Lubricating oil composition containing a partial ester of a poly

Details Lubricating oil composition containing a partial ester of a poly Lubricating oil composition containing a partial ester of a poly

1991-04-08

1993-12-28

Johnson, Jerry D.

Compositions

Electrolytes for electrical devices

252 486, 252 496, 252 515A, 252 79, C10M12976

Patent

active

052736725

ABSTRACT:
The present invention provides a lubricating oil composition characterized in that the base oil contains (A) from 0.05 to 5% by weight of an ester of alkenyl substituted succinic acid and/or an ester of alkyl substituted succinic acid and (B) from 0.005 to 5% by weight of a fatty acid ester of a polyhydric alcohol. The lubricating oil composition of the present invention has a friction characteristic in which the (coefficient of static friction)/(coefficient of dynamic friction) ratio is small and gives only a small shock by shift change. In addition, the changes in the friction characteristics depending on the oil temperature is small and also the changes in the lapse of time are small. Accordingly, it is fully compatible with the trend toward a compact size of transmissions and the like. Accordingly, the lubricating oil composition of the present invention is very effective as a lubricating oil for automatic transmissions, lubricating oil for the parts having a wet-type clutch or wet-type brake as in tractors and the like, and so on.

REFERENCES:
patent: 2515115 (1947-10-01), Davis et al.
patent: 2561659 (1951-07-01), Rudel et al.
patent: 2603604 (1952-07-01), Ballard et al.
patent: 2683119 (1954-07-01), Smith, Jr. et al.
patent: 2775560 (1956-12-01), Lurton et al.
patent: 2962443 (1960-11-01), Rhodes
patent: 3184408 (1965-05-01), Wilson et al.
patent: 3235499 (1966-02-01), Waldmann
patent: 3381022 (1968-04-01), Le Suer
patent: 3403092 (1968-09-01), Rausch
patent: 3658707 (1972-04-01), Delafield et al.
patent: 3720615 (1973-03-01), Izumi et al.
patent: 3915843 (1975-10-01), Franck et al.
patent: 3933659 (1976-01-01), Lyle et al.
patent: 3962071 (1976-06-01), Itoh et al.
patent: 4209411 (1980-06-01), Winans et al.
patent: 4256593 (1981-03-01), Nozawa
patent: 4304678 (1981-12-01), Schick et al.
patent: 4336149 (1982-06-01), Erdman
patent: 4372839 (1983-02-01), Oleck et al.
patent: 4376036 (1983-03-01), Garwood et al.
patent: 4376056 (1983-03-01), Erdman
patent: 4491527 (1985-01-01), Lange et al.
patent: 4589993 (1986-05-01), Cleveland et al.
patent: 4664822 (1987-05-01), Hunt et al.
patent: 4683069 (1987-07-01), Brewster et al.
patent: 4767551 (1988-08-01), Hunt et al.
patent: 4800029 (1989-01-01), Dasai
patent: 4960542 (1990-10-01), Seiki
patent: 4968452 (1990-11-01), Seiki
patent: 4968453 (1990-11-01), Wada et al.
patent: 5064546 (1991-11-01), Dasai
"Sekiyu Seihin Tenkazai" Sakurai Toshio (author) Aug. 10, 1974 [p. 224, line 24 to p. 225, line 9 from the bottom].

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