US4208292A
Expired / Lapsed
US
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Phosphomolybdate compounds and their use as lubricant additives
Assignee: Mobil Oil AS
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Filing: 1979-01-29
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Granted: 1980-06-17
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Expires: 1999-01-29
Abstract
Abstract The invention provides a phosphomolybdate compound that is useful in lubricants, especially lubricating oils, to reduce friction and to decrease fuel consumption in internal combustion engines. The phosphomolybdates are new compounds obtained at or near room temperature.
Inventors
- 👤 Robert F. Bridger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:24
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2205/00; C10M2205/02; C10M2205/028; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/108; C10M2209/109; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/12; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
23 words
A compound having the formula: ##STR4## wherein R may be the same or different and is a C 3 -C 30 hydrocarbyl group.
Claim 2
Dependent Claim
23 words
A compound having the formula: ##STR4## wherein R may be the same or different and is a C 3 -C 30 hydrocarbyl group.
Claim 3
Dependent Claim
9 words
The compound of claim 1 wherein R is 2-ethylhexyl.
Claim 4
Dependent Claim
9 words
The compound of claim 1 wherein R is butyl.
Claim 5
Dependent Claim
9 words
The compound of claim 1 wherein R is n-butyl.
Claim 6
Dependent Claim
9 words
The compound of claim 1 wherein R is propyl.
Claim 7
Dependent Claim
9 words
The compound of claim 1 wherein R is iso-propyl.
Claim 8
Dependent Claim
22 words
A lubricant composition comprising a major proportion of a lubricant and a minor friction reducing amount of the compound of claim 1.
Claim 9
Dependent Claim
9 words
The composition of claim 7 wherein R is 2-ethylhexyl.
Claim 10
Dependent Claim
9 words
The composition of claim 7 wherein R is butyl.
Claim 11
Dependent Claim
9 words
The composition of claim 7 wherein R is n-butyl.
Claim 12
Dependent Claim
9 words
The composition of claim 7 wherein R is propyl.
Claim 13
Dependent Claim
9 words
The composition of claim 7 wherein R is iso-propyl.
Claim 14
Independent Claim
57 words
A method for reducing fuel consumption in an internal combustion engine by treating the moving surfaces thereof with a composition comprising a major amount of a lubricating oil containing a fuel reducing amount of a compound of the formula: ##STR5## wherein R may be the same or different and is a C 3 -C 30 hydrocarbyl group.
Claim 15
Independent Claim
57 words
A method for reducing fuel consumption in an internal combustion engine by treating the moving surfaces thereof with a composition comprising a major amount of a lubricating oil containing a fuel reducing amount of a compound of the formula: ##STR5## wherein R may be the same or different and is a C 3 -C 30 hydrocarbyl group.
Claim 16
Dependent Claim
9 words
The composition of claim 13 wherein R is 2-ethylhexyl.
Claim 17
Dependent Claim
9 words
The composition of claim 13 wherein R is butyl.
Claim 18
Dependent Claim
9 words
The composition of claim 13 wherein R is n-butyl.
Claim 19
Dependent Claim
9 words
The composition of claim 13 wherein R is propyl.
Claim 20
Dependent Claim
9 words
The composition of claim 13 wherein R is iso-propyl.
Claim 21
Dependent Claim
73 words
A process for preparing a compound of the formula ##STR6## wherein R may be the same or different and is a C 3 -C 30 hydrocarbyl group, comprising the step of reacting a metal molybdate or an ammonium molybdate with a dihydrocarbyl phosphorodithioic acid, the hydrocarbyl being as defined herein, at a temperature of no higher than about 80° C., the molar ratio of said molybdate to said acid being at least 1:2.
Claim 22
Dependent Claim
73 words
A process for preparing a compound of the formula ##STR6## wherein R may be the same or different and is a C 3 -C 30 hydrocarbyl group, comprising the step of reacting a metal molybdate or an ammonium molybdate with a dihydrocarbyl phosphorodithioic acid, the hydrocarbyl being as defined herein, at a temperature of no higher than about 80° C., the molar ratio of said molybdate to said acid being at least 1:2.
Claim 23
Dependent Claim
20 words
The process of claim 19 wherein the hydrocarbyl group is an alkyl, a cycloalkyl, an aryl or an alkaryl group.
Claim 24
Dependent Claim
17 words
The process of claim 19 wherein the temperature is from about 10° C. to about 30° C.
Claim 25
Dependent Claim
9 words
The composition of claim 19 wherein R is 2-ethylhexyl.
Claim 26
Dependent Claim
9 words
The composition of claim 19 wherein R is butyl.
Claim 27
Dependent Claim
9 words
The composition of claim 19 wherein R is n-butyl.
Claim 28
Dependent Claim
9 words
The composition of claim 19 wherein R is propyl.
Claim 29
Dependent Claim
9 words
The composition of claim 19 wherein R is iso-propyl.
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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) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |