hydrocarbyl substituted dicarboxylic acid material wherein said hydrocarbyl substituent has a (M n ) ranging from 700 to 5,000 reacted with one to two moles of a 2,2-disubstituted-2-amino-1-alkanol represented by the formula ##STR5## wherein X is an alkyl or hydroxy alkyl group, with at least one of the X substituents being a hydroxy alkyl group of the structure --(CH 2 ) n OH where n is 1 to 3, said reaction product being complexed with from 1 to 2 molar equivalents of molybdic oxide, said complex containing from 0.5 to 20 wt.% molybdenum and said sulfur donor is an oil-soluble dihydrocarbyl ester of dithiophosphoric acid.
Claim 11
Dependent Claim
117 words
A hydrocarbon composition according to claim 7 wherein said mineral oil has a viscosity as measured by ASTM D-445 of from about 2 to 40 centistokes at 99° C., said substituted dicarboxylic acid material is poly(isobutenyl) succinic anhydride wherein said poly(isobutenyl) group has a (M n ) ranging from 900 to 1600, and reacted with from 1.5 to 2 moles of said alkanol, said alkanol being tris(hydroxymethyl) aminomethane and said active sulfur donor is zinc dihydrocarbyl dithiophosphate present in an amount of from 0.2 to 2 parts by weight per part by weight of said molybdenum complex which is present in an amount of from 0.02 to 1.0 wt.% based upon the total weight of said composition.
Claim 12
Dependent Claim
65 words
A concentrate comprising from 5 to 80 weight percent of the combination of an oil-soluble molybdenum complex of an ashless oxazoline dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant and from about 0.1 to 10 parts by weight of active sulfur donor per part by weight of said complex and 20 to 95 weight percent of mineral oil.
Claim 13
Dependent Claim
65 words
A concentrate comprising from 5 to 80 weight percent of the combination of an oil-soluble molybdenum complex of an ashless oxazoline dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant and from about 0.1 to 10 parts by weight of active sulfur donor per part by weight of said complex and 20 to 95 weight percent of mineral oil.
Claim 14
Independent Claim
75 words
A method of making an oil-soluble molybdenum complex of an ashless nitrogen dispersant comprising the step of complexing a source of molybdenum with an ashless oxazoline dispersant in a binary solvent system comprising an aqueous component of the class consisting of water and ammonium hydroxide and a non-aqueous component of the class consisting of tetrahydrofuran and a hydrocarbon and the volume ratio of said aqueous component to said non-aqueous component ranging from 1:1000 to 1:1.
Claim 15
Independent Claim
75 words
A method of making an oil-soluble molybdenum complex of an ashless nitrogen dispersant comprising the step of complexing a source of molybdenum with an ashless oxazoline dispersant in a binary solvent system comprising an aqueous component of the class consisting of water and ammonium hydroxide and a non-aqueous component of the class consisting of tetrahydrofuran and a hydrocarbon and the volume ratio of said aqueous component to said non-aqueous component ranging from 1:1000 to 1:1.
Claim 16
Dependent Claim
37 words
A gasoline having improved antiwear properties containing from 10 to 1,000 parts per million of a molybdenum complex of an ashless oxazoline dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant.
Claim 17
Dependent Claim
37 words
A gasoline having improved antiwear properties containing from 10 to 1,000 parts per million of a molybdenum complex of an ashless oxazoline dispersant having from 0.5 to 20 wt.% molybdenum based on the weight of said dispersant.
Claim 18
Dependent Claim
17 words
A lubricating oil composition according to claim 5 wherein said dispersant has up to 10 wt.% molybdenum.
Claim 19
Dependent Claim
29 words
A lubricating oil composition according to claim 12 wherein said dispersant is borated and contains from 0.1 to 2.0 wt.% boron based on the total weight of said dispersant.
Claim 20
Dependent Claim
26 words
A hydrocarbon composition according to claim 6 wherein said hydrocarbon is mineral oil and said molybdenum complex is oil-soluble and contains up to 10 wt.% molybdenum.
Claim 21
Dependent Claim
15 words
A concentrate according to claim 9 wherein said dispersant has up to 10 wt.% molybdenum.
Claim 22
Dependent Claim
19 words
A concentrate according to claim 15 wherein said dispersant is borated and contains from 0.1 to 2.0 wt.% boron.
Claim 23
Dependent Claim
19 words
The method according to claim 10 wherein said dispersant is borated and contains from 0.1 to 2.0 wt.% boron.
References Cited (Backward Citations)
US2450806A
Cited
US2450807A
Cited
GB882295A
Cited
US4102798A
Cited
US4035309A
Cited
US4062786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |