LUBRICATING OIL COMPOSITIONS
    4.
    发明公开

    公开(公告)号:EP3502217A1

    公开(公告)日:2019-06-26

    申请号:EP18199179.5

    申请日:2018-10-08

    IPC分类号: C10M149/12 C10M169/04

    摘要: A lubricating composition comprises a major amount of an oil of lubricating viscosity and 0.01 to 25 percent by weight, based on the weight of the composition, of a poly(2-oxazoline) polymer. The polymer has the repeat unit:

             -N(COR 1 )CH 2 CH 2 -

    wherein the number of repeat units (n) in the polymer is an integer between 4 and 1000, such as between 4 and 500. The polymer carries an inorganic or organic nucleophilic polymerisation terminating group (t), and an initiator group (i) connected to the N atom of a repeat unit, the initiator group (i) being effective to initiate the polymerisation of linear, branched or cyclic hydrocarbyl moieties. At least 5% of the total number of the groups R 1 in the polymer comprise alkenyl groups having between 15 and 20 carbon atoms.