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    Highly aromatic polyurea/urethane membranes and their use for separating aromatics from non-aromatics
    52.
    发明公开
    Highly aromatic polyurea/urethane membranes and their use for separating aromatics from non-aromatics 失效
    聚脲/氨基甲酸酯的高度芳香膜，以及它们用于芳族和非芳族烃的分离中使用。

    公开(公告)号：EP0312374A2

    公开(公告)日：1989-04-19

    申请号：EP88309631.5

    申请日：1988-10-14

    申请人： EXXON RESEARCH AND ENGINEERING COMPANY

    发明人： Schucker, Robert Charles

    IPC分类号： B01D69/12 ,  B01D71/54 ,  C07C7/144 ,  C10G31/11

    CPC分类号： C10G31/11 ,  B01D71/54 ,  B01D71/76 ,  C08G18/10 ,  C08G18/3225 ,  C08G18/3271 ,  C08G18/3243 ,  C08G18/3814

    摘要： Novel membranes, useful for the separation of aromatics from mixtures thereof with non-aromatics, in, for example, a naphtha feed stream, are characterized by possessing a urea index of at least about 20% but less than 100%, an aromatic carbon content of at least about 15 mole percent, a functional group density of at least about 10 per 1000 grams of polymer and a C = O/NH ratio of less than about 8.0. These highly aromatic polyurea/urethane membranes are symmetric, dense film membranes made from the corresponding polyurea/urethane copolymers by standard membrane casting techniques. The polyurea/urethane copolymers are preferably produced by reacting dihydroxy or polyhydroxy compounds, such as polyethers or polyesters having molecular weights in the range of about 500 to 5000 with aliphatic, alkylaromatic or aromatic diisocyanates or polyisocyanates and low molecular weight chain extenders, such as diamines, polyamines or amino alcohols.
    The membranes are useful for separating aromatics from non-aromatics in e.g., petroleum refining and chemical applications.

    摘要翻译： 新型膜，用于从混合物的芳族化合物与非芳族化合物组成的分离是有用的，在，例如，石脑油进料流，通过一团为特征的唱的至少约20％的尿素指数但小于100％，芳族羧酸的含量 的至少约15摩尔％，至少10％的约1000克聚合物的官能团密度和C的小于约8.0 = O / NH比。 这些高度芳香聚脲/氨基甲酸酯膜是从由标准膜流延技术相应的聚脲/氨基甲酸酯共聚物制成对称的，致密的膜的膜。 如聚醚或聚酯具有约500范围内的分子量〜5000与脂族，烷基芳族或芳族二异氰酸酯或聚异氰酸酯和低分子量的扩链剂，颜色：如二胺的聚脲/氨基甲酸酯共聚物优选通过使二羟基或多羟基化合物，发色产生 ，聚胺或氨基醇。 所述膜可用于在大肠杆菌中的G.，石油精炼和化学应用分离非芳族化合物的芳族化合物是有用的。

    Process for the separation of solvents from hydrocarbons dissolved in said solvents
    55.
    发明公开
    Process for the separation of solvents from hydrocarbons dissolved in said solvents 失效
    对溶剂的由溶解在烃分离过程，所述的溶剂。

    公开(公告)号：EP0220753A1

    公开(公告)日：1987-05-06

    申请号：EP86201362.0

    申请日：1986-08-01

    申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.

    发明人： Bitter, Johan George Albert ,  Haan, Johannes Pieter ,  Rijkens, Hendrik Cornelis

    IPC分类号： C10G31/11 ,  B01D13/00

    CPC分类号： C10G31/11 ,  B01D61/022 ,  B01D69/122 ,  B01D71/70 ,  C10G21/28

    摘要： A process for the separation of solvents from hydrocarbons dissolved in said solvents by contacting a feed solution (e.g. obtained from a dewaxing unit) comprising hydrocarbons dissolved in an aromatic solvent and a polar aliphatic solvent (e.g. toluene and methyl ethyl ketone) at elevated pressure with one side of a dense membrane which is substantially impermeable to said hydrocarbons and which membrane comprises a layer of a halogen-substituted silicone compound comprising units according to the general formula:
    wherein R₁ and R₂ represent moieties chosen from the group consisting of hydrogen, halogen, alkyl, aryl, aralkyl and halogen-substituted alkyl, aryl and aralkyl moieties, and recovering said solvents from the other side of the membrane.

    摘要翻译： 通过使包含在芳族溶剂和极性脂族溶剂溶解的烃的进料溶液（例如，从脱蜡单元获得），用于从在所述溶剂溶解的烃溶剂的分离方法（例如甲苯和甲基乙基酮）在升高的压力以 致密膜的一侧的所有基本不可渗透到所述烃和其中膜包括卤素substituiertem硅氧烷化合物，其包含单位雅丁通式的层：... ... worin R1和R2表示选自所选部分 的氢，卤素，烷基，芳基，芳烷基和卤素 - substituiertem烷基，芳基和芳烷基部分，并从该膜的另一侧所述溶剂。