Patent US4045168A successfully refreshed from Google Patents.
Patent US4584114A successfully refreshed from Google Patents.
US4584114A
Expired / Lapsed
US
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Multifunctional lubricant additives and compositions thereof
Assignee: Mobil Oil AS
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Filing: 1982-12-20
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Granted: 1986-04-22
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Expires: 2002-12-20
Abstract
Abstract Mercaptothiadiazole adducts of unsaturated esters such as jojoba oil or pentaerythritol tetraoleate are highly effective multifunctional friction reducing and copper strip passivating additives for various lubricants.
Inventors
- 👤 Robert M. Gemmill
- 👤 Andrew G. Horodysky
- 👤 Phillip S. Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:16
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07D285/135; C07D497/00; C07D497/02; C07D497/10; C07D513/00; C07D513/02; C07D513/10; C10; C10M; C10M135/00; C10M135/32; C10M135/36; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A lubricant composition comprising a major proportion of an oil of lubricating viscosity or grease prepared therefrom and a minor proportion sufficient to impart friction reducing and anti-corrosion properties to said composition of an adduct of an unsaturated ester selected from the group consisting of jojoba oil, oleyl oleate, and pentaerythritol tetraoleate and a mercaptothiadiazole, in a molar ratio of ester to mercaptothiadiazole of from about 10:1 to about 1:2 and at a temperature of from about 160° C. to about 200° C. wherein said mercaptothiadiazole has the general formulas: ##STR6## where x is 1 to 3, R is H or is alkyl, alkenyl, aralkyl or alkaryl of from 1 to about 50 carbon atoms.
Claim 2
Dependent Claim
115 words
A lubricant composition comprising a major proportion of an oil of lubricating viscosity or grease prepared therefrom and a minor proportion sufficient to impart friction reducing and anti-corrosion properties to said composition of an adduct of an unsaturated ester selected from the group consisting of jojoba oil, oleyl oleate, and pentaerythritol tetraoleate and a mercaptothiadiazole, in a molar ratio of ester to mercaptothiadiazole of from about 10:1 to about 1:2 and at a temperature of from about 160° C. to about 200° C. wherein said mercaptothiadiazole has the general formulas: ##STR6## where x is 1 to 3, R is H or is alkyl, alkenyl, aralkyl or alkaryl of from 1 to about 50 carbon atoms.
Claim 3
Dependent Claim
13 words
The lubricant composition of claim 1 where said unsaturated ester is jojoba oil.
Claim 4
Dependent Claim
13 words
The lubricant composition of claim 1 where said unsaturated ester is oleyl oleate.
Claim 5
Dependent Claim
13 words
The lubricant composition of claim 1 where said unsaturated ester is pentaerythritol tetraoleate.
Claim 6
Dependent Claim
83 words
An adduct prepared by reacting an unsaturated ester selected from the group consisting of jojoba oil, oleyl oleate and pentaerythritol tetraoleate and a mercaptothiadiazole, in a molar ratio of ester to mercaptothiadiazole of from about 10:1 to about 1:2 and at a temperature of from about 160° C. to about 200° C. wherein said mercaptothiadiazole has the general formulas: ##STR7## where x is 1 to 3; R is H or is alkyl, alkenyl, aralkyl or alkaryl of from 1 to about 50 atoms.
Claim 7
Dependent Claim
83 words
An adduct prepared by reacting an unsaturated ester selected from the group consisting of jojoba oil, oleyl oleate and pentaerythritol tetraoleate and a mercaptothiadiazole, in a molar ratio of ester to mercaptothiadiazole of from about 10:1 to about 1:2 and at a temperature of from about 160° C. to about 200° C. wherein said mercaptothiadiazole has the general formulas: ##STR7## where x is 1 to 3; R is H or is alkyl, alkenyl, aralkyl or alkaryl of from 1 to about 50 atoms.
Claim 8
Dependent Claim
16 words
The adduct of claim 5 wherein said ester is jojoba oil and said mercaptothiadiazole is 2,5-dimercapto-1,3-4-thiadiazole.
Claim 9
Dependent Claim
16 words
The adduct of claim 5 wherein said ester is oleyl oleate and said mercaptothiadiazole is 2,5-dimercapto-1,3-4-thiadiazole.
Claim 10
Dependent Claim
16 words
The adduct of claim 5 wherein said ester is pentaerythritol tetraoleate and said mercaptothiadiazole is 2,5-dimercapto-1,3-4-thiadiazole.
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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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |