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    PREPARATION OF CHLORINATED POLYOLEFINS.
    58.
    发明公开
    PREPARATION OF CHLORINATED POLYOLEFINS. 失效
    准备氯化聚烯烃。

    公开(公告)号：EP0229049A4

    公开(公告)日：1987-10-08

    申请号：EP85903143

    申请日：1985-06-10

    申请人： DOW CHEMICAL CO

    发明人： AKERS JAMES B JR ,  LENG DOUGLAS E ,  NORMAND RANDALL J

    IPC分类号： C08F8/22 ,  C08F8/20

    CPC分类号： C08F8/22 ,  C08F10/00

    摘要： Method and apparatus for the chlorination of polyolefins in aqueous suspension. The method includes subjecting the suspension of the polyolefin to a submerged jet of chlorine gas at a velocity sufficient to atomize the chlorine; i.e., at least 18.3 m/s (about sixty feet per second). By this method a very intimate mixture of chlorine and aqueous suspension is formed, whereby the chlorination proceeds more efficiently and at a lower chlorine pressure. Further advantages include a more uniformly-substituted product. Figure 1 represents means for introducing the jet of gas. A port (3) extends through and outwardly from the interior of the vessel wall (2). Disposed within the port (3) is an internal plug (4) with an internal passageway (5). The plug (4) forms a gas-tight seal with port (3) and with a gas-delivery line (6). One end (5a) of the passageway (5) widens and forms a continuation of the enlarged end (6a) of the gas-delivery line (6). The other end of the passageway (5) opens into the interior of the reactor (1). The exit end (4b) of the plug (4) extends obliquely a short distance into the interior of the reactor (1). The entrance end (4a) of the plug (4) tapers outwardly to conform to the enlarged end (6a) of the gas-delivery line (6), thereby forming a gas-tight seal when the flanges (7), (8) and (9) of the plug (4), port (3) and line (6) are fastened together as shown.

    Removal of organic halides from hydrocarbon solvents
    59.
    发明公开
    Removal of organic halides from hydrocarbon solvents 失效
    除去烃类溶剂的有机卤化物。

    公开(公告)号：EP0228287A2

    公开(公告)日：1987-07-08

    申请号：EP86310125.9

    申请日：1986-12-23

    申请人： EXXON CHEMICAL PATENTS INC.

    发明人： Tegge, Bruce Robert ,  Weary, Frank Grimm ,  Sakaguchi, Yasuo

    IPC分类号： C08F8/22

    CPC分类号： C08F8/22 ,  C08F210/12

    摘要： Halogenated hydrocarbons are removed from hydrocarbon solvents for reuse in a butyl rubber process by contacting the halide containing hydrocarbon solvent with alumina at a temperature of at least 20°C. In particular 2-methyl-3-chloro- propene-1, 2-methyl-1,2-dibromo-3-chloropropane and tribromo isobutane or mixtures thereof can be removed from a hydrocarbon solvent by the process of this invention. The halide removal is preferably carried out at a temperature of at least 40°C, e.g., 60°C to 100°C.