Gear oil compositions, methods of making and using thereof

Details Gear oil compositions, methods of making and using thereof Gear oil compositions, methods of making and using thereof

2011-04-26

2011-04-26

Caldarola, Glenn (Department: 1771)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

C208S018000

Reexamination Certificate

active

07932217

ABSTRACT:
A gear oil composition is provided. The composition comprises a synergistic amount of an isomerized base oil having consecutive numbers of carbon atoms and less than 10 wt % naphthenic carbon by n-d-M for the gear oil composition to have a traction coefficient at 15 mm2/s. of less than 0.030 and a pressure viscosity coefficient of at least 15.0 at 80° C., 20 Newton load, and 1.1 m/s rolling speed. In one embodiment, the sufficient amount of isomerized base oil ranges from 20 to 80 wt. % based on the total weight of the gear oil composition.

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