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

C - Chemistry, Metallurgy

10

M

C10M 111/04 (2006.01) C10M 101/00 (2006.01) C10M 107/02 (2006.01)

Patent

CA 2700631

A gear oil composition is provided. The composition comprises a synergistic blend of mineral oil base stock and polyalphaolefin (PAO) base stock for the oil composition to have a traction coefficient at a slide to roll ratio of 40 percent at 15 mm2/s. of 0.030 or less and a pressure viscosity coefficient of at least 16.0 at 80 °C, 20 Newton load, and 1.1 m/s rolling speed. In one embodiment, the synergistic amount of PAO base stock ranges from 5 to 48 wt. % based on the total weight of the gear oil composition.

La présente invention concerne une composition d'huile pour engrenage qui comprend un mélange d'une base d'huile minérale et d'une base de polyalphaoléfine (PAO) pour la composition d'huile afin d'avoir un coefficient de traction à un taux de glissement sur roulement de 40 pour cent à 15 mm2/s de 0,030 ou moins et un coefficient de viscosité/pression d'au moins 16,0 à 80 °C, une charge de 20 Newton et une vitesse de roulement de 1,1 m/s. Dans un mode de réalisation, la quantité synergique de la base de PAO va de 5 à 48 % en poids par rapport au poids total de la composition d'huile pour engrenage.

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