Compositions – Electrolytes for electrical devices
Patent
1988-04-20
1989-08-01
Howard, Jacqueline V.
Compositions
Electrolytes for electrical devices
252 334, 252 52R, 252 496, 252 497, 252 515A, 252 50, 252 56D, 252 56R, C10M14514, C10M15710
Patent
active
048531391
ABSTRACT:
A lubricating oil composition having improved temperature characteristics is disclosed, containing: (A) a base oil having a kinematic viscosity at 100.degree. C. of 1.5 to 50 cSt, a pour point of -25.degree. C. or lower and a viscosity index of at least 60; (B) an ethylene-.alpha.-olefin copolymer having a number average molecular weight of 1,000 to 8,000; and (C) at least one additive selected from an extreme pressure agent, an anti-wear agent, an oiliness agent and a detergent dispersant. The present composition has a high viscosity index and exhibits good temperature characteristics, particularly low temperature characteristics, and further is excellent in shear stability, extreme pressure properties, wear resistance, detergency and so on. Thus it is useful as a gear oil for cars or industrial machines, an internal combustion engine oil, an automatic transmission oil and so on.
REFERENCES:
patent: 3175972 (1965-03-01), Mitacek et al.
patent: 3598738 (1971-08-01), Biswell et al.
patent: 4088589 (1978-05-01), Rossi et al.
patent: 4274973 (1981-06-01), Stanton et al.
patent: 4611031 (1986-09-01), Galluccio et al.
Howard Jacqueline V.
Idemitsu Kosan Co. Ltd.
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