US4303539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil additives containing a thiocarbamyl moiety
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1980-12-19
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Granted: 1981-12-01
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Expires: 2000-12-19
Abstract
Abstract Thiocarbamyl derivatives, including thioureas and thiocarbamic esters derived from the reaction of an alkenyl isothiocyanate with an amine and alcohol or thio, respectively, have utility as an additive for hydrocarbons, particularly fuels and mineral lubricating oils whereby enhanced anticorrosion, oxidation inhibition and/or dispersancy activity is imparted to said hydrocarbons.
Inventors
- 👤 Won R. Song
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:31
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/125; C07D295/13; C07C; C07C335/00; C07C335/04; C07C335/06; C07C335/10; C07C335/12; C07D257/00; C07D257/02; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10M; C10M135/00; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/066; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/09; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2221/00; C10M2221/04; C10M2221/041; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/06; C10N2040/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
54 words
A composition comprising a lubricating oil containing 0.01 to 20 weight percent of a thiocarbamyl derivative of an allylicly unsaturated polyisobutenyl isothiocyanate, the polyisobutenyl having a number average molecular weight of 1,200 to 5,000, said derivative being formed by reaction of said polyisobutenyl isothiocyanate with an alkylene polyamine having 2 to 60 carbon atoms.
Claim 2
Dependent Claim
54 words
A composition comprising a lubricating oil containing 0.01 to 20 weight percent of a thiocarbamyl derivative of an allylicly unsaturated polyisobutenyl isothiocyanate, the polyisobutenyl having a number average molecular weight of 1,200 to 5,000, said derivative being formed by reaction of said polyisobutenyl isothiocyanate with an alkylene polyamine having 2 to 60 carbon atoms.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein said alkylene polyamine is an ethylene polyamine having 2 to 4 ethylene groups.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |