US4428861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molybdenum IV compounds, process for preparation thereof and lubricant compositions containing same
Assignee: Mobil Oil AS
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Filing: 1981-10-23
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Granted: 1984-01-31
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Expires: 2001-10-23
Abstract
Abstract A novel process for reducing Mo(V) or Mo(VI) dialkyldithiophosphates to Mo(IV) dialkyldithiophosphates with H2S is provided. Homologues higher than the ethyl compound are oil soluble and novel. Lubricant compositions containing same provide reduced wear and friction.
Inventors
- 👤 Robert F. Bridger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:29
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1654; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/12; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
66 words
A process for preparing bis(O,O-dialkylphosphorodithioato)oxomolybdenum(IV) compounds comprising reacting with H 2 S a molybdenum(V) dithiophosphate or molybdenum(VI) dithiophosphate having the following respective general formulae: [(RO).sub.2 PS.sub.2 ].sub.4 Mo.sub.2 O.sub.3 and [(RO).sub.2 PS.sub.2 ].sub.2 MoO.sub.2 where R is a hydrocarbyl group having from 1 to 36 carbon atoms selected from alkyl, cycloalkyl, aryl or aralkyl and where the reaction is carried out in the presence of chloroform.
Claim 2
Dependent Claim
66 words
A process for preparing bis(O,O-dialkylphosphorodithioato)oxomolybdenum(IV) compounds comprising reacting with H 2 S a molybdenum(V) dithiophosphate or molybdenum(VI) dithiophosphate having the following respective general formulae: [(RO).sub.2 PS.sub.2 ].sub.4 Mo.sub.2 O.sub.3 and [(RO).sub.2 PS.sub.2 ].sub.2 MoO.sub.2 where R is a hydrocarbyl group having from 1 to 36 carbon atoms selected from alkyl, cycloalkyl, aryl or aralkyl and where the reaction is carried out in the presence of chloroform.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein (RO) 2 PS 2 is a dialkylphorodithioato ligand.
Claim 4
Dependent Claim
17 words
The process of claim 2 wherein the alkyl group contains from 1 to about 30 carbon atoms.
Claim 5
Dependent Claim
9 words
The process of claim 2 wherein R is methylpropyl.
Claim 6
Dependent Claim
9 words
The process of claim 2 wherein R is isopropyl.
Claim 7
Dependent Claim
9 words
The process of claim 2 wherein R is 2-ethylhexyl.
Claim 8
Dependent Claim
9 words
The process of claim 2 wherein R is n-butyl.
Claim 9
Dependent Claim
40 words
A lubricant composition comprising a major amount of an oil of lubricating viscosity or a grease formulated therefrom and a minor amount sufficient to provide antiwear and friction reducing properties thereto of a compound prepared as described in claim 1.
Claim 10
Dependent Claim
15 words
The lubricant composition of claim 8 wherein (RO) 2 PS 2 is a dialkylphosphorodithioato ligand.
Claim 11
Dependent Claim
20 words
The lubricant composition of claim 9 wherein the alkyl group of said ligand contains from 1 to 30 carbon atoms.
Claim 12
Dependent Claim
10 words
The lubricant composition of claim 9 wherein R is methylpropyl.
Claim 13
Dependent Claim
10 words
The lubricant composition of claim 9 wherein R is isopropyl.
Claim 14
Dependent Claim
10 words
The lubricant composition of claim 9 wherein R is 2-ethylhexyl.
Claim 15
Dependent Claim
68 words
A compound prepared by reacting with H 2 S in the presence of chloroform a molybdenum(V) dithiophosphate or molybdenum(VI) dithiophosphate having the following respective general formulae: [(RO).sub.2 PS.sub.2 ].sub.4 Mo.sub.2 O.sub.3 and [(RO).sub.2 PS.sub.2 ].sub.2 MoO.sub.2 where R is a hydrocarbyl group having from 1 to 36 carbon atoms selected from alkyl, cycloalkyl, aryl or aralkyl and where the reaction is carried out in the presence of chloroform.
Claim 16
Dependent Claim
68 words
A compound prepared by reacting with H 2 S in the presence of chloroform a molybdenum(V) dithiophosphate or molybdenum(VI) dithiophosphate having the following respective general formulae: [(RO).sub.2 PS.sub.2 ].sub.4 Mo.sub.2 O.sub.3 and [(RO).sub.2 PS.sub.2 ].sub.2 MoO.sub.2 where R is a hydrocarbyl group having from 1 to 36 carbon atoms selected from alkyl, cycloalkyl, aryl or aralkyl and where the reaction is carried out in the presence of chloroform.
Claim 17
Dependent Claim
14 words
The compound of claim 14 wherein (RO) 2 PS 2 is a dialkylphosphorodithioato ligand.
Claim 18
Dependent Claim
9 words
The compound of claim 15 wherein R is methylpropyl.
Claim 19
Dependent Claim
9 words
The compound of claim 15 wherein R is isopropyl.
Claim 20
Dependent Claim
9 words
The compound of claim 15 wherein R is 2-ethylhexyl.
Claim 21
Dependent Claim
9 words
The compound of claim 15 wherein R is n-butyl.
Claim 22
Dependent Claim
9 words
The process of claim 2 where R is 2,2-dimethylpropyl.
Claim 23
Dependent Claim
10 words
The lubricant composition of claim 9 wherein R is 2,2-dimethylpropyl.
Claim 24
Dependent Claim
9 words
The compound of claim 15 wherein R is 2,2-dimethylpropyl.
Claim 25
Dependent Claim
10 words
The lubricant composition of claim 9 wherein R is n-butyl.
References Cited (Backward Citations)
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Cited
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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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |