Process for the manufacture of methyl glyoxal
    6.
    发明授权
    Process for the manufacture of methyl glyoxal 失效
    甲基乙二醛的制备方法

    公开(公告)号:US4355187A

    公开(公告)日:1982-10-19

    申请号:US247914

    申请日:1981-03-26

    CPC分类号: C07C45/37

    摘要: Methyl glyoxal is prepared by oxidation of propylene glycol-1,2 in the gaseous phase on a heterogeneous catalyst. The process is carried out with an excess of oxygen and the catalyst used contains molybdenum and at least one of the metals: vanadium, silver, copper, iron, tungsten, tin, zinc, alkali metals, alkaline earth metals.

    摘要翻译: 通过在非均相催化剂上气相中丙二醇-1,2-氧化制备甲基乙二醛。 该方法用过量的氧进行,所用的催化剂含有钼和至少一种金属:钒,银,铜,铁,钨,锡,锌,碱金属,碱土金属。

    Process for isomerizing monochlorophenols or dichlorophenols
    7.
    发明授权
    Process for isomerizing monochlorophenols or dichlorophenols 失效
    异构化单氯酚或二氯苯酚的方法

    公开(公告)号:US4568777A

    公开(公告)日:1986-02-04

    申请号:US670148

    申请日:1984-11-09

    IPC分类号: C07C37/00 C07C39/27

    摘要: The invention relates to a process for isomerizing monochlorophenols or dichlorophenols in which one or more monochlorophenol or dichlorophenol is passed in the gas phase over a zeolite catalyst. In particular, the invention relates to a process for preparing 3-chlorophenol by isomerizing 2-chlorophenol and/or 4-chlorophenol and to a process for preparing 2,5-dichlorophenol by isomerizing 2,4-dichlorophenol using said method.

    摘要翻译: 本发明涉及一种使一氯酚或二氯苯酚异构化的方法,其中一种或多种一氯苯酚或二氯苯酚在气相中通过沸石催化剂。 特别地,本发明涉及通过使2-氯苯酚和/或4-氯苯酚异构化制备3-氯苯酚的方法和通过使用所述方法异构化2,4-二氯苯酚制备2,5-二氯苯酚的方法。

    Process for isomerizing monochlorotoluenes or dichlorotoluenes
    8.
    发明授权
    Process for isomerizing monochlorotoluenes or dichlorotoluenes 失效
    异构化单氯甲苯或二氯甲苯的方法

    公开(公告)号:US4935561A

    公开(公告)日:1990-06-19

    申请号:US740180

    申请日:1985-05-31

    IPC分类号: C07C17/358

    CPC分类号: C07C17/358 Y02P20/582

    摘要: The invention relates to a process for isomerizing monochlorotoluenes or dichlorotoluenes on a zirconium-containing zeolite catalyst of the Pentasil type. Catalysts of this type are distinguished by a particularly high activity coupled with a long service life. In particular, the invention relates to the preparation of a mixture 3-chlorotoluene and 4-chlorotoluene by isomerizing 2-chlorotoluene on zircoium-containing zeolite catalysts of the Pentasil type.The invention also relates to the preparation of a mixture of 2,5-dichlorotoluene and 3,4-dichlorotoluene by appropriate isomerization of 2,4-dichlorotoluene, and to the preparation of a mixture of 2,4-dichlorotoluene and 2,5-dichlorotoluene by appropriate isomerization of 3,4-dichlorotoluene.

    摘要翻译: 本发明涉及在Pentasil类型的含锆沸石催化剂上异构化一氯甲苯或二氯甲苯的方法。 这种类型的催化剂通过特别高的活性加上长的使用寿命来区分。 特别地,本发明涉及通过在Pentasil型的含锆沸石催化剂上异构化2-氯甲苯来制备3-氯甲苯和4-氯甲苯的混合物。 本发明还涉及通过2,4-二氯甲苯的适当异构化制备2,5-二氯甲苯和3,4-二氯甲苯的混合物,以及制备2,4-二氯甲苯和2,5-二氯甲苯的混合物, 二氯甲苯通过3,4-二氯甲苯的适当异构化。

    HYDRAULIC ACCUMULATOR IN FORM OF A BELLOWS ACCUMULATOR
    9.
    发明申请
    HYDRAULIC ACCUMULATOR IN FORM OF A BELLOWS ACCUMULATOR 有权
    液压蓄能器在BELLOWS蓄能器的形式

    公开(公告)号:US20140230939A1

    公开(公告)日:2014-08-21

    申请号:US13261844

    申请日:2012-10-29

    IPC分类号: F15B1/10

    摘要: The invention relates to a hydraulic accumulator, comprising an accumulator housing (1), in which a bellows (21) having a selectable number of pleats (23) forms a mobile separation element between the gas side (25) and the fluid side (13), characterized in that a distancing device (33) is provided arranged inside the accumulator housing (1), and is fluidically connected to the inside of the bellows (21) or abuts to the bellows (21), thus forming an additional medium chamber.

    摘要翻译: 本发明涉及一种包括蓄能器壳体(1)的液压蓄能器,其中具有可选数量的褶皱(23)的波纹管(21)在气体侧(25)和流体侧(13)之间形成移动分离元件 ),其特征在于,设置在所述蓄能器壳体(1)内部并且与所述波纹管(21)的内部流体连接或邻接所述波纹管(21)的距离装置(33),从而形成附加介质室 。