US4290902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxymolybdenum dialkyldithiophosphates and lubricants containing same
Assignee: Afton Chemical Additives Corp
•
Filing: 1979-12-03
•
Granted: 1981-09-22
•
Expires: 1999-12-03
Abstract
Abstract This specification relates to novel oxymolybdenum dialkyldithiophosphates having the generic formula [(RO) 2 PS 2 ] 2 Mo 2 O 4 , wherein R is a hydrocarbyl group having 1 to 30 carbon atoms. It also relates to the use of these compounds in lubricants as extreme pressure, antiwear, and oxidation-inhibiting additives.
Inventors
- 👤 Stephen A. Levine
- 👤 William R. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:32
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/17; 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: 27
Claim 1
Independent Claim
33 words
A compound of the formula: [(RO).sub.2 PS.sub.2 ].sub.2 Mo.sub.2 O.sub.4 wherein R is a hydrocarbyl radical having from 1 to 30 carbon atoms, and containing from about 11.7% to about 20.0% of molybdenum.
Claim 2
Dependent Claim
33 words
A compound of the formula: [(RO).sub.2 PS.sub.2 ].sub.2 Mo.sub.2 O.sub.4 wherein R is a hydrocarbyl radical having from 1 to 30 carbon atoms, and containing from about 11.7% to about 20.0% of molybdenum.
Claim 3
Dependent Claim
8 words
The compound of claim 1, being oxymolybdenum di-(n-butyl)phosphorodithioate.
Claim 4
Dependent Claim
8 words
The compound of claim 1, being oxymolybdenum di-(2-ethylhexyl)phosphorodithioate.
Claim 5
Dependent Claim
12 words
The compound of claim 1, wherein R ranges from 8 to 20.
Claim 6
Dependent Claim
8 words
The compound of claim 1, being oxymolybdenum diisopropylphosphorodithioate.
Claim 7
Dependent Claim
8 words
The compound of claim 1, being oxymolybdenum dinonylphosphorodithioate.
Claim 8
Dependent Claim
8 words
The compound of claim 1, being oxymolybdenum di-(n-amyl)phosphorodithioate.
Claim 9
Dependent Claim
8 words
The compound of claim 1, being oxymolybdenum didecylphosphorodithioate.
Claim 10
Dependent Claim
73 words
A process of forming a molybdenum-containing compound comprising treating an ammonium or alkali metal molybdate with more than the stoichiometric amount of a concentrated hydrohalic acid required to simply acidify the molybdate salts, at a temperature ranging from ambient to 80° C.; then, adding not more than two moles of dialkyl phosphorodithioic acid for each mole of molybdenum in the molybdate reactant; refluxing the reaction mixture and removing the water of reaction azeotropically.
Claim 11
Dependent Claim
73 words
A process of forming a molybdenum-containing compound comprising treating an ammonium or alkali metal molybdate with more than the stoichiometric amount of a concentrated hydrohalic acid required to simply acidify the molybdate salts, at a temperature ranging from ambient to 80° C.; then, adding not more than two moles of dialkyl phosphorodithioic acid for each mole of molybdenum in the molybdate reactant; refluxing the reaction mixture and removing the water of reaction azeotropically.
Claim 12
Dependent Claim
29 words
The process of claim 9, wherein said hydraholic acid is hydrochloric acid and one mole of dialkyl phosphorodithioic acid is added for each mole of molybdenum in said reactant.
Claim 13
Dependent Claim
41 words
A composition comprising a lubricating oil or grease containing as an additive with antiwear and extreme pressure properties a compound of the formula: [(RO).sub.2 PS.sub.2 ].sub.2 Mo.sub.2 O.sub.4 where R is a hydrocarbyl radical having from 1 to 30 carbon atoms.
Claim 14
Dependent Claim
41 words
A composition comprising a lubricating oil or grease containing as an additive with antiwear and extreme pressure properties a compound of the formula: [(RO).sub.2 PS.sub.2 ].sub.2 Mo.sub.2 O.sub.4 where R is a hydrocarbyl radical having from 1 to 30 carbon atoms.
Claim 15
Dependent Claim
12 words
The composition of claim 11 wherein R ranges from 8 to 20.
Claim 16
Dependent Claim
16 words
The composition of claim 11 containing from 0.01 to 20.0 percent by weight of said additive.
Claim 17
Dependent Claim
16 words
The composition of claim 11, containing from 0.03 to 10 percent by weight of said additive.
Claim 18
Dependent Claim
15 words
The composition of claim 11, containing from 0.03 to 0.18 percent by weight of molybdenum.
Claim 19
Dependent Claim
8 words
The composition of claim 11, containing oxymolybdenum di-(n-butyl)phosphorodithioate.
Claim 20
Dependent Claim
8 words
The composition of claim 11, containing oxymolybdenum di(2-ethylhexyl)phosphorodithioate.
Claim 21
Dependent Claim
8 words
The composition of claim 11, containing oxymolybdenum diisopropylphosphorodithioate.
Claim 22
Dependent Claim
8 words
The composition of claim 11, containing oxymolbydenum dinonylphosphorodithioate.
Claim 23
Dependent Claim
8 words
The composition of claim 11, containing oxymolybdenum di(n-amyl)phosphorodithioate.
Claim 24
Dependent Claim
8 words
The composition of claim 11, containing oxymolybdenum didecylphosphorodithioate.
Claim 25
Dependent Claim
71 words
A molybdenum-containing compound prepared by the process comprising treating an ammonium or alkali metal molybdate with more than the stoichiometric amount of a concentrated hydrohalic acid required to simply acidity said molybdate at a temperature ranging from ambient to 80° C.; then adding not more than two moles of dialkyl phosphorodithioic acid for each mole of molybdenum in said molybdate reactant; refluxing the reaction mixture and removing the water of reaction.
Claim 26
Dependent Claim
71 words
A molybdenum-containing compound prepared by the process comprising treating an ammonium or alkali metal molybdate with more than the stoichiometric amount of a concentrated hydrohalic acid required to simply acidity said molybdate at a temperature ranging from ambient to 80° C.; then adding not more than two moles of dialkyl phosphorodithioic acid for each mole of molybdenum in said molybdate reactant; refluxing the reaction mixture and removing the water of reaction.
Claim 27
Dependent Claim
22 words
The compound of claim 22 prepared by adding one mole of dialkyl phosphorodithioic acid for each mole of molybdenum in said reactant.
References Cited (Backward Citations)
US3219676A
Cited
US3402188A
Cited
US3446735A
Cited
US3400140A
Cited
US3423316A
Cited
US3562159A
Cited
US3840463A
Cited
US3925213A
Cited
US3888776A
Cited
US4208292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |