ROTATIONSVERDRÄNGERVAKUUMPUMPE
    3.
    发明公开

    公开(公告)号:EP3156653A1

    公开(公告)日:2017-04-19

    申请号:EP15189996.0

    申请日:2015-10-15

    摘要: Rotationsverdrängervakuumpumpe, insbesondere Drehschiebervakuumpumpe, mit einem Rotor, wenigstens einem an dem Rotor ausgebildeten Arbeitspumpabschnitt zur Förderung eines Arbeitsmediums entlang eines Mediumförderweges, wenigstens einem an dem Rotor ausgebildeten Steuerpumpabschnitt zur Förderung eines Steuerfluids, einem Sicherheitsventil zum zeitweisen Verschließen des Mediumförderweges, und einer mit dem Steuerfluid betriebenen Druckvorsteuerung für das Sicherheitsventil, wobei für die Druckvorsteuerung ein Überdruckventil vorgesehen ist.

    摘要翻译: Rotationsverdrängervakuumpumpe,特别是旋片式真空泵,其具有转子,在转子上用于沿介质输送路径输送的工作介质的工作泵部分形成的至少一个,形成在转子控制泵送部,以促进控制流体,用于暂时封闭传送路径的介质的安全阀的至少一个,并操作的控制流体的一个 用于安全阀的压力先导控制装置,其中为压力先导控制装置提供了一个溢流阀。

    Magnetic disk and method of manufacturing same
    6.
    发明公开
    Magnetic disk and method of manufacturing same 审中-公开
    Magnetplatte und Methode zu ihrer Herstellung

    公开(公告)号:EP1464694A1

    公开(公告)日:2004-10-06

    申请号:EP04007350.4

    申请日:2004-03-26

    摘要: Disclosed is a method of manufacturing magnetic disks, comprising a magnetic layer, a protective layer, and a lubricating layer on a substrate. In the process, a lubricant alpha comprising a compound denoted by chemical formula

            HO-CH 2 -CH(OH)-CH 2 -O-CH 2 -CF 2 (-O-C 2 F 4 )p-(O-CF2)q-O-CF 2 -CH 2 -O-CH 2 -CH(OH)-CH 2 -OH

       wherein p and q are natural number,
    and a compound denoted by chemical formula

            HO-CH 2 -CF 2 (-O-C 2 F 4 )m-(O-CF2)n-O-CF 2 -CH 2 -OH

       wherein m and n are natural number,
    is fractionated by molecular weight to prepare a lubricant a having a weight average molecular weight (Mw) of from 3,000 to 7,000 and a molecular weight dispersion of less than or equal to 1.2;
       a lubricant beta comprising a compound denoted by the chemical formula

            HO-CH 2 -CF 2 (-O-C 2 F 4 )m-(O-CF2)n-O-CF 2 -CH 2 -OH

       wherein m and n are natural number,
    is fractionated by molecular weight to prepare a lubricant b having a weight average molecular weight (Mw) of from 2,000 to 5,000 and a molecular weight dispersion of less than or equal to 1.2;
       a lubricant c comprising a mixture of lubricants a and b is prepared; and
       a film of lubricant c is formed on a protective layer provided on a substrate to form a lubricating layer. A magnetic disk comprising a magnetic layer, a protective layer, and a lubricating layer on a substrate, in which the lubricating layer has been formed on the protective layer is also enclosed.

    摘要翻译: 公开了一种在基板上包括磁性层,保护层和润滑层的磁盘制造方法。 在该方法中,包含由化学式HO-CH 2 -CH(OH)-CH 2 -O-CH 2 -CF 2(-O-C 2 F 4)对(O-CF 2)q O-CF 2 -CH 2 -O -CH 2 -CH(OH)-CH 2 -OH其中p和q为自然数,由化学式HO-CH2-CF2(-O-C2F4)m-(O-CF2)nO-CF2-CH2- OH,其中m和n是自然数,通过分子量分级,以制备重均分子量(Mw)为3,000至7000,分子量分散度小于或等于1.2的润滑剂a; 包含由化学式HO-CH2-CF2(-O-C2F4)m-(O-CF2)nO-CF2-CH2-OH表示的化合物的润滑剂β,其中m和n是自然数,通过分子量分级至 制备重均分子量(Mw)为2,000至5,000且分子量分散度小于或等于1.2的润滑剂b; 制备包含润滑剂a和b的混合物的润滑剂c; 并且在设置在基板上的保护层上形成润滑剂c以形成润滑层。 也包围在保护层上形成有润滑层的基板上的具有磁性层,保护层和润滑层的磁盘。

    GREASE COMPOSITION
    7.
    发明公开
    GREASE COMPOSITION 审中-公开

    公开(公告)号:EP4317381A1

    公开(公告)日:2024-02-07

    申请号:EP22781324.3

    申请日:2022-03-31

    摘要: The present invention provides a grease composition containing a base oil (A), a urea-based thickener (B), and a polymer compound (C), wherein particles that contain the urea-based thickener (B) in the grease composition satisfying the following requirement (I), the polymer compound (C) having a number average molecular weight (Mn) of 30,000 or more and a molecular weight distribution (Mw/Mn) of 2.20 or less, the grease composition being superior in reduction of friction coefficient under conditions of low speed and low load. Requirement (I): the particles have an arithmetic average particle diameter on an area basis as measured by a laser diffraction/scattering method of 2.0 pm or less.