US3361668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating compositions containing light-colored and improved group ii metal phosphorodithioates
Assignee: Lubrizol Corp
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Filing: 1965-10-19
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Granted: 1968-01-02
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Wiese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:43
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND FROM ABUT 0.01% TO ABOUT 2.0% BY WEIGHT FO A GROUP II METAL SALTS OF AN O,O''-DIESTER OF PHOSPHORODITHIOIC ACID PREPARED BY (A) FORMING AN IMPROVED O,O''-DIESTER OF PHOSPHORODITHIOIC ACID BY REACTING AT FROM ABOUT 20*C. (1) 1 MOLE OF PHOSPHORUS PENTASULFIDE WITH (2) ABOUT 4 EQUIVALENTS OF A MIXTURE OF (A) FROM ABOUT 95% TO ABOUT 99.95% BY WEIGHT OF A MONOHYDROXY ALCOHOL OR PHENOL (B) FROM ABOUT 3.35% TO ABOUT 5% BY HAVING FROM 1 TO ABOUT 30 CARBON ATOMS AND (B) FROM ABOUT 0.05% TO ABOUT 5% BY WEIGHT OF AN ALKYL AMINE, CYCLOALKYLAMINE OR HETEROCYCLIC AMINE HAVING UP TO ABOUT 20 CARBON ATOMS AND (B) REACTING SAID O,O''-DIESTER OF PHOSPHORODITHIOIC ACID WITH ABOUT AN EQUIVALENT AMOUNT OF A BASIC REACTING GROUP II METAL COMPOUND.
Claim 2
Dependent Claim
141 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND FROM ABUT 0.01% TO ABOUT 2.0% BY WEIGHT FO A GROUP II METAL SALTS OF AN O,O''-DIESTER OF PHOSPHORODITHIOIC ACID PREPARED BY (A) FORMING AN IMPROVED O,O''-DIESTER OF PHOSPHORODITHIOIC ACID BY REACTING AT FROM ABOUT 20*C. (1) 1 MOLE OF PHOSPHORUS PENTASULFIDE WITH (2) ABOUT 4 EQUIVALENTS OF A MIXTURE OF (A) FROM ABOUT 95% TO ABOUT 99.95% BY WEIGHT OF A MONOHYDROXY ALCOHOL OR PHENOL (B) FROM ABOUT 3.35% TO ABOUT 5% BY HAVING FROM 1 TO ABOUT 30 CARBON ATOMS AND (B) FROM ABOUT 0.05% TO ABOUT 5% BY WEIGHT OF AN ALKYL AMINE, CYCLOALKYLAMINE OR HETEROCYCLIC AMINE HAVING UP TO ABOUT 20 CARBON ATOMS AND (B) REACTING SAID O,O''-DIESTER OF PHOSPHORODITHIOIC ACID WITH ABOUT AN EQUIVALENT AMOUNT OF A BASIC REACTING GROUP II METAL COMPOUND.
References Cited (Backward Citations)
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Cited
US2983742A
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US3029268A
Cited
US3267033A
Cited
US3281356A
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US3284548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |