Process for the preparation of .alpha.-tocopherol
    2.
    发明授权
    Process for the preparation of .alpha.-tocopherol 失效
    制备α-生育酚的方法

    公开(公告)号:US5663376A

    公开(公告)日:1997-09-02

    申请号:US460667

    申请日:1995-06-02

    IPC分类号: C07D311/72

    CPC分类号: C07D311/72

    摘要: A process is provided for the preparation of .alpha.-tocopherol. According to the process, a condensation reaction between trimethylhydroquinone and a specific phytol derivative or isophytol is conducted in the presence of any one of the following solvents:(i) a carbonate ester,(ii) a lower fatty acid ester represented by the following formula:R.sup.1 COOR.sup.2wherein R.sup.1 means a lower alkyl group having 1-4 carbon atoms and R.sup.2 means a lower alkyl group having 1-5 carbon atoms with the proviso that methyl acetate and ethyl acetate are excluded;(iii) a mixed solvent of a nonpolar solvent and a lower alcohol having 1-5 carbon atoms; and(iv) a mixed solvent of the nonpolar solvent and the lower fatty acid ester.

    摘要翻译: 提供了一种制备α-生育酚的方法。 根据该方法,在以下任一种溶剂的存在下进行三甲基对苯二酚与特定植物醇衍生物或异麦芽糖醇的缩合反应:(i)碳酸酯,(ii)由下式表示的低级脂肪酸酯 :R1COOR2其中R1表示具有1-4个碳原子的低级烷基,R2表示具有1-5个碳原子的低级烷基,条件是不包括乙酸甲酯和乙酸乙酯; (iii)非极性溶剂和具有1-5个碳原子的低级醇的混合溶剂; 和(iv)非极性溶剂和低级脂肪酸酯的混合溶剂。

    Tactile sensation providing apparatus

    公开(公告)号:US11099648B2

    公开(公告)日:2021-08-24

    申请号:US13818962

    申请日:2011-08-11

    IPC分类号: G06F3/044 G06F3/01

    摘要: A tactile sensation providing apparatus, so as to reduce an influence by provision of a tactile sensation on detection of a position by a touch sensor, includes a touch sensor 11, a tactile sensation providing unit 12 disposed near the sensor 11 and configured to vibrate the sensor 11, a touch sensor control unit 20 configured to transmit a scanning signal to the sensor 11 and, by receiving the signal from the sensor 11, to detect the position of the contact to the sensor, signal lines 16, 18 configured to transmit the signal between the sensor 11 and the control unit 20, and a tactile sensation control unit 30 configured to, based on the position of the contact detected by the control unit 20, control the providing unit 12 to vibrate the sensor 11. The providing unit 12 is disposed avoiding overlapping with the lines 16, 18.

    PIPE JOINT
    10.
    发明申请
    PIPE JOINT 有权
    管接头

    公开(公告)号:US20140239631A1

    公开(公告)日:2014-08-28

    申请号:US14346028

    申请日:2012-06-05

    IPC分类号: F16L33/10

    CPC分类号: F16L33/10 F16L33/02

    摘要: To provide a pipe joint with which loss of rotational force added by electric tools or man power is made remarkably small, and a fastening ring can be diminished with small torque, plural fastening rings 6 vertically wound for a predetermined center angle of 360° to 480°, a guiding member 8 holding the fastening rings 6 as to restrict falling of the fastening rings 6 and allow diminishing deformation, an approximately triangular toggle member 11 disposed to protrude in a radial outer direction from the fastening rings 6 in a pipe unconnected state, and a bolt-nut connection X for moving a central peak portion of the toggle member 11 in a radial inner direction as to reduce a height dimension of the toggle member 11, are provided. The fastening ring 6 has a hitching claw portion 7 protruding in the radial outer direction, and a foot side end portion of the toggle member 11, hitching to the hitching claw portion 7, moves in a peripheral direction as to diminish the fastening ring 6 in diameter.

    摘要翻译: 为了提供一种通过电动工具或人力添加的旋转力的损失明显减小的管接头,并且能够以小的扭矩减小紧固环,多个紧固环6以360°至480°的预定中心角垂直缠绕 °,引导构件8,其保持紧固环6,以限制紧固环6的下落,并且允许减小变形;大致三角形的肘节构件11,设置成沿管道未连接状态从紧固环6沿径向外侧方向突出; 以及用于使肘节构件11的中心峰部沿径向内侧方向移动以减小肘节构件11的高度尺寸的螺栓 - 螺母连接X. 紧固环6具有在径向外侧方向上突出的钩挂爪部7,并且肘节构件11的与脚蹬爪部7连接的脚侧端部沿圆周方向移动,以将紧固环6缩小 直径。