US4195976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive useful in oleaginous compositions
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1978-05-22
•
Granted: 1980-04-01
•
Expires: 1998-05-22
Abstract
Abstract Oil soluble oxazoline reaction products of hydrocarbon substituted dicarboxylic acid, ester, or anhydride, for example polyisobutenylsuccinic anhydride, with 2,2-disubstituted-2-amino-1-alkanols, such as tris-hydroxymethylaminomethane (THAM), are useful additives in oleaginous compositions, such as sludge dispersants for lubricating oil or gasoline.
Inventors
- 👤 Jack Ryer
- 👤 James Zielinski
- 👤 Harold N. Miller
- 👤 Stanley J. Brois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:32
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/10; C07D263/12; C07D263/14; C07F; C07F5/00; C07F5/02; C07F5/04; C07F9/00; C07F9/02; C07F9/547; C07F9/6527; C07F9/653; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08G; C08G63/00; C08G63/68; C08G63/685; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10L1/232; C10L1/233; C10L1/234; C10L1/238; C10L1/26; C10L1/2691; C10L1/30; C10L1/301; C10L1/303; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/026; C10M2205/14; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/027; C10M2207/028; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/28; C10M2207/282; C10M2207/32; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/109; C10M2209/11; C10M2209/112; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/061; C10M2223/065; C10M2223/08; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/06; C10M2227/061; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/02; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2040/25; C10N2040/252; C10N2040/253; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
160 words
An oil stream in refinery operations which has been inhibited to prevent fouling of process equipment by incorporation of 0.001 to 2.0 wt. % of bis-oxazoline of a molar proportion of a hydrocarbon-substituted C 4 -C 10 dicarboxylic acid material selected from the group consisting of dicarboxylic acid, ester and anhydrides thereof, having more than 50 carbon atoms in said hydrocarbon substituent; reacted with about two molar proportions of a 2,2-disubstituted-2-amino-1-alkanol having 2 to 3 hydroxy groups and containing a total of 4 to 8 carbons of the formula: ##STR6## wherein X is alkyl or hydroxy alkyl, said alkyl groups having 1 to 3 carbon atoms, and at least one of said X is a hydroxy alkyl group of the structure --(CH 2 ) n OH where n is 1 to 3; at a temperature in the range of about 140° to 240° C. for about 1/2 to 24 hours with the removal of about three molar proportions of water.
Claim 2
Dependent Claim
160 words
An oil stream in refinery operations which has been inhibited to prevent fouling of process equipment by incorporation of 0.001 to 2.0 wt. % of bis-oxazoline of a molar proportion of a hydrocarbon-substituted C 4 -C 10 dicarboxylic acid material selected from the group consisting of dicarboxylic acid, ester and anhydrides thereof, having more than 50 carbon atoms in said hydrocarbon substituent; reacted with about two molar proportions of a 2,2-disubstituted-2-amino-1-alkanol having 2 to 3 hydroxy groups and containing a total of 4 to 8 carbons of the formula: ##STR6## wherein X is alkyl or hydroxy alkyl, said alkyl groups having 1 to 3 carbon atoms, and at least one of said X is a hydroxy alkyl group of the structure --(CH 2 ) n OH where n is 1 to 3; at a temperature in the range of about 140° to 240° C. for about 1/2 to 24 hours with the removal of about three molar proportions of water.
Claim 3
Dependent Claim
17 words
An oil stream according to claim 1 wherein said hydrocarbon-substituted dicarboxylic acid material is alkenyl succinic anhydride.
Claim 4
Dependent Claim
11 words
A composition according to claim 2 wherein said amino-1-alkanol is 2-amino-2-methyl-1-propanol.
Claim 5
Dependent Claim
11 words
A composition according to claim 2 wherein said amino-1-alkanol is tris-(hydroxymethyl)aminomethane.
Claim 6
Dependent Claim
156 words
A normally liquid petroleum distillate fuel composition comprising: a major amount of petroleum fuel and 0.001 to 0.5 wt. % of bis-oxazoline of a molar proportion of a hydrocarbon-substituted C 4 -C 10 dicarboxylic acid material selected from the group consisting of dicarboxylic acid, ester and anhydrides thereof, having more than 50 carbon atoms in said hydrocarbon substituent; reacted with about two molar proportions of a 2,2-disubstituted-2-amino-1-alkanol having 2 to 3 hydroxy groups and containing a total of 4 to 8 carbons of the formula: ##STR7## wherein X is alkyl or hydroxy alkyl, said alkyl groups having 1 to 3 carbon atoms, and at least one of said X is a hydroxy alkyl group of the structure --(CH 2 ) n OH where n is 1 to 3; at a temperature in the range of about 140° to 240° C. for about 1/2 to 24 hours with the removal of about three molar proportions of water.
Claim 7
Dependent Claim
156 words
A normally liquid petroleum distillate fuel composition comprising: a major amount of petroleum fuel and 0.001 to 0.5 wt. % of bis-oxazoline of a molar proportion of a hydrocarbon-substituted C 4 -C 10 dicarboxylic acid material selected from the group consisting of dicarboxylic acid, ester and anhydrides thereof, having more than 50 carbon atoms in said hydrocarbon substituent; reacted with about two molar proportions of a 2,2-disubstituted-2-amino-1-alkanol having 2 to 3 hydroxy groups and containing a total of 4 to 8 carbons of the formula: ##STR7## wherein X is alkyl or hydroxy alkyl, said alkyl groups having 1 to 3 carbon atoms, and at least one of said X is a hydroxy alkyl group of the structure --(CH 2 ) n OH where n is 1 to 3; at a temperature in the range of about 140° to 240° C. for about 1/2 to 24 hours with the removal of about three molar proportions of water.
Claim 8
Dependent Claim
22 words
A composition according to claim 5 wherein said hydrocarbon substituted dicarboxylic acid material is alkenyl succinic anhydride and said fuel is gasoline.
Claim 9
Dependent Claim
11 words
A composition according to claim 6 wherein said amino-1-alkanol is tris-(hydroxymethyl)aminomethane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |