US4193882A
Expired / Lapsed
US
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Corrosion inhibited lubricant composition
Assignee: Mobil Oil AS
•
Filing: 1978-10-19
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Granted: 1980-03-18
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Expires: 1998-10-19
Abstract
Abstract Lubricant compositions containing, in an amount sufficient to inhibit metal corrosion, the reaction product of oleic acid and 2,5-dimercapto-1,3,4-thiadiazole.
Inventors
- 👤 Robert M. Gemmill, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:08
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C10; C10M; C10M135/00; C10M135/32; C10M135/36; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/028; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2211/00; C10M2211/02; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02; C10M2227/04; C10M2227/08; C10M2227/081; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
39 words
A lubricant composition comprising: a major proportion of a lubricating medium selected from the group consisting of oils of lubricating viscosity and greases thereof; and, in an amount sufficient to inhibit metal corrosion, a compound having the formula: ##STR4##
Claim 2
Dependent Claim
39 words
A lubricant composition comprising: a major proportion of a lubricating medium selected from the group consisting of oils of lubricating viscosity and greases thereof; and, in an amount sufficient to inhibit metal corrosion, a compound having the formula: ##STR4##
Claim 3
Dependent Claim
16 words
A composition as defined in claim 1 wherein said lubricating medium comprises a mineral oil-based composition.
Claim 4
Dependent Claim
16 words
A composition as defined in claim 1, wherein said lubricating medium comprises a synthetic oil-based composition.
Claim 5
Dependent Claim
34 words
A composition as defined in claim 1 wherein said lubricating medium comprises an oil of lubricating viscosity in the range from about 45 SSU at 100° F. to about 6000 SSU at 100° F.
Claim 6
Dependent Claim
34 words
A composition as defined in claim 1 wherein said lubricating medium comprises an oil of lubricating viscosity in the range from about 50 SSU at 210° F. to about 250 SSU at 210° F.
Claim 7
Dependent Claim
25 words
A composition as defined in claim 1 wherein said metal corrosion-inhibiting compound is present in an amount from about 0.1 to about 1.0%, by weight.
Claim 8
Dependent Claim
24 words
A composition as defined in claim 1 wherein said metal corrosion-inhibiting compound is present in an amount from 0.1% to about 0.5%, by weight.
Claim 9
Dependent Claim
27 words
A process which comprises reacting oleic acid and 2,5-dimercapto--1,3,4-thiadiazole at a temperature from about 150° C. to about 200° C. and in a mole ratio of 1:1.
Claim 10
Dependent Claim
27 words
A process which comprises reacting oleic acid and 2,5-dimercapto--1,3,4-thiadiazole at a temperature from about 150° C. to about 200° C. and in a mole ratio of 1:1.
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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) | 1983-03-18 | 1983-09-17 | 1984-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-18 | 1987-09-17 | 1988-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-18 | 1991-09-17 | 1992-03-18 | $7700.00 | Window Closed / Lapsed |