SYNERGISTIC LUBRICANTS WITH REDUCED ELECTRICAL CONDUCTIVITY

    公开(公告)号:US20210122994A1

    公开(公告)日:2021-04-29

    申请号:US16662843

    申请日:2019-10-24

    Abstract: A method of lubricating at least a portion of a powertrain in a vehicle with an electric motor with a functional fluid composition containing greater than 50 wt % of a base oil; and an additive composition prepared by mixing: a) a hydrocarbyl acid phosphate of the formula (I) to provide at least 50 ppmw phosphorus to the functional fluid composition; wherein R is a C1-C6 hydrocarbyl group and R1 is selected from hydrogen and a C1-C6 hydrocarbyl group; b) an amount of one or more calcium-containing detergent(s) sufficient to provide at least 25 ppmw calcium to the functional fluid composition; and c) one or more nitrogen containing dispersants in an amount sufficient to provide greater than 20 ppmw of nitrogen to the functional fluid composition, all based on the total weight of the functional fluid composition. Functional fluid compositions containing the above-mentioned components and lubricating methods are also disclosed herein.

    Synergistic lubricants with reduced electrical conductivity

    公开(公告)号:US11066622B2

    公开(公告)日:2021-07-20

    申请号:US16662843

    申请日:2019-10-24

    Abstract: A method of lubricating at least a portion of a powertrain in a vehicle with an electric motor with a functional fluid composition containing greater than 50 wt % of a base oil; and an additive composition prepared by mixing: a) a hydrocarbyl acid phosphate of the formula (I) to provide at least 50 ppmw phosphorus to the functional fluid composition; wherein R is a C1-C6 hydrocarbyl group and R1 is selected from hydrogen and a C1-C6 hydrocarbyl group; b) an amount of one or more calcium-containing detergent(s) sufficient to provide at least 25 ppmw calcium to the functional fluid composition; and c) one or more nitrogen containing dispersants in an amount sufficient to provide greater than 20 ppmw of nitrogen to the functional fluid composition, all based on the total weight of the functional fluid composition. Functional fluid compositions containing the above-mentioned components and lubricating methods are also disclosed herein.

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