PROCESS FOR CONTINUOUSLY PREPARING DIALKYL CARBONATE
    6.
    发明申请
    PROCESS FOR CONTINUOUSLY PREPARING DIALKYL CARBONATE 审中-公开
    连续制备碳酸氢钾的方法

    公开(公告)号:US20120130110A1

    公开(公告)日:2012-05-24

    申请号:US13280423

    申请日:2011-10-25

    IPC分类号: C07C68/08

    CPC分类号: C07C68/08 C07C69/96

    摘要: The present invention relates to a process comprising purifying dialkyl carbonates of the formula (II) in one or more columns in the presence of an alkylene oxide of the formula (V) and of an alkyl alcohol of the formula (IV) wherein R1 and R2 represent, independently of one another, linear or branched, substituted or unsubstituted C1-C6-alkyl, R3 and R4 represent, independently of one another, hydrogen, substituted or unsubstituted C1-C4-alkyl, substituted or unsubstituted C2-C4-alkenyl or substituted or unsubstituted C6-C12-aryl, and R5 represents a straight-chain or branched C1-C4-alkyl; and wherein the mean residence time of the dialkyl carbonate in the column(s) is from 0.3 h to 3 h.

    摘要翻译: 本发明涉及一种方法,其包括在式(V)的烯化氧和式(IV)的烷基醇存在下,在一个或多个塔中纯化式(II)的碳酸二烷基酯,其中R 1和R 2 彼此独立地表示直链或支链的取代或未取代的C 1 -C 6烷基,R 3和R 4彼此独立地表示氢,取代或未取代的C 1 -C 4 - 烷基,取代或未取代的C 2 -C 4 - 烯基或 取代或未取代的C 6 -C 12 - 芳基,R 5表示直链或支链C 1 -C 4烷基; 并且其中所述柱中碳酸二烷基酯的平均停留时间为0.3h至3h。

    DIRECTIONAL VALVE AND BREATHING MASK WITH A DIRECTIONAL VALVE
    9.
    发明申请
    DIRECTIONAL VALVE AND BREATHING MASK WITH A DIRECTIONAL VALVE 有权
    方向阀和呼吸面罩与方向阀

    公开(公告)号:US20130068232A1

    公开(公告)日:2013-03-21

    申请号:US13467516

    申请日:2012-05-09

    IPC分类号: A62B18/10

    CPC分类号: A62B18/10

    摘要: A directional valve includes a fixing lug (13), which is arranged eccentrically to a valve membrane (16) and is arranged at a valve housing (15). The dimensions of the fixing lug (13) are selected for fixing the valve membrane (16) relative to the sealing surface (2) of valve seat (1). The size of the eccentric offset (x) is in a range between 8% and 15% of the axis length (D) of the greatest longitudinal extension of valve membrane (16).

    摘要翻译: 方向阀包括偏置于阀膜(16)并设置在阀壳体(15)处的固定凸耳(13)。 选择固定凸耳(13)的尺寸以相对于阀座(1)的密封表面(2)固定阀膜(16)。 偏心偏移(x)的尺寸在阀膜(16)的最大纵向延伸部的轴长度(D)的8%至15%的范围内。