Aqueous composition
    2.
    发明授权

    公开(公告)号:US11571737B2

    公开(公告)日:2023-02-07

    申请号:US17255633

    申请日:2019-06-21

    摘要: According to an aspect of the present invention, an aqueous composition contains at least one selected from a group consisting of a carboxylic acid compound represented by the following formula (1), a carboxylic anhydride represented by the following formula (2), and a trimellitic anhydride; a basic compound; and water. In the formula (1), “R” represents an alkanediyl group having 2 to 4 carbons, a vinylene group, or a benzene ring, and “a” represents 2 or 3. In the formula (2), “R” represents an alkanediyl group having 2 to 4 carbons, a vinylene group, or a benzene ring.

    Lubricating oil composition
    8.
    发明授权

    公开(公告)号:US10597600B2

    公开(公告)日:2020-03-24

    申请号:US16086688

    申请日:2017-03-22

    申请人: SHELL OIL COMPANY

    摘要: A composition whereby a hydrocarbon-based base oil is used and in this base oil are incorporated, in terms of the total amount of the composition, 30 to 300 ppm of overbased calcium salicylate and, in net weight in terms of the total amount of the composition, 0.07 to 2.0 mass % of a non-dispersant polymethacrylate having a weight average molecular weight of 5000 to 200,000. The electrical conductivity at 25° C. of this composition is not less than 200 pS/m, the flash point is not less than 240° C., the pour point is −40° C. or lower and the micro clutch friction coefficient at 140° C. is not less than 0.08. This lubricating oil composition may be used in machines fitted with electronic control apparatus and can impart conductivity so as to inhibit the occurrence of “noise” which is detrimental to electronic control.