US3920562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demulsified extended life functional fluid
Assignee: Chevron USA Inc
•
Filing: 1973-02-05
•
Granted: 1975-11-18
•
Expires: 1993-02-05
Abstract
Abstract Functional fluid lubricating oil compositions are provided which comprise (A) a major amount of an oil of lubricating viscosity, and (B) an effective amount of each of the following: (1) an alkyl succinimide, (2) a Group II metal salt of a dihydrocarbyl dithiophosphoric acid, (3) a hydroxy fatty acid ester of a dihydric or polyhydric alcohol or oil-soluble alkoxylated derivatives thereof, and (4) a Group II metal salt of a hydrocarbyl sulfonic acid. Such lubricating compositions are useful as functional fluids in systems requiring fluid coupling, hydraulic fluid and/or lubrication of relatively moving parts. The lubricating compositions of the invention are particularly useful as the functional fluid in automatic transmissions, particularly in passenger automobiles. In addition, the fluids do not form stable emulsions with water.
Inventors
- 👤 Edward G Foehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:51
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
82 words
A LUBRICATING OIL COMPOSITION WHICH COMPRISES: A. A MAJOR AMOUNT OF AN OIL OF LUBRICATING VISCOSITY, B. A DISPERSANT AMOUNT OF AN ALKENYL SUCCINIMICE OF A POLYALKENYLENE POLYAMIDE, C. AN ANTIOXIDANT AMOUNT OF A GROUP II METAL SALT OF A DIHYDROCARBYL DITHIOPHOSPHORIC ACID, D. A FRICTION MODIFYING AMOUNT OG OF A DIHYDRIC ALCOHOL OR AN OIL-SOLUBLE OXALKYLATED HYDROXY FATTY ACID ESTER OF A DIHYDRIC OR POLYHYDRIC ALCOHOL, AND E. A DETERGENT AMOUNT OF A GROUP 11 METAL SALT OF A HYDROCARBYLSULFONIC ACID.
Claim 2
Dependent Claim
82 words
A LUBRICATING OIL COMPOSITION WHICH COMPRISES: A. A MAJOR AMOUNT OF AN OIL OF LUBRICATING VISCOSITY, B. A DISPERSANT AMOUNT OF AN ALKENYL SUCCINIMICE OF A POLYALKENYLENE POLYAMIDE, C. AN ANTIOXIDANT AMOUNT OF A GROUP II METAL SALT OF A DIHYDROCARBYL DITHIOPHOSPHORIC ACID, D. A FRICTION MODIFYING AMOUNT OG OF A DIHYDRIC ALCOHOL OR AN OIL-SOLUBLE OXALKYLATED HYDROXY FATTY ACID ESTER OF A DIHYDRIC OR POLYHYDRIC ALCOHOL, AND E. A DETERGENT AMOUNT OF A GROUP 11 METAL SALT OF A HYDROCARBYLSULFONIC ACID.
Claim 3
Dependent Claim
72 words
A lubricating oil composition of claim 1 wherein (1) said alkenyl substituent of said succinimide is derived from polyisobutene, (2) said hydrocarbyl groups of said dithiophosphoric acid contain from 4 and 12 carbon atoms, (3) said fatty alkyl group of said hydroxy fatty acid contains from 14 to 20 carbon atoms, and (4) said Group II metal of said Group II metal salt of a hydrocarbylsulfonic acid is magnesium, calcium or barium.
Claim 4
Dependent Claim
10 words
0.75 to 1.0 percent weight of said dithiophosphoric acid salt,
Claim 5
Dependent Claim
10 words
0.75 to 1.0 percent weight of said dithiophosphoric acid salt,
Claim 6
Dependent Claim
11 words
from 0.5 to 1.5 percent weight of said dithiophosphoric acid salt,
Claim 7
Dependent Claim
11 words
from 0.5 to 1.5 percent weight of said dithiophosphoric acid salt,
Claim 8
Dependent Claim
9 words
said dithiophosphoric acid salt has the following formula: II
Claim 9
Dependent Claim
9 words
said dithiophosphoric acid salt has the following formula: II
Claim 10
Dependent Claim
11 words
said hydroxy fatty acid ester has one of the following formulae:
Claim 11
Dependent Claim
11 words
said hydroxy fatty acid ester has one of the following formulae:
Claim 12
Dependent Claim
20 words
from 0.1 to 0.8 percent weight of said hydroxy fatty acid esters or oil-soluble oxyalkylated hydroxy fatty acid esters, and
Claim 13
Dependent Claim
20 words
from 0.1 to 0.8 percent weight of said hydroxy fatty acid esters or oil-soluble oxyalkylated hydroxy fatty acid esters, and
Claim 14
Dependent Claim
19 words
from 0.2 to 0.6 percent of said hydroxy fatty acid esters or oil-soluble oxyalkylated hydroxy fatty acid esters, and
Claim 15
Dependent Claim
19 words
from 0.2 to 0.6 percent of said hydroxy fatty acid esters or oil-soluble oxyalkylated hydroxy fatty acid esters, and
Claim 16
Dependent Claim
16 words
A lubricating oil composition of claim 1 wherein (1) said alkenyl succinimide has the following formula:
Claim 17
Dependent Claim
15 words
from 1.0 to 1.4 percent weight of said Group II metal salt of hydrocarbylsulfonic acid.
Claim 18
Dependent Claim
15 words
from 1.0 to 1.4 percent weight of said Group II metal salt of hydrocarbylsulfonic acid.
Claim 19
Dependent Claim
16 words
from 0.9 to 1.8 percent weight of said Group II metal salt of a hydrocarbylsulfonic acid.
Claim 20
Dependent Claim
16 words
from 0.9 to 1.8 percent weight of said Group II metal salt of a hydrocarbylsulfonic acid.
Claim 21
Dependent Claim
99 words
A lubricating oil composition of claim 3 wherein: a. R1 represents an alkenyl group derived from polyisobutene, b. said alkylene radical contains from 2 to 4 carbon atoms, c. A represents hydrogen, d. n represent 3, 4 or 5, e. R2 and R3 each represent a hydrocarbyl radical containing from 4 to 12 carbon atoms, f. M1 represents zinc, g. R4 represents a hydrocarbyl radical containing 14 to 16 carbon atoms and one site of olefinic unsaturation, h. x represents 1, i. y represents 3, j. z represents 1 to 17, and k. M2 represents magnesium, calcium or barium.
Claim 22
Dependent Claim
13 words
said Group II metal salt of a hydrocarbylsulfonic acid has the following formula:
Claim 23
Dependent Claim
13 words
said Group II metal salt of a hydrocarbylsulfonic acid has the following formula:
Claim 24
Dependent Claim
48 words
A lubricating oil composition of claim 4 wherein: a. said alkylene radical contains two carbon atoms, b. n represents 4, c. R2 and R3 each represent a hydrocarbyl radical containing 8 carbon atoms, d. the group CH3-R4 (OH)x-COO is derived from castor oil, and e. M2 represents calcium.
Claim 25
Dependent Claim
11 words
A lubricating oil composition of claim 5 wherein said composition contains
Claim 26
Dependent Claim
11 words
A lubricating oil composition of claim 6 wherein said composition contains
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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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |