Stabilized hydraulic fluid
    7.
    发明授权
    Stabilized hydraulic fluid 失效
    稳定液压油

    公开(公告)号:US4179384A

    公开(公告)日:1979-12-18

    申请号:US959307

    申请日:1978-11-09

    申请人: James T. Mann

    发明人: James T. Mann

    摘要: Mineral oil or synthetic hydrocarbon base hydraulic fluids containing a zinc bis(dialkyldithiophosphate) as an antiwear agent are stabilized against degradation at elevated operating temperatures by the incorporation in the hydraulic fluid of an appropriate Group I or Group II metal phosphonate. For example, a hydraulic fluid containing a zinc bis(dialkyldithiophosphate) is stabilized by the presence of a minor amount of a sodium phosphonate.

    摘要翻译: 含有双(二烷基二硫代磷酸锌)作为抗磨剂的矿物油或合成烃基液压油通过掺入合适的第I族或第II族金属膦酸盐的液压油中而在升高的操作温度下稳定而不会降解。 例如,含有二(二烷基二硫代磷酸锌)的液压油通过少量的膦酸钠的存在来稳定。