Method of improving sliding surfaces in anti-seizure property
    1.
    发明授权
    Method of improving sliding surfaces in anti-seizure property 失效
    改善抗咬合性能滑动面的方法

    公开(公告)号:US06790295B2

    公开(公告)日:2004-09-14

    申请号:US10184366

    申请日:2002-06-25

    IPC分类号: C23C846

    摘要: A method of improving wear-resistance and anti-seizing properties of slide surface of machineries, such as outer slide surfaces of piston pins of vehicle engines, wherein slide surfaces of iron or steel base materials of machineries are first processed carburizing, then the carburized surfaces are plated with chromium, and next the chromium-plated surfaces undergo impulses fine peening to produce lubricant-retaining cavities on the slide surfaces, which include fine cavities in the form of depressions in the chromium-plating layer and relatively large cavities produced by exfoliation of the chromium-plating layer.

    摘要翻译: 首先,对车辆的发动机的活塞销的外侧滑动面等机械的滑动面的耐磨性和防卡住性提高的方法进行了改进,其中,对机械的钢铁基材的滑动面进行了第一次的渗碳处理, 镀铬,接下来的镀铬表面经过脉冲精细喷丸处理以在滑动表面上产生润滑剂保持腔,其包括镀铬层中的凹陷形式的细小空腔和通过剥离产生的相对较大的空腔 镀铬层。

    Process for producing α,α-bis(hydroxymethyl)alkanal
    6.
    发明授权
    Process for producing α,α-bis(hydroxymethyl)alkanal 失效
    制备α,α-双(羟甲基)链烷醛的方法

    公开(公告)号:US07247755B2

    公开(公告)日:2007-07-24

    申请号:US10563156

    申请日:2004-07-22

    IPC分类号: C07C45/72 C07C51/16

    摘要: The present invention provides a process for producing an α,α-bis(hydroxymethyl)alkanal represented by Formula (II): (wherein R represents an alkyl group, a cycloalkyl group, or an aryl group) which comprises reacting an aldehyde represented by Formula (I): R—CH2—CHO   (I) (wherein R has the same meaning as defined above) with formaldehyde in the presence of a basic catalyst and a phase-transfer catalyst.

    摘要翻译: 本发明提供一种制备由式(II)表示的α,α-双(羟甲基)链烷醛的方法:(其中R表示烷基,环烷基或芳基),其包括使式 (I):<?in-line-formula description =“In-line formula”end =“lead”?> R-CH 2 -CHO(I)<?in-line-formula description (其中R具有与上述相同的含义)在碱性催化剂和相转移催化剂存在下与甲醛一起使用。

    Process for producing alpha,alpha-bis (hydroxymethyl )alkanal
    8.
    发明申请
    Process for producing alpha,alpha-bis (hydroxymethyl )alkanal 失效
    制备α,α-双(羟甲基)链烷醛的方法

    公开(公告)号:US20070112221A1

    公开(公告)日:2007-05-17

    申请号:US10563156

    申请日:2004-07-22

    IPC分类号: C07C45/45

    摘要: The present invention provides a process for producing an α,α-bis(hydroxymethyl)alkanal represented by Formula (II): (wherein R represents an alkyl group, a cycloalkyl group, or an aryl group) which comprises reacting an aldehyde represented by Formula (I): R—CH2—CHO  (I) (wherein R has the same meaning as defined above) with formaldehyde in the presence of a basic catalyst and a phase-transfer catalyst.

    摘要翻译: 本发明提供一种制备由式(II)表示的α,α-双(羟甲基)链烷醛的方法:(其中R表示烷基,环烷基或芳基),其包括使式 (I):<?in-line-formula description =“In-line formula”end =“lead”?> R-CH 2 -CHO(I)<?in-line-formula description (其中R具有与上述相同的含义)在碱性催化剂和相转移催化剂存在下与甲醛一起使用。