Macrocyclic polyether complexes
    3.
    发明授权
    Macrocyclic polyether complexes 失效
    大环聚醚配合物

    公开(公告)号:US4199513A

    公开(公告)日:1980-04-22

    申请号:US917124

    申请日:1978-06-19

    IPC分类号: B01J45/00 C07D323/00 C07F3/00

    CPC分类号: C07C309/00 C07D323/00

    摘要: Novel complexes of macrocyclic polyethers such as 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6) and disulfonates of the formula I ##STR1## wherein X represents barium or strontium and R.sup.1 is an alkylene moiety, optionally substituted with an alkyl group, are described as well as a process for isolating said macrocylic polyethers through formation of said novel complexes. In the isolation process disclosed, a macrocyclic polyether containing solution is contacted with a disulfonate of formula I to afford the polyether-disulfonate complex as a solid suspension in the solution, the suspended complex is separated from the solution and the separated complex is extracted with a solvent for the macrocyclic polyether.

    摘要翻译: 大环聚醚如1,4,7,10,13,16-六氧杂环十八烷(18-冠-6)和式I的二磺酸盐的新型配合物,其中X表示钡或锶,R 1是亚烷基部分, 描述了任选被烷基取代的方法,以及通过形成所述新型配合物分离所述大环聚醚的方法。 在所公开的分离方法中,将含大环聚醚的溶液与式I的二磺酸酯接触,得到溶液中固体悬浮液的聚醚 - 二磺酸盐络合物,将悬浮的络合物与溶液分离,并将分离的络合物用 溶剂用于大环聚醚。

    Process for preparing aliphatic polyesters
    5.
    发明授权
    Process for preparing aliphatic polyesters 失效
    制备脂肪族聚酯的方法

    公开(公告)号:US5378797A

    公开(公告)日:1995-01-03

    申请号:US131513

    申请日:1993-10-04

    CPC分类号: C08G63/06 C08G63/40

    摘要: Aliphatic polyesters are produced by the acylative ether cleavage of aliphatic monomers having at least one arylmethoxy group and at least one hydrocarbyl group. Alternatively, monomeric systems of aliphatic compounds having at least two arylmethoxy groups together with aromatic or aliphatic compounds having at least two halocarbonyl groups are used. Lewis acids are used to catalyze the reaction.

    摘要翻译: 脂族聚酯通过具有至少一个芳基甲氧基和至少一个烃基的脂族单体的酰基醚裂解来制备。 或者,使用具有至少两个芳基甲氧基的脂族化合物与具有至少两个卤代羰基的芳族或脂族化合物的单体体系。 路易斯酸用于催化反应。

    Process for the separation of olefins and paraffins
    10.
    发明授权
    Process for the separation of olefins and paraffins 失效
    分离烯烃和链烷烃的方法

    公开(公告)号:US07619129B2

    公开(公告)日:2009-11-17

    申请号:US11017491

    申请日:2004-12-20

    IPC分类号: C07C7/144

    摘要: A process for the separation of olefinic hydrocarbons from a liquid feedstock composition comprising at least one olefinic hydrocarbon and at least one paraffinic hydrocarbon, said process comprising contacting the liquid feedstock with a supported ionic liquid membrane wherein the supported ionic liquid membrane comprises a membrane impregnated with an ionic liquid composition.

    摘要翻译: 一种用于从包含至少一种烯烃和至少一种链烷烃的液体原料组合物中分离烯烃的方法,所述方法包括使液体原料与负载的离子液体膜接触,其中所述负载的离子液体膜包括浸渍有 离子液体组合物。