Mixed phosphorus compounds and lubricants containing the same

    公开(公告)号:AU4860999A

    公开(公告)日:2000-01-24

    申请号:AU4860999

    申请日:1999-07-06

    Applicant: LUBRIZOL CORP

    Inventor: VINCI JAMES N

    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and (A) a di or trihydrocarbyl phosphite, (B) at least one reaction product of a di or trihydrocarbyl phosphite and sulfur or a source of sulfur; at least one di or trihydrocarbyl monothiophosphate; or salt thereof, and (C) a salt of a hydrocarbyl phosphoric acid ester. In one embodiment, the lubricant composition contains less than 0.1% phosphorus or less than about 0.75% borated dispersant. This combination of phosphorus compounds provides antiwear and thermal stability to lubricants, even at low phosphorus levels. The lubricating compositions containing the combination of the phosphorus compounds has low corrosivity to copper and low odor as well.

    OVERBASED CARBOXYLATES AND GELS
    47.
    发明专利

    公开(公告)号:CA2133393A1

    公开(公告)日:1995-04-05

    申请号:CA2133393

    申请日:1994-09-30

    Applicant: LUBRIZOL CORP

    Abstract: Gelled overbased materials are prepared by mixing an overbased composition of a metal salt of an organic acid material containing at least 8 carbon atoms, a metal salt of an organic acid material containing fewer than 6 carbon atoms, and a metal carbonate in an oleophilic medium, with an alcohol or an alcohol-water mixture, and heating the mixture.

Patent Agency Ranking