Patent US4198306A successfully refreshed from Google Patents.
US4198306A
Expired / Lapsed
US
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Deposit control and dispersant additives
Assignee: Chevron USA Inc
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Filing: 1978-07-03
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Granted: 1980-04-15
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Expires: 1998-07-03
Abstract
Abstract Hydrocarbylpoly(oxyalkylene) aminoesters which are monoesters of a hydrocarbyl-terminated poly(oxyalkylene) alcohol and a monocarboxylic C 2 -C 20 (amino-substituted) alkanoic acid find use as fuel and lubricating oil additives.
Inventors
- 👤 Robert A. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:12
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/3322; C08G65/333; C08G65/33303; C08G65/33306; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/22; C10L1/16; C10L1/1616; C10L1/18; C10L1/182; C10L1/1822; C10L1/1824; C10L1/192; C10L1/198; C10L1/1985; C10M2207/00; C10M2207/02; C10M2207/021; C10M2215/00; C10M2215/02; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
108 words
Hydrocarbylpoly(oxyalkylene) aminoesters having a molecular weight from about 600 to about 5,000, suitable for use as deposit control additives and dispersants in hydrocarbonaceous fuels and lubricants, which are monoesters of a monocarboxylic C 2 -C 20 (amino-substituted) alkanoic acid and a hydrocarbylpoly(oxyalkylene) alcohol; wherein said amino-substituent contains about 1-12 amine nitrogen atoms and up to 40 carbon atoms and has a carbon:nitrogen ratio of up to about 10:1; said hydrocarbylpoly(oxyalkylene) moiety has a molecular weight from about 500 to about 5,000 and is composed of at least 5 oxyalkylene units of from 2 to 5 carbon atoms; and said hydrocarbyl group contains from 1 to 30 carbon atoms.
Claim 2
Dependent Claim
108 words
Hydrocarbylpoly(oxyalkylene) aminoesters having a molecular weight from about 600 to about 5,000, suitable for use as deposit control additives and dispersants in hydrocarbonaceous fuels and lubricants, which are monoesters of a monocarboxylic C 2 -C 20 (amino-substituted) alkanoic acid and a hydrocarbylpoly(oxyalkylene) alcohol; wherein said amino-substituent contains about 1-12 amine nitrogen atoms and up to 40 carbon atoms and has a carbon:nitrogen ratio of up to about 10:1; said hydrocarbylpoly(oxyalkylene) moiety has a molecular weight from about 500 to about 5,000 and is composed of at least 5 oxyalkylene units of from 2 to 5 carbon atoms; and said hydrocarbyl group contains from 1 to 30 carbon atoms.
Claim 3
Dependent Claim
19 words
The aminoester of claim 1 in which said monocarboxylic alkanoic acid is a C 2 -C 10 alkanoic acid.
Claim 4
Dependent Claim
19 words
The aminoester of claim 1 in which said monocarboxylic alkanoic acid is selected from propionic, butyric and pentanoic acids.
Claim 5
Dependent Claim
40 words
The aminoester of claim 1 wherein said amino-substituent contains from 2 to 12 nitrogen atoms and from 2 to 24 carbon atoms and is derived from a polyalkylene polyamine wherein the alkylene unit contains from 2 to 6 carbon atoms.
Claim 6
Dependent Claim
21 words
The aminoester of claim 4 in which said polyalkylene polyamine contains from 2 to 6 carbon atoms and 2-4 nitrogen atoms.
Claim 7
Dependent Claim
22 words
The aminoester of claim 5 in which said polyalkylene polyamine is selected from ethylene diamine, diethylene triamine, triethylene tetraamine, and dimethylamine propylamine.
Claim 8
Dependent Claim
27 words
The aminoester of claim 1 in which said hydrocarbyl group is selected from C 1 -C 30 alkyl groups and C 7 -C 30 alkyl phenyl groups.
Claim 9
Dependent Claim
15 words
The aminoester of claim 1 wherein said hydrocarbylpoly(oxyalkylene) moiety has a molecular weight of 1000-2500.
Claim 10
Dependent Claim
16 words
The aminoester of claim 1 in which said oxyalkylene units are C 3 -C 4 units.
Claim 11
Dependent Claim
10 words
The aminoester of claim 1 which is a butylpoly(oxybutylene) beta-aminopropionate.
Claim 12
Dependent Claim
11 words
The aminoester of claim 1 which is an alkylphenyl poly(oxybutylene) beta-aminopropionate.
Claim 13
Dependent Claim
10 words
The aminoester of claim 1 which is a butylpoly(oxypropylene) beta-aminopropionate.
Claim 14
Dependent Claim
46 words
A fuel composition comprising a major amount of hydrocarbons boiling in the gasoline range and 30-2000 ppm of the aminoester of claim 1 in which at least sufficient number of said oxyalkylene units are branched-chain oxyalkylene units to render said ester soluble in said fuel composition.
Claim 15
Dependent Claim
59 words
A lubricating composition comprising a major amount of an oil of lubricating viscosity and 0.01-10 weight percent of the aminoester of claim 1 in which at least a sufficient number of said oxyalkylene units are branched-chain oxyalkylene units to render said ester soluble in said lubricating oil composition, and said hydrocarbyl group contains from 1 to 30 carbon atoms.
Claim 16
Dependent Claim
22 words
The fuel composition of claim 13 which also contains from 100 to 5000 ppm of a fuel-soluble poly(oxyalkylene) alcohol, glycol or polyol.
Claim 17
Dependent Claim
14 words
The fuel composition of claim 15 in which the poly(oxyalkylene) compound is propylpoly(oxypropylene) alcohol.
Claim 18
Dependent Claim
32 words
A concentrate comprising an inert stable oleophilic organic solvent boiling in the range for about 150° to 400° F., and from 10 to 25 weight percent of the aminoester of claim 1.
Claim 19
Dependent Claim
26 words
A concentrate according to claim 17 which also contains (C 1 -C 30 hydrocarbyl) poly(oxyalkylene) alcohol in the amount of from 5 to 80 weight percent.
References Cited (Backward Citations)
US2679511A
Cited
US2679512A
Cited
US2679519A
Cited
US2679514A
Cited
US2679515A
Cited
US2679516A
Cited
US2679513A
Cited
US3359303A
Cited
US3522620A
Cited
US3454625A
Cited
US3957855A
Cited
US3957854A
Cited
US3836471A
Cited
US4035409A
Cited
US4039462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |