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US4253975A
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Aqueous lubricants containing metal hydrocarbyl dithiophosphates
Assignee: Mobil Oil AS
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Filing: 1979-08-27
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Granted: 1981-03-03
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Expires: 1999-08-27
Abstract
Abstract Lubricating oils, which in aqueous media are useful hydraulic fluids and the like, contain a metal hydrocarbyl dithiophosphate and a system of other additives which solubilize the dithiophosphates in the aqueous oils.
Inventors
- 👤 Derek A. Law
- 👤 Robert H. Davis
- 👤 Harry J. Andress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:54
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M141/00; C10M141/10; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/20; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/047; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
155 words
A product comprising (1) a mixture comprising a dihydrocarbyl dithiophosphate and a hydroxyl-containing alkylamine having 2 to 100 carbon atoms or the reaction product made by reacting an alkenylsuccinic anhydride or acid wherein the alkenyl is derived from a mixture of C 16 to C 28 olefins with (A) a hydroxyl-containing tertiary amine having 2 to 100 carbon atoms, or (B) a hydroxypolyetheramine of the formula ##STR3## wherein R and R' are C 8 to C 18 hydrocarbyl groups or R' is a --(CH 2 CH 2 O) y H group and R is a C 8 to C 18 hydrocarbyl group, x is from about 2 to about 50; (2) the reaction product of (B) reacted with polyethylene glycol; (3) the mixture of (1) plus from about 0.5% to about 15% by weight of a C 2 to C 10 monocarboxylic acid, or (4) the mixture of (1) or (2) plus a rosin soap.
Claim 2
Dependent Claim
155 words
A product comprising (1) a mixture comprising a dihydrocarbyl dithiophosphate and a hydroxyl-containing alkylamine having 2 to 100 carbon atoms or the reaction product made by reacting an alkenylsuccinic anhydride or acid wherein the alkenyl is derived from a mixture of C 16 to C 28 olefins with (A) a hydroxyl-containing tertiary amine having 2 to 100 carbon atoms, or (B) a hydroxypolyetheramine of the formula ##STR3## wherein R and R' are C 8 to C 18 hydrocarbyl groups or R' is a --(CH 2 CH 2 O) y H group and R is a C 8 to C 18 hydrocarbyl group, x is from about 2 to about 50; (2) the reaction product of (B) reacted with polyethylene glycol; (3) the mixture of (1) plus from about 0.5% to about 15% by weight of a C 2 to C 10 monocarboxylic acid, or (4) the mixture of (1) or (2) plus a rosin soap.
Claim 3
Dependent Claim
10 words
The composition of claim 1 wherein the alkylamine is triethanolamine.
Claim 4
Dependent Claim
24 words
The composition of claim 1 wherein the hydroxypolyetheramine is a C 16 to C 18 primary amine reacted with 5 moles of ethylene oxide.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein the polyethylene glycol has a molecular weight of 600.
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein the rosin soap is the potassium salt of rosin acid.
Claim 7
Dependent Claim
13 words
The composition of claim 4 wherein the rosin acid is predominantly abietic acid.
Claim 8
Dependent Claim
17 words
The composition of claim 1 wherein the mixture of olefins fall within Table 1 of the specification.
Claim 9
Dependent Claim
12 words
The composition of claim 1 wherein the monocarboxylic acid is caprylic acid.
Claim 10
Dependent Claim
13 words
The composition of claim 1 wherein the dihydrocarbyl dithiophosphate is zinc dibutyl dithiophosphate.
Claim 11
Dependent Claim
12 words
The composition of claim 3 wherein the hydroxypolyetheramine is a polyoxyethylene soyamine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |