Patent US4212754A successfully refreshed from Google Patents.
US4212754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chelate detergent and antiwear additive for lubricants derived from hydroxyalkylated benzotriazoles
Assignee: Mobil Oil AS
•
Filing: 1979-04-23
•
Granted: 1980-07-15
•
Expires: 1999-04-23
Abstract
Abstract There are provided complexes of metal salts prepared by (1) reacting a benzotriazole with a monoepoxide to form a hydroxyalkylbenzotriazole, (2) reacting the hydroxyalkylbenzotriazole with an alkenylsuccinic anhydride to form a monoester, and (3) converting the monoester to the salt of a metal which can form Werner complexes and complexing with a ligand containing amine, hydroxyl, oxazoline, or imidazoline groups to form a chelate. These chelates impart detergent and antiwear properties to lubricants.
Inventors
- 👤 Sheldon Chibnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:49
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10M; C10M159/00; C10M159/12; C10M159/18; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2227/00; C10M2227/09; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
122 words
Chelates prepared by (1) reacting in a 1:1 molar ratio a benzotriazole reactant with a monoepoxide at a temperature between about 25° C. and about 200° C. for between about one hour and about 24 hours to form a mixture of 1- and 2-hydroxyalkylbenzotriazoles, (2) esterifying said mixture or one of the isomers thereof with alkenylsuccinic anhydride at a temperature between about 40° C. and about 130° C. for between about 0.5 hours and about 8 hours to form a monoester, (3) converting said monoester to a salt of a metal selected from Groups IB, IIB, IVB, and VII of the Periodic Table, and (4) complexing said salt with a ligand containing amine, hydroxyl, oxazoline, or imidazoline groups to form a chelate.
Claim 2
Dependent Claim
122 words
Chelates prepared by (1) reacting in a 1:1 molar ratio a benzotriazole reactant with a monoepoxide at a temperature between about 25° C. and about 200° C. for between about one hour and about 24 hours to form a mixture of 1- and 2-hydroxyalkylbenzotriazoles, (2) esterifying said mixture or one of the isomers thereof with alkenylsuccinic anhydride at a temperature between about 40° C. and about 130° C. for between about 0.5 hours and about 8 hours to form a monoester, (3) converting said monoester to a salt of a metal selected from Groups IB, IIB, IVB, and VII of the Periodic Table, and (4) complexing said salt with a ligand containing amine, hydroxyl, oxazoline, or imidazoline groups to form a chelate.
Claim 3
Dependent Claim
59 words
A chelate of claim 1, wherein said benzotriazole reactant is benzotriazole, said monoepoxide is propylene oxide, said hydroxyalkylbenzotriazole is hydroxypropylbenzotriazole, said alkenylsuccinic anhydride is polybutenylsuccinic anhydride in which the polybutene has a molecular weight of about 500, said metal is zinc, and ligand is a polybutenylsuccinimide prepared from two moles 1300 molecular weight polybutenylsuccinic anhydride and one mole tetrathylenepentamine.
Claim 4
Dependent Claim
10 words
A chelate of claim 2, wherein the isomer is 1-hydroxypropylbenzotriazole.
Claim 5
Dependent Claim
10 words
A chelate of claim 2, wherein the isomer is 2-hydroxypropylbenzotriazole.
Claim 6
Dependent Claim
16 words
A chelate of claim 2, wherein said benzotriazole reactant is tolyltriazole and said hydroxypropylbenzotriazole is hydroxypropyltolyltriazole.
Claim 7
Dependent Claim
13 words
A chelate of claim 2, wherein said esterifying alkenylsuccinic anhydride is dodecenylsuccinic anhydride.
Claim 8
Dependent Claim
29 words
A composition comprising a major proportion of a lubricating oil or a hydrocarbon fuel and an amount sufficient to impart detergency properties thereto of a chelate of claim 1.
Claim 9
Dependent Claim
29 words
A composition comprising a major proportion of a lubricating oil or a hydrocarbon fuel and an amount sufficient to impart detergency properties thereto of a chelate of claim 2.
Claim 10
Dependent Claim
29 words
A composition comprising a major proportion of a lubricating oil or a hydrocarbon fuel and an amount sufficient to impart detergency properties thereto of a chelate of claim 3.
Claim 11
Dependent Claim
29 words
A composition comprising a major proportion of a lubricating oil or a hydrocarbon fuel and an amount sufficient to impart detergency properties thereto of a chelate of claim 4.
Claim 12
Dependent Claim
29 words
A composition comprising a major proportion of a lubricating oil or a hydrocarbon fuel and an amount sufficient to impart detergency properties thereto of a chelate of claim 5.
Claim 13
Dependent Claim
29 words
A composition comprising a major proportion of a lubricating oil or a hydrocarbon fuel and an amount sufficient to impart detergency properties thereto of a chelate of claim 6.
References Cited (Backward Citations)
US2628942A
Cited
US3652616A
Cited
US3884932A
Cited
US3897351A
Cited
US3945933A
Cited
US4093614A
Cited
US4035309A
Cited
US4011167A
Cited
US4144180A
Cited
US4153564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |