Purification of carboxylic esters which contain aldehydes, acetals
and/or unsaturated compounds
    1.
    发明授权
    Purification of carboxylic esters which contain aldehydes, acetals and/or unsaturated compounds 失效
    含有醛,缩醛和/或不饱和化合物的羧酸酯的纯化

    公开(公告)号:US4946029A

    公开(公告)日:1990-08-07

    申请号:US314952

    申请日:1989-02-24

    CPC分类号: C07C67/60

    摘要: Carboxylic esters obtained by reacting olefinically unsaturated compounds with carbon monoxide and alcohols and containing aldehydes, acetals and/or unsaturated compounds are purified by(a) treating the carboxylic ester which contains an aldehyde, acetal or unsaturated compound in a first stage at from 20.degree. to 200.degree. C. with a strongly acidic agent and(b) hydrogenating the mixture thus treated in a second stage at from 50.degree. to 200.degree. C. under a pressure of from 1 to 50 bar in the presence of one or more metals of subgroup VIII of the periodic table and(c) removing low and high boilers from the hydrogenated mixture obtained in stage b by distillation and obtaining a pure carboxylic ester.

    摘要翻译: 通过使烯属不饱和化合物与一氧化碳和醇反应并含醛,缩醛和/或不饱和化合物反应而获得的羧酸酯通过(a)在20℃的第一阶段处理含有醛,缩醛或不饱和化合物的羧酸酯来纯化 至200℃,和(b)在50℃至200℃的第二阶段,在1至50巴的压力下,在一种或多种金属的存在下,将如此处理的混合物氢化为 元素周期表的第VIII族和(c)通过蒸馏从阶段b中获得的氢化混合物中除去低和高的锅炉,得到纯的羧酸酯。

    Lifting-lowering type aquarium filter
    4.
    发明授权
    Lifting-lowering type aquarium filter 失效
    升降式水族箱过滤器

    公开(公告)号:US5567315A

    公开(公告)日:1996-10-22

    申请号:US408912

    申请日:1995-03-22

    摘要: A filter for aquarium operating in accordance with the lifting-lowering principle comprises a housing with at least one filter compartment for a filter material, a pump which aspirates water after passing through the filter compartment through a suction conduit and supplies the water back into an aquarium, at least one auxiliary chamber supplied with water and a float-controlled valve device controlling an outlet of the auxiliary chamber and communicating with the suction conduit, an auxiliary housing in which the auxiliary chamber is provided and supplied with water filtered after passing of the filter compartment in accordance with the principle of communicating pipes. A passage which is connected with the suction conduit has a valve opening which is alternatingly closeable and openable by a float-controlled valve closing member of the valve device. In another embodiment, a supply is formed as a passage which passes through the filter compartment and is sealed from the latter and opens in a bottom chamber provided in the housing under a lowermost one of the filter compartments, so that the aspiration of the supplied water is performed from below and from the bottom chamber through the filter compartment upwardly with accompanying filtering.

    摘要翻译: 用于根据升降原理操作的水箱的过滤器包括具有用于过滤材料的至少一个过滤室的壳体,在通过抽吸管道通过过滤室之后抽吸水并将水回送到水族箱中的泵 供给水的至少一个辅助室和控制辅助室的出口并与吸入管连通的浮子控制的阀装置,辅助壳体,辅助室中提供辅助室并且供给经过过滤器之后被过滤的水 隔间符合管道原理。 与抽吸管连接的通道具有可由阀装置的浮动控制的阀关闭构件交替地关闭和打开的阀开口。 在另一个实施例中,供应源形成为通过过滤室的通道,并从其中密封,并在设置在壳体内的底部室内在最下面的一个过滤隔室内打开,从而吸入供水 从下方进行,并从底部室通过过滤室向上进行并伴随过滤。

    Preparation of 3-methylpiperidine
    5.
    发明授权
    Preparation of 3-methylpiperidine 失效
    3-甲基哌啶的制备

    公开(公告)号:US4755604A

    公开(公告)日:1988-07-05

    申请号:US062408

    申请日:1987-06-15

    CPC分类号: C07D295/023 B01J23/745

    摘要: 5-Membered, 6-membered or 7-membered cyclic imines are prepared by hydrogenating a C.sub.2 -C.sub.4 -alkanedinitrile in the liquid phase, at from 180.degree. to 300.degree. C. and under superatmospheric pressure, in the presence of a catalyst, by a process in which an iron catalyst obtained by reduction of an iron oxide with hydrogen at .ltoreq.500.degree. C. is used.

    摘要翻译: 通过在液相中在180℃至300℃下和在超大气压下,在催化剂存在下,通过在催化剂存在下,通过将催化剂,C 2 -C 4烷基二醇, 使用通过在500℃下用氢还原氧化铁获得的铁催化剂的方法。

    Air vent
    8.
    发明授权
    Air vent 失效
    通风口

    公开(公告)号:US4178841A

    公开(公告)日:1979-12-18

    申请号:US872317

    申请日:1978-01-25

    IPC分类号: F24F13/16 F24F13/18 F24F7/00

    CPC分类号: F24F13/16 F24F13/18

    摘要: Air vent consisting of a fixed, gridlike apertured front panel and a stop plate disposed behind it, which plate is movable by a control mechanism in the direction of its plane and to the plane of the front panel and which plate in a position resting against the back of the front panel closes the grid apertures, but which in a separated position opens the grid apertures of the front panel for the passage of air.

    摘要翻译: 排气孔由一个固定的网状有孔前面板和设在其后面的止挡板组成,该板可以通过一个控制机构在其平面方向和前面板的平面上移动, 前面板的背面封闭了格栅孔,但分离位置打开了前面板的格栅孔,以便通过空气。

    Sidecar steering aid
    9.
    发明授权
    Sidecar steering aid 失效
    侧面转向助力

    公开(公告)号:US06508483B1

    公开(公告)日:2003-01-21

    申请号:US09748500

    申请日:2000-12-20

    申请人: Gerhard Frank

    发明人: Gerhard Frank

    IPC分类号: B62K2700

    CPC分类号: B62K5/08 B62K27/00

    摘要: A sidecar steering aid. A coupling mechanism is provided for coupling the sidecar to a steering member of a vehicle to which the sidecar is attached. The coupling mechanism includes a spring adapted to provide resistance to compression and tension about a neutral position of the spring. The neutral position is biased with respect to the turning wheel so that the wheel is “cocked” a predetermined amount by the spring.

    摘要翻译: 侧转向助力器。 提供了一种联接机构,用于将侧部连接到车辆的转向构件,该车辆的侧面安装在该转向构件上。 联接机构包括适于提供围绕弹簧的中立位置的压缩和张力的抵抗力的弹簧。 中立位置相对于转向轮偏置,使得轮被弹簧“预定”一定量。

    Covering device for an aquarium, terrarium or similar vivarium
    10.
    发明授权
    Covering device for an aquarium, terrarium or similar vivarium 失效
    用于水族馆,水族馆或类似生态园的覆盖装置

    公开(公告)号:US5404840A

    公开(公告)日:1995-04-11

    申请号:US191417

    申请日:1994-02-03

    CPC分类号: A01K63/06

    摘要: The covering device for an aquarium, terrarium or like vivarium for living things includes an approximately rectangular frame (13); an upwardly openable cover member (15) pivotally mounted on the frame; a lighting device (17) mounted on the bottom side (16) of the cover member (15); a device for locking and releasing the cover member (15) when it is in a closed position on the frame (13) and a drive mechanism (18) for pivoting the cover member (15) upward automatically automatically to open it when the cover member (15) is released by the locking and releasing device, at least over a predetermined initial pivot angle range. A brake device for braking the action of the drive mechanism can also be provided.

    摘要翻译: 用于生物的水族箱,石笋或类似生物的覆盖装置包括大致矩形的框架(13); 可枢转地安装在框架上的可向上打开的盖构件(15) 安装在所述盖构件(15)的底侧(16)上的照明装置(17); 当所述盖构件(15)处于所述框架(13)上的关闭位置时用于锁定和释放所述盖构件(15)的装置和用于当所述盖构件(15)在所述框架(13)处于所述框架 (15)由锁定和释放装置释放,至少在预定的初始枢转角度范围内。 还可以提供用于制动驱动机构的动作的制动装置。