US5017299A
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Novel ethylene alpha-olefin copolymer substituted Mannich base lubricant dispersant additives
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1988-08-01
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Granted: 1991-05-21
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Expires: 2008-08-01
Abstract
Abstract The present invention is directed to oil-soluble lubricating oil additives comprising Mannich Base condensates of an alkyl substituted hydroxy aromatic compound with formaldehyde and an amine, wherein the alkyl-moiety of the aromatic compounds is derived from at least one ethylene alpha-olefin copolymer of 300 to 10,000 number average molecular weight, wherein at least about 30% of the polymer's chains contain terminal ethenylidene unsaturation. The Mannich Base condensates of this invention are useful as dispersants.
Inventors
- 👤 Antonio Gutierrez
- 👤 Won R. Song
- 👤 Robert D. Lundberg
- 👤 Robert A. Kleist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:01
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C08; C08F; C08F8/00; C08F8/02; C08F8/30; C08F8/32; C08F210/00; C08F210/16; C10M2205/00; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2221/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
89 words
A lubricating oil dispersant additive useful in oleaginous compositions which comprises a condensation product obtained by the reaction of: (a) at least one alkyl-substituted hydroxyaromatic compound formed by the alkylation of at least one hydroxy aromatic compound with at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 10,000 number average molecular weight, at least 30% of said polymer's chains contain terminal ethenylidene unsaturation; (b) at least one aldehyde reactant; and (c) at least one nucleophilic reactant, said dispersant additive having a VR' value of less than 4.1.
Claim 2
Dependent Claim
89 words
A lubricating oil dispersant additive useful in oleaginous compositions which comprises a condensation product obtained by the reaction of: (a) at least one alkyl-substituted hydroxyaromatic compound formed by the alkylation of at least one hydroxy aromatic compound with at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 10,000 number average molecular weight, at least 30% of said polymer's chains contain terminal ethenylidene unsaturation; (b) at least one aldehyde reactant; and (c) at least one nucleophilic reactant, said dispersant additive having a VR' value of less than 4.1.
Claim 3
Dependent Claim
13 words
The dispersant additive of claim 1 wherein said polymer comprises an ethylene-propylene copolymer.
Claim 4
Dependent Claim
21 words
The dispersant additive of claim wherein said copolymer has a number average molecular weight of from about 700 to about 5,000.
Claim 5
Dependent Claim
18 words
The dispersant additive of claim 3 wherein said number average molecular weight is between about 1,500 and 3,000.
Claim 6
Dependent Claim
22 words
The dispersant additive of claim 1 wherein said polymer has a molar ethylene content of between about 20 and about 80 percent.
Claim 7
Dependent Claim
22 words
The dispersant additive of claim 2 wherein said polymer has a molar ethylene content of between about 45 and about 65 percent.
Claim 8
Dependent Claim
11 words
The dispersant additive of claim 1 wherein said alpha-olefin comprises butene-1.
Claim 9
Dependent Claim
18 words
The dispersant additive of claim 2 wherein said number average molecular weight is between about 1,500 and 3,000.
Claim 10
Dependent Claim
30 words
The dispersant adduct according to claim 1 wherein the nucleophilic reagent comprises an amine containing from 2 to 60 carbon atoms and from 1 to 12 nitrogen atoms per molecule.
Claim 11
Dependent Claim
35 words
The dispersant adduct according to claim 9 wherein said amine comprises a polyalkylenepolyamine wherein said alkylene group contains 2 to 60 carbons and said polyalkylenepolyamine contains from 2 to about 9 nitrogen atoms per molecule.
Claim 12
Dependent Claim
12 words
The dispersant adduct according to claim 10 wherein said amine comprises polyethylenepolyamine.
Claim 13
Dependent Claim
17 words
A concentrate containing from about 3 to 45 weight percent of the dispersant adduct of claim 1.
Claim 14
Dependent Claim
17 words
A concentrate containing from about 10 to 35 weight percent of the dispersant adduct of claim 2.
Claim 15
Dependent Claim
23 words
A lubricating oil composition containing from about 0.1 to 20 weight percent of the dispersant adduct of any of claims 1 or 2.
Claim 16
Dependent Claim
89 words
A process for producing a low sediment lubricating oil dispersant material which comprises contacting (A) at least one alkyl-substituted hydroxyaromatic compound formed by the alkylation of at least one hydroxy aromatic compound with at least one ethylene alpha-olefin polymer of 300 to 10,000 number average molecular weight, wherein at least 30% of said polymer's chains contain terminal ethenylidene unsaturation, (B) at least one aldehyde reactant; and (C) at least one nucleophilic reactant, under condensation conditions to form said dispersant material characterized by a VR, value of less than 4.1.
Claim 17
Dependent Claim
89 words
A process for producing a low sediment lubricating oil dispersant material which comprises contacting (A) at least one alkyl-substituted hydroxyaromatic compound formed by the alkylation of at least one hydroxy aromatic compound with at least one ethylene alpha-olefin polymer of 300 to 10,000 number average molecular weight, wherein at least 30% of said polymer's chains contain terminal ethenylidene unsaturation, (B) at least one aldehyde reactant; and (C) at least one nucleophilic reactant, under condensation conditions to form said dispersant material characterized by a VR, value of less than 4.1.
Claim 18
Dependent Claim
12 words
The process of claim 15 wherein said polymer comprises an ethylene-propylene copolymer.
Claim 19
Dependent Claim
21 words
The process of claim 15 wherein said copolymer has a number average molecular weight of from about 700 to about 5,000.
Claim 20
Dependent Claim
17 words
The process of claim 17 wherein said number average molecular weight is between about 1,500 and 3,000.
Claim 21
Dependent Claim
21 words
The process of claim 15 wherein said polymer has a molar ethylene content of between about 20 and about 80 percent.
Claim 22
Dependent Claim
21 words
The process of claim 16 wherein said polymer has a molar ethylene content of between about 45 and about 65 percent.
Claim 23
Dependent Claim
10 words
The process of claim 15 wherein said alpha-olefin comprises butene-1.
Claim 24
Dependent Claim
17 words
The process of claim 16 wherein said number average molecular weight is between about 1,500 and 3,000.
Claim 25
Dependent Claim
29 words
The process according to claim 15 wherein the nucleophilic reagent comprises an amine containing from 2 to 60 carbon atoms and from 1 to 12 nitrogen atoms per molecule.
Claim 26
Dependent Claim
34 words
The process according to claim 23 wherein said amine comprises a polyalkylenepolyamine wherein said alkylene group contains 2 to 60 carbons and said polyalkylenepolyamine contains from 2 to about 9 nitrogen atoms per molecule.
Claim 27
Dependent Claim
11 words
The process according to claim 24 wherein said amine comprises polyethylenepolyamine.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
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