Process for the preparation of 1,1-cyclopropanedicarboxylic diesters
    42.
    发明授权
    Process for the preparation of 1,1-cyclopropanedicarboxylic diesters 有权
    制备1,1-环丙烷二羧酸二酯的方法

    公开(公告)号:US06462224B2

    公开(公告)日:2002-10-08

    申请号:US09739207

    申请日:2000-12-19

    IPC分类号: C07C6974

    摘要: 1,1-cyclopropanedicarboxylic diesters are prepared from malonic diesters, 1,2-dihaloethane and alkali metal carbonate in the presence of a mixture of available or in situ-produced phase transfer catalyst and polyalkylene glycol or derivatives thereof which are capped at one or both ends, in particular those with ether end groups, where the molar ratio of malonic diester: 1,2-dihaloethane: alkali metal carbonate is 1:(1 to 7):(1 to 1.4).

    摘要翻译: 1,1-环丙烷二羧酸二酯由丙二酸二酯,1,2-二卤乙烷和碱金属碳酸盐在可用或原位制备的相转移催化剂和聚亚烷基二醇或其衍生物的混合物存在下制备,所述聚亚烷基二醇或其衍生物在一个或两个 特别是具有醚端基的那些,其中丙二酸二酯:1,2-二卤乙烷:碱金属碳酸盐的摩尔比为1:(1至7):(1至1.4)。

    Liquid dehalogenating agents
    44.
    发明授权
    Liquid dehalogenating agents 失效
    液体脱盐剂

    公开(公告)号:US5132006A

    公开(公告)日:1992-07-21

    申请号:US431437

    申请日:1989-11-03

    CPC分类号: A62D3/34 A62D2101/22

    摘要: Liquid dehalogenating agents containing (a) 30 to 70% by weight of an alkali metal alcoholate having 6 to 20 carbon atoms; (b) up to 12% by weight of an alcohol having 6 to 20 carbon atoms; (c) 5 to 40% by weight of a polyether; and (d) 10 to 65% by weight of a halogenfree hydrocarbon oil are efficient for the dehalogenation of waste oil while at the same time exhibiting improved resistance to hydrolysis and oxidation. In addition the present dehalogenating agents are homogeneous, stable for storage at room temperature, pumpable, and readily measurable, and they may be used in unheated pipes and pumps without causing deposits or plugging.

    摘要翻译: 含有(a)30〜70重量%的碳原子数6〜20的碱金属醇化物的液体脱卤剂; (b)至多12重量%的具有6至20个碳原子的醇; (c)5〜40重量%的聚醚; 和(d)10至65重量%的无卤烃油对废油的脱卤有效,同时表现出改善的耐水解和氧化性能。 此外,目前的脱卤剂是均匀的,在室温下储存稳定,可泵送并且易于测量,并且它们可以用于未加热的管道和泵中,而不会引起沉积物或堵塞。

    Device and method for moving a working means in the ground
    48.
    发明授权
    Device and method for moving a working means in the ground 有权
    在地面上移动工作装置的装置和方法

    公开(公告)号:US08413962B2

    公开(公告)日:2013-04-09

    申请号:US12850181

    申请日:2010-08-04

    IPC分类号: B25B33/00

    CPC分类号: F16L55/1658

    摘要: In a method and a device for moving a working means in the ground, a coupling means rotatable about an axis of rotation for establishing a drive connection between a push-pull unit and a rod assembly having at least one projection and/or at least one recess is engaged with the projection and/or the recess of the rod assembly such that via a first contact area of the coupling means a first feed force is transmitted from the push-pull unit to the rod assembly. By the counter force opposite to the first feed force a torque acting on the coupling means is generated, which torque presses a second contact area of the coupling means against the rod assembly with a contact force. By the contact force, a non-positive connection is established between the push-pull unit and the rod assembly. Via this non-positive connection, a second feed force is transmitted to the rod assembly. By at least a part of the first and second feed force acting on the rod assembly a linear movement of the rod assembly is caused.

    摘要翻译: 在用于将工作装置移动到地面中的方法和装置中,耦合装置可围绕旋转轴线旋转,以在推挽装置和具有至少一个突出部的杆组件之间建立驱动连接,和/或至少一个 凹部与杆组件的突起和/或凹部接合,使得经由联接装置的第一接触区域,第一进给力从推拉单元传递到杆组件。 通过与第一进给力相反的反作用力,产生作用在联接装置上的扭矩,哪个扭矩以接触力将联接装置的第二接触区域压靠在杆组件上。 通过接触力,在推挽单元和杆组件之间建立非正连接。 通过该非正向连接,第二进给力传递到杆组件。 通过作用在杆组件上的第一和第二进给力的至少一部分引起杆组件的线性运动。

    Process for preparing heterocycles
    49.
    发明授权
    Process for preparing heterocycles 失效
    制备杂环的方法

    公开(公告)号:US08222406B2

    公开(公告)日:2012-07-17

    申请号:US12564509

    申请日:2009-09-22

    IPC分类号: C07D413/00

    CPC分类号: C07D263/10 Y02P20/582

    摘要: Provided is a process for preparing a heterocycle by catalytic reaction of an aromatic dinitrile with an amino alcohol, wherein the process includes: initially charging into a reaction vessel the amino alcohol and a catalyst to produce a reaction mixture; adding the aromatic dinitrile into the reaction mixture, which is maintained at a reaction temperature, wherein no solvent other than the amino alcohol of formula (III) is added to the reaction mixture prior to and/or during the catalytic reaction; and after completion of the catalytic reaction, completely replacing, or substantially completely replacing, unreacted amino alcohol with a nonpolar solvent to obtain the heterocycle, wherein the unreacted amino alcohol is present in an amount of not more than 20 wt. %, preferably 3-10 wt. % or less, based on a total weight of the heterocycle.

    摘要翻译: 提供了通过芳族二腈与氨基醇的催化反应制备杂环的方法,其中该方法包括:首先将氨基醇和催化剂装入反应容器中以产生反应混合物; 将芳族二腈加入反应混合物中,其保持在反应温度下,其中在催化反应之前和/或催化反应期间,将不超过式(III)的氨基醇的溶剂加入到反应混合物中; 并且在催化反应完成后,用非极性溶剂完全替代或基本上完全替代未反应的氨基醇,得到杂环,其中未反应的氨基醇的存在量不超过20wt。 %,优选3-10wt。 %以下,基于杂环的总重量。