US4263015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust inhibitor and oil composition containing same
Assignee: Texaco Inc
•
Filing: 1978-09-11
•
Granted: 1981-04-21
•
Expires: 1998-09-11
Abstract
Abstract A rust inhibitor comprising the reaction product of a hydrocarbylsuccinic anhydride in which the hydrocarbyl radical has from about 6 to 30 carbon atoms and an aminotriazole is provided. The rust inhibitor is effective in motor fuel and lubricating oil compositions.
Inventors
- 👤 Rodney L. Sung
- 👤 Jerzy J. Bialy
- 👤 Peter Dorn
- 👤 William P. Cullen
- 👤 John W. Nebzydoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:28
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C07; C07D; C07D249/00; C07D249/02; C07D249/08; C07D249/10; C07D249/14; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/44; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
101 words
A motor fuel composition comprising a mixture of hydrocarbons in the gasoline boiling range containing a minor rust inhibiting amount of the reaction product of a hydrocarbylsuccinic anhydride and an aminotriazole, said reaction product being obtained by reacting from 0.75 to 1.5 moles of said aminotriazole per mole of said hydrocarbylsuccinic anhydride at a temperature in the range from about 20° to 150° C., said hydrocarbyl succinic anhydride being represented by the formula: ##STR3## in which R is a monovalent aliphatic hydrocarbon radical having from about 6 to 30 carbon atoms and said amino triazole is represented by the formula: ##STR4##
Claim 2
Dependent Claim
101 words
A motor fuel composition comprising a mixture of hydrocarbons in the gasoline boiling range containing a minor rust inhibiting amount of the reaction product of a hydrocarbylsuccinic anhydride and an aminotriazole, said reaction product being obtained by reacting from 0.75 to 1.5 moles of said aminotriazole per mole of said hydrocarbylsuccinic anhydride at a temperature in the range from about 20° to 150° C., said hydrocarbyl succinic anhydride being represented by the formula: ##STR3## in which R is a monovalent aliphatic hydrocarbon radical having from about 6 to 30 carbon atoms and said amino triazole is represented by the formula: ##STR4##
Claim 3
Dependent Claim
29 words
A motor fuel composition according to claim 1 in which said hydrocarbylsuccinic anhydride is an alkenylsuccinic anhydride in which the alkenyl radical has from 12 to 24 carbon atoms.
Claim 4
Dependent Claim
17 words
A motor fuel composition according to claim 1 in which said hydrocarbylsuccinic anhydride is tetrapropenyl succinic anhydride.
Claim 5
Dependent Claim
14 words
A motor fuel composition according to claim 1 in which said aminotriazole is 3-amino-1,2,4-triazole.
Claim 6
Dependent Claim
23 words
A motor fuel composition according to claim 1 in which said reaction product is obtained by reacting approximately equimolar amounts of said reactants.
Claim 7
Dependent Claim
24 words
A motor fuel composition according to claim 1 in which said mixture of hydrocarbons boils in the range from about 85° to 450° F.
Claim 8
Dependent Claim
20 words
A motor fuel composition according to claim 1 containing from about 0.005 to 0.2 weight percent of said reaction product.
Claim 9
Dependent Claim
83 words
A novel composition comprising the reaction product of a hydrocarbylsuccinic anhydride and an aminotriazole, said reaction product being obtained by reacting from 0.75 to 1.5 moles of said aminotriazole per mole of said hydrocarbylsuccinic anhydride at a temperature in the range from about 20° to 150° C., said hydrocarbyl succinic anhydride being represented by the formula: ##STR5## in which R is a monovalent aliphatic hydrocarbon radical having from about 6 to 30 carbon atoms and said aminotriazole is represented by the formula: ##STR6##
Claim 10
Dependent Claim
83 words
A novel composition comprising the reaction product of a hydrocarbylsuccinic anhydride and an aminotriazole, said reaction product being obtained by reacting from 0.75 to 1.5 moles of said aminotriazole per mole of said hydrocarbylsuccinic anhydride at a temperature in the range from about 20° to 150° C., said hydrocarbyl succinic anhydride being represented by the formula: ##STR5## in which R is a monovalent aliphatic hydrocarbon radical having from about 6 to 30 carbon atoms and said aminotriazole is represented by the formula: ##STR6##
Claim 11
Dependent Claim
27 words
A composition according to claim 8 in which said hydrocarbylsuccinic anhydride is an alkenylsuccinic anhydride in which the alkenyl radical has from 12 to 24 carbon atoms.
Claim 12
Dependent Claim
15 words
A composition according to claim 8 in which said hydrocarbylsuccinic anhydride is tetrapropenyl succinic anhydride.
Claim 13
Dependent Claim
12 words
A composition according to claim 8 in which said aminotriazole is 3-amino-1,2,4-triazole.
Claim 14
Dependent Claim
15 words
A composition according to claim 8 obtained by reacting approximately equimolar amounts of said reactants.
Claim 15
Dependent Claim
17 words
An oil concentrate containing from about 0.001 to 50 weight percent of the composition of claim 8.
Claim 16
Dependent Claim
18 words
A motor fuel composition according to claim 1 in which said reaction product has a succinimide functional group.
Claim 17
Dependent Claim
16 words
A composition according to claim 8 in which said reaction product has a succinimide functional group.
References Cited (Backward Citations)
US3219666A
Cited
US3272746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |