US4410703A
Expired / Lapsed
US
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Substituted dimercapto thiadiazoles and lubricant compositions containing same
Assignee: Mobil Oil AS
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Filing: 1981-08-10
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Granted: 1983-10-18
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Expires: 2001-08-10
Abstract
Abstract Lubricants are stabilized against wear and corrosion by adding an additive amount of a novel substituted thiadiazole. These are derived from 2,5-dimercapto-1,3,4-thiadiazole and other moieties, as for example, an isocyanate moiety.
Inventors
- 👤 Abraham O. M. Okorodudu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:58
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6536; C07F9/6539; C07F9/65392; C07F9/65395; C10; C10M; C10M135/00; C10M135/32; C10M135/36; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
31 words
A compound of the formula ##STR28## wherein R 2 is an alkenylsuccinic acid group of the formula ##STR29## wherein R 5 is an alkenyl group containing 15 to 200 carbon atoms.
Claim 2
Dependent Claim
31 words
A compound of the formula ##STR28## wherein R 2 is an alkenylsuccinic acid group of the formula ##STR29## wherein R 5 is an alkenyl group containing 15 to 200 carbon atoms.
Claim 3
Dependent Claim
6 words
A compound having the formula ##STR30##
Claim 4
Dependent Claim
6 words
A compound having the formula ##STR30##
Claim 5
Dependent Claim
6 words
A compound having the formula ##STR31##
Claim 6
Dependent Claim
6 words
A compound having the formula ##STR31##
Claim 7
Dependent Claim
24 words
The compound of claim 1 wherein R 2 is ##STR32## wherein PB is a polybutenyl group having a number average molecular weight of 2300.
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) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |