Hydraulic oil composition
    51.
    发明授权

    公开(公告)号:US11499112B2

    公开(公告)日:2022-11-15

    申请号:US16633197

    申请日:2018-09-27

    摘要: The present invention relates to a hydraulic fluid composition containing a base oil (A), an antioxidant (B) including an amine-based antioxidant (B1) and a phenol-based antioxidant (B2), and a succinimide-based compound (C), wherein the hydraulic fluid composition satisfies the following requirement (I); and is to be used for hydraulic equipment which is equipped with at least one of a wet type brake and a wet type clutch and which is selected from a construction machinery, a general industrial machinery, and a power generator, and in which a working pressure is 30 MPa or more. The hydraulic fluid composition is not only excellent in wear resistance and an effect for suppressing the sludge formation but also excellent in a braking performance or a clutch performance, even when used under a high-pressure condition.
    Requirement (I): A static friction coefficient (μs) after 1,000 cycles, as measured in conformity with the SAE No. 2 test described in JCMAS P 047:2004, is 0.100 to 0.162.

    LUBRICATING COMPOSITION AND METHOD OF FORMATION RELATING THERETO

    公开(公告)号:US20210301217A1

    公开(公告)日:2021-09-30

    申请号:US16834221

    申请日:2020-03-30

    摘要: The present disclosure provides a lubricating composition that includes one or more boron-containing compounds and method of forming the same. The lubricating composition includes one or more boron-containing compounds, one or more metal-based detergents, one or more amine-based antioxidants, one or more phenol-based antioxidants, and a base oil balance. The lubricating composition includes greater than or equal to about 60 ppm to less than or equal to about 300 ppm of boron atoms that define the one or more boron-containing compounds; greater than or equal to about 1,100 ppm of metal atoms that define the one or more metal-based detergents; greater than or equal to about 0.70 wt. % to less than or equal to about 2.00 wt. % of the one or more amine-based antioxidants; and greater than or equal to about 0.30 wt. % to less than or equal to about 2.00 wt. %, of the one or more phenol-based antioxidants.

    Vacuum pump oil
    53.
    发明授权

    公开(公告)号:US11124730B2

    公开(公告)日:2021-09-21

    申请号:US16322015

    申请日:2017-08-28

    发明人: Tokue Sato

    摘要: Provided is a vacuum pump oil which contains a mineral oil (A) having a temperature gradient Δ|η*| of complex viscosity between two points of t(° C.) and t−10(° C.) (where −15≤t≤−10), as measured using a rotary rheometer at an angular velocity of 6.3 rad/s, of 10 Pa·s/° C. or less, and one or more compounds selected from a phenol-based compound (B) and an amine-based compound (C), and which has a viscosity index of less than 160. The vacuum pump oil has a good ultimate vacuum degree and is excellent in water separability, oxidation stability and shear stability, and is therefore applicable to various applications.

    LUBRICANT BASE OIL FOR FLUID BEARING
    56.
    发明申请

    公开(公告)号:US20200181519A1

    公开(公告)日:2020-06-11

    申请号:US16642107

    申请日:2018-10-23

    摘要: An object of the present invention is to provide an ester-based lubricating base oil for a fluid bearing that has excellent hydrolysis resistance and low-temperature fluidity, a high viscosity index, and good evaporation resistance. The present invention relates to a lubricating base oil for a fluid bearing comprising a compound represented by general formula (1): wherein R1 represents a linear C7-C13 alkyl group, and a compound represented by general formula (2): wherein R2 represents a linear C7-C13 alkyl group; and relates to a base oil composition comprising the base oil.